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1. Note Zhe minimum scan width is a function of the scanner model you are using Therefore make sure that the customised paper size you want to define is not out of the range Scanning tasks 31 32 OO O BR WN To create a custom fixed paper size Click the Add a new paper size button Enter the paper size name width height and offsets Click OK To modify a fixed paper size Select the paper size you want to modify Modify its width height and offsets as applicable Click OK Note You cannot modify the width and height of standard paper sizes To change the position of the paper size on the list click the up or down arrows To delete a paper size Select the paper size that you want to delete Click the Delete button To add an oversize factor In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Fixed paper size Select the paper size that is closest to but smaller than your original From the submenu select Set up Select Oversize Set the oversize factor 0 1 2 3 This oversized format appears in the list of available paper sizes as a standard size oversize factor Example A4P Oc Scan User Manual Setting the scanning resolution Resolution measured in dots per inch dpi indicates the fineness of detail in a scanned image The higher the resolution you set the fin
2. Insert colour button see Insert a new colour on page 119 Click and drag a rectangle to cover an area with a variety of red pixels The average value of these pixels become the newly inserted colour also the new picked colour B Click Apply to remap the different red pixels to the new picked colour Repeat for the green feature The final histogram shows three final output colours white red and green Start Feature extraction 103 Extract features with merge tools 104 One of the techniques of feature extraction is to use the colour merge and removal tools This technique is based on the excessive initial colours method which results in a smaller number of LUT output colours than at the start The merge and removal tools remap pixels to similar LUT output colours to reduce the final number of LUT colours The example below of a map shows a dark line running through a greenish background Feature extraction will reduce the number of colours in the background to make the line clearer 7 Clean the background To extract the line from the background remap the edge pixels to either the background green or the dark line Oc Scan User Manual To clean the background Z Pick a green pixel from the background see Pick a colour on page 116 E Click the Merge marked colour button and mark the pixels in the background that you want to merge with the picked colour see
3. Options A dialog box appears with the following compression types Quality The higher the quality setting the larger the JPEG file and the closer the output image will be to the original input Normally you want to use the lowest quality setting smallest file that decompresses into something visually indistinguishable from the original image This would be in the 50 95 settings range The default setting is 75 which gives an acceptable result You can adjust the settings in increments of 5 and 10 until you get a good output image However settings above 95 are useless since the compressed file size increases dramatically for hardly any gain in output image quality Smoothing This option filters the input image to eliminate fine scale noise A moderate smoothing factor of 10 to 50 may get rid of dithering patterns in the input file This results in a smaller JPEG file and a better looking image A high smoothing factor will blur the image significantly Converting to another file format 96 ah ND You may have a whole list of files in the same format that need to be converted in exactly the same way The application offers a convenient interface for multiple file batch conversions n Convert a single file n Convert multiple files batch convert n Save the conversion log To convert a file to another format In the View window open the image file that you want to convert From the File
4. To navigate between windows click on the window s corresponding tab at the bottom left of the screen 3 Oc Scan window tabs The Scan toolbar 26 4i H 4 The Scan toolbar The scanning commands from left to right are n Scan scans the document to file n Backward moves the document backward through the scanner n Halt pauses the prescan to let you make adjustments n Forward starts the prescan n Stop aborts the scan n Eject advances the document forward through the scanner Oc Scan User Manual Scanning a document to file BR N NN OW To scan a document to file without adjustments Place your original document face down along the insertion slot on the scanner In Oc Scan click the Scan tab to go to the scan window if necessary From the Scan set up tab set Scan preset to none From the drop down list boxes select the scanning mode resolution and paper size Click the Scan button Specify the destination file name and directory Specify the output format see Selecting the output file format on page 27 For certain formats click Options to give additional set up parameters see Setting up parameters for TIFF and JPEG on page 95 Click OK to start the scan The file type extension displays next to the file name Selecting the output file format Select an output
5. Merge colours by manual selection on page 120 Click Apply Toggle between the RGB LUT views to check the results see Switch between the RGB LUT views on page 110 8 Sharpen the line Once you have a clean background you can merge the pixels in the line to a single dark brown colour To sharpen the line 2 Pick a brown pixel from the line Le Click the Merge marked colour button and mark the pixels in the line that you want to merge with the picked colour B Click Apply Start Feature extraction 105 Start feature extraction n Scan an image sample on page 106 n Choose a LUT creation method on page 107 n Base the LUT filter on a selection in the image on page 108 Scan an image sample To create a LUT filter for a class of documents you begin by scanning a representative sample in true colour mode RGB Follow these recommendations n Use the same resolution dpi that you will use later on to scan documents in classified mode n Use the default settings for brightness and contrast black and white points etc n Align your scan properly during scanning Uneven lines create pixels with unnecessary colour shades that can complicate LUT editing a Do not modify your image in the View window once scanning completes 106 Oc Scan User Manual Choose a LUT creation method Depending on the type of original for whi
6. Blur filter page 69 n Background suppression page 66 Click Scan when you are satisfied with the results Scanning modes 57 Black and white photo mode 58 Oo BR ND This 8 bit halftoning mode uses dithering to convert greytones into black and white in the output image according to the Floyd Steinberg algorithm n Use to scan photos and photo printouts To scan in B W photo mode In the Scan set up tab select your scan preset From the Mode drop down list select B W Photo Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Brightness and contrast page 70 n Lightness page 71 n Gamma page 67 n Sharpen soften filter page 74 n Blur filter page 69 Click Scan when you are satisfied with the results Oc Scan User Manual Colour modes Oc Scan offers the following colour scanning modes n Graytone mode on page 59 24 bit color true colour mode on page 60 n Indexed colour mode on page 61 Classified colour mode on page 62 B B Graytone mode a hwnd n 8 bit mode n Scans the actual grey tones of each pixel up to 256 levels n Use for black and white photographs To scan in graytone mode In the Scan set up tab select your scan preset From the Mode drop down list select Graytone Select
7. General image file formats on page 127 n Fax file formats on page 128 n Scanned trace subset files on page 128 n Greyscale formats on page 129 a Colour formats on page 130 n Plot print file formats on page 131 Oc Scan User Manual General image file formats Name PCX ImgCM ImgCC ImgGEM Rie RIc2 Ig4 Scn Rnl Gtx G3 Gtx G4 Ras Eps Bmp Cut Arf CALS Gp4 Typel CALS Gp4 Type2 CALS Gp4 Type4 JEDMICS Rst Gr4AB Type Application Description Black and white format used by PC Paintbrush Z Soft Corporation CADmate Raster to Vector conversion EYES TAR Microtek scanners AutoDesk CADcamera Raster to Vector conversion GEMpaint and GEMscan Digital Research Inc Softdesk CADOverlay and ViewBase Similar to Rlc but contains additional information at the end of the file Softdesk Group4 compressed format similar to Rlc2 except that the raster data segments contain strips of Group 4 data Eldak s Raster to Vector conversion and raster editor CAD overlay and Raster to Vector conversion GTX Corporation using simple run length encoding CAD overlay and Raster to Vector conversion GTX Corporation using CCITT G3 encoding CAD overlay and Raster to Vector conversion GTX Corporation using CCITT G4 encoding Sun raster format a native bitmap format for UNIX Encapsulated postcript format compatible with desktop publishing applications Microso
8. Oc Scan windows 26 The Scan toolbar 26 Scanning a document to file 27 Table of Contents Chapter 3 Chapter 4 Scanning tasks Setting up scan parameters 30 Setting the original paper size 30 Setting the scanning resolution 33 Using scan presets 34 Prescanning the original 36 Making a prescan 36 Viewing image details during a prescan 37 Manipulating the image during prescan 38 Selecting an area to scan 38 Scanning a mirror image of the original 38 Inverting colours during prescan 39 Aligning an image during prescan 40 Rotating the image during prescan 41 Scanning to file 42 Scanning in batches 43 Scanning directly to a printer 45 Scanning to the View window 46 Scan to Net 47 Scan to pdf 48 Scanning thick media 49 About scanning Thick Media 49 Limitations to consider prior to scanning thick media 50 Scanner adjustments for thick media 51 Scanning modes Black and white modes 54 Black and white threshold mode 55 Black and white adaptive mode 56 Black and white Copy Normal 56 Black and white copy photo mode 57 Black and white Copy adaptive mode 57 Black and white photo mode 58 Colour modes 59 Graytone mode 59 24 bit color true colour mode 60 Indexed colour mode 61 Classified colour mode 62 Oc Scan User Manual Chapter 5 Scanning adjustments Setting the threshold 64 Despeckling and hole filling 65 Making adaptive adjustments 66 Setting the adaptive level 66 Setting the background suppress
9. Save as to save the modification Oc Scan User Manual Stretching the histogram a The histogram stretching function adjusts for optimal balance between highlights and shadows in your image This technique consists of removing the darkest and lightest pixels of an image and remapping the remaining ones over the whole lightness range 0 255 Globally it results in an increase of the image contrast As an example you can use this method to clean up dirty white backgrounds To stretch the histogram From the Image menu select Histogram stretch A lightness histogram appears Select Manual or Automatic n Automatic determines the optimal location for the black point BP and the white point WP on the histogram then applies the corrections to the image n Manual allows you to set the location of the black point BP and the white point WP by moving the arrows to any position within the lightness range 0 to 255 Click Preview to see the effect of the correction on the image on screen The histogram dialog box remains open Tip Press the lt ctrl gt key as you move the arrows to display the effects on screen instantaneously Adjust the values for best results Click OK to apply the correction and exit the dialog box From the File menu select Save or Save as to save the modification Processing image files 89 Printing and converting im
10. Scan User Manual Edit the LUT n Make a selection in the image on page 115 n Pick a colour on page 116 n Explode a colour on page 117 n Import new colours on page 118 n Insert a new colour on page 119 n Merge colours by manual selection on page 120 n Merge similar colours on page 120 n Protect a colour on page 121 n Remove LUT output colours on page 122 n Undo an operation on page 124 Make a selection in the image You can make a selection in the image to base your LUT filter or to create local viewboards t To define a selection in the image T EE 1 Click the Selection button to change the cursor into a cross hair 2 Click and drag a rectangle to cover a selected an area You have the following possibilities n To resize move the cursor over any rectangle corner to display a resizing handle a blue arrow Click and drag any corner to resize the rectangle n To change the location move the cursor over any segment to display the movement handles Click and move the rectangle to another location on the image as needed n To activate the zoom function click inside the rectangle n To abort moving and resizing operations press the lt ESC gt key n To undo the selection and turn off the function click the standard cursor Start Feature extraction 115 Pick a colour 116 You can pick a particular colour to edit in the image wheth
11. Setting the original paper size on page 30 n Setting the scanning resolution on page 33 n Using scan presets on page 34 Setting the original paper size 30 Before you scan an original indicate its size to the scanner by one of the following ways n Selecting a standard US ISO and DIN or custom paper size n Entering a paper size in scanner units page 30 n Using automatic paper size detection page 31 n Entering a paper size by width only page 31 You can also n Create your custom paper sizes page 32 n Add an oversize factor to standard paper sizes page 32 n Define the paper size units inches or millimetres in Preferences Selecting preferences on page 19 To select a standard paper size In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Fixed paper size A list appears with standard and custom sizes and orientations Choose your original s paper size and orientation To set the paper size in scanner units In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Use Scanner Units Enter a value in the box Note On certain scanner models you can measure the scanner units directly on the document insertion slot Oc Scan User Manual The automatic paper detection feature detects paper sizes by comparing scanner background and image tones Use
12. a way that the images are not properly oriented a visual post process is necessary When the operator views each scan he identifies which direction would be up for proper viewing Oc Scan User Manual orientation and corrects the orientation parameters No other change or actual rotation is required When the end user requires that all files have the same orientation that is the pixel path direction is set to 0 and line progression direction is set to 270 an additional step of actual rotation is necessary This condition Is generally specified in configurations where the viewing subsystem is not powerful enough to perform at display time any needed rotation due to previous random orientation scanning A Supported file formats 133 134 Oc Scan User Manual Appendix B Miscellaneous ES Oc Scan User Manual 135 How to read this manual 136 The consistent style that is used in this manual enables you to quickly become familiar with the use of this manual and ultimately the Oc Scan Description Each section or subsection contains a description of the feature or operation identified in the title It might also include possible applications as well as any guidelines that you should bear in mind Procedures A description is followed by a procedure A procedure always begins with a phrase which briefly describes the procedure followed by a series of numbered steps that take you step by step through all phase
13. file format before you scan a document to file Oc Scan supports more than 50 industry standard file formats for maximum compatibility with general and specialised applications within CAD DTP FAX and Graphics Depending on whether you scan in colour or greyscale mode specific output format types are available see Supported file formats on page 125 When you choose an output format type bear the following in mind n If you are scanning an image for use in a specialised computer application consult your application s parameter set up requirements for imported image files n If you are scanning an image for archiving or post processing the TIFF format is a good choice because it is widely used and compatible with the majority of computer applications n In colour mode the JPEG format gives good compression though with some loss of detail Starting to scan 27 28 Oc Scan User Manual Oc Scan User Manual Chapter 3 Scanning tasks 5 B 5 5 Setting up scan parameters on page 30 Prescanning the original on page 36 Manipulating the image during prescan on page 38 Scanning to file on page 42 Scanning in batches on page 43 Scanning directly to a printer on page 45 Scanning to the View window on page 46 Scan to Net on page 47 29 Setting up scan parameters You indicate the following parameters prior to scanning n
14. language Define the margins if applicable Select the print resolution From the Page set up tab select the paper size and orientation Click Clone Enter a name for the new profile Click OK The new profile figures in the list of available profiles To delete a printer profile In the Printer profile box select the profile that you want to delete Click the adjacent Properties button to enter a set up dialog box Click Delete Click OK to confirm the deletion and to remove the profile from the list of available profiles Oc Scan User Manual Setting up parameters for TIFF and JPEG The two most widely used formats TIFF and JPEG have special set up parameters that you define when you save your scanned images under these file formats TIFF set up TIFF Tag Information File Format is a standard file format used by many raster and desktop publishing programs It is also the standard image file format for many processing and enhancement applications t To define TIFF set up parameters 1 From the File menu select Save as A dialog box appears Note You also get the same dialog box before you scan a document to file 2 In the File type box select TIFF 3 Click Options A dialog box appears with the following compression types n None uncompressed 8 bit grey level or 24 bit colour level versions n Packbit compressed 8 bit gre
15. menu select Save as A dialog box appears Enter a file name if different than the current name In the Save as type box select the new file format Click Options to enter additional settings Available options differ depending one the chosen file format Click Save to convert and save the file Oc Scan User Manual To convert multiple files batch convert From the File menu select Batch convert A dialog box appears Select the files to convert You can make multiple selections with the lt shift gt or lt ctrl gt keys Note The input files must have the same file format In the Save as type box select the output file format All files in the batch will convert to this same file format Click Options to enter additional settings Available options differ depending one the chosen file format In the Directory box select the destination folder for the converted files Click Convert options if you want to invert rotate mirror scale or despeckle hole fill the image files Select Overwrite existing files if applicable Click Convert to start the batch conversion If necessary click Abort to stop the conversion To get a conversion log A log displays the status of the conversion process and indicates problems with an error message When the conversion completes a list of all successful conversions appear in the log Click Save l
16. s top or bottom point is moved down while a negative value means that it is moved up Accuracy Lens Enhancement ALE 24 Accuracy Lens Enhancement ALE is an electronic correction of spherical errors in CCD based camera scanners When looking at pixels across the range of a camera the pixels tend to be more elliptical at the outside edges of the lens and more round in the middle of the lens This anomaly is known as a spherical lens error and can introduce inaccuracies in the scanning system that can vary quite substantially between different points along the scan line Oc Scan User Manual ALE process electronically corrects the spherical errors in the scanner and maintain a stable maximum error across any two points of less than 0 1 1 pixel which is part of our U S patent 5502578 Contex is the only scanner manufacturer to offer Accuracy Lens Enhancement ALE technology for their entire range of scanners Contex is committed to developing only the highest levels of quality accuracy and reliability Starting to scan 25 Making your first scan Before you work with Oc Scan check that you have switched on your scanner before you switch on the computer This allows the computer to detect the scanner connection If you have turned on the scanner after the computer click Rescan bus to detect the connected scanner The Oc Scan windows In Oc Scan the default main window is the Scan window
17. scan remain empty Each line always contains a fixed number of fields separated by commas 3 Select a destination folder for your log file 4 Click OK 5 Oc Scan User Manual Scanning directly to a printer You can scan a document make the necessary adjustments and then make an immediate print t To scan to a printer 1 Place your original document face down along the insertion slot on the scanner From the Scan menu select Scan to print From the Scan set up tab select the scanning mode resolution and paper size From the Adjustments tabs make the necessary settings Click Scan A Print dialog box appears Select your printer options Click OK to start printing N NO O b Scanning tasks 45 Scanning to the View window 46 You can scan your document directly to the View window This allows you to make image adjustments and then save to a file To scan to the View window Place your original document face down along the insertion slot on the scanner From the Scan set up tab set Scan preset to None From the drop down list boxes select the scanning mode resolution and paper size From the Scan menu select Scan to viewer Click the Scan button When the scan completes the image loads and displays in the View window Once in the View window you can make modifications to the image and
18. scan preset In the Scan set up tab select a preset that you want to delete from the Scan preset list Click on the arrow next to the Scan preset list A submenu appears Select Delete Confirm Scanning tasks 35 Prescanning the original When you make a prescan of an original document you can adjust scan settings and perform simple image manipulations such as image selection alignment and rotation Adjust the parameters during a prescan to limit the quantity of data that will be lost when you perform the very same manipulations in the image processing phase Making a prescan 36 kh ND During a prescan the type of adjustments that you can make depends on the scanning mode that you choose The Adjustments tab displays the available settings for each selected mode To start a prescan Place your original document face down along the insertion slot on the scanner In Oc Scan click the Scan tab to go to the scan window if necessary From the Scan set up tab set Scan preset to None From the drop down list boxes select the scanning mode resolution and paper size Click the Forward button The document prescans n The panel on the left of the scan window displays an overview of the scanning document n The panel on the right displays the details of the area indicated by a dotted rectangle in the overview panel n You can also drag this rect
19. smaller or equal to the speckle size you define Hole filling fills with black a white speckle that is smaller or equal to the speckle size you define B B Despeckle hole filling filters are only available in B W threshold and B W adaptive modes To despeckle or fill holes In the Adjustments tab select Despeckle and or Hole filling In the adjacent box set the speckle size Click Forward to prescan Click on different areas in the overview panel to see the despeckling hole filling effects on image details Change the speckle size until you are satisfied with the results Click Scan to scan the document to file Scanning adjustments 65 Making adaptive adjustments Adaptive tonal adjustments are available for the following scanning modes n Black and white adaptive n Black and white copy normal n Black and white copy photo n Black and white copy adaptive n Black and white photo There are two adjustments to make adaptive level and background suppression on certain scanner models only the adaptive level adjustment is available Setting the adaptive level Adaptive level works like a threshold The lower the value you set the more background details show up in the scanned image 1 Inthe Adjustments tab set the value in the Level box 2 Click Forward to prescan 3 Adjust the adaptive level value for best results After
20. t To protect a colour 1 On the LUT toolbar click the Protect colour button 2 Click on the colour pixel that you want to protect n On the image the pixels belonging to the protected colour flash n On the histogram a red square at the foot of the column shows that the colour is protected n On the colour wheel a red dot in the centre of the colour disc shows that the colour is protected 3 When you have finished click once again on the Protect colour button to turn the function off If you try to mark the protected colour for merging or removal an error message displays Start Feature extraction 121 To un protect a colour 1 On the LUT toolbar click the Protect colour button 2 Point and click on the protected colour marked by a red square in the histogram or red dot in the colour wheel to remove the protection 3 Click on the Protect colour button once again to turn the function off Remove LUT output colours 122 You can also remove a colour entirely from your LUT filtered image The pixels corresponding to the removed LUT output colour remap to the nearest active LUT output colour n To remove a colour by manual selection on page 122 n To remove colours similar to a picked colour on page 123 n To remove minor colours on page 123 To remove a colour by manual selection You can mark several colours for removal at a time a On the LUT toolbar click the Remove col
21. the new LUT output colour The pixels that belong to the new LUT output colour flash on the image B 7 Click Apply This operation remaps the nearest colours in the RGB image to the new LUT output colour In the histogram and colour wheel this new LUT output colour becomes the picked colour Note Protected LUT colours do not remap to the new inserted colour Start Feature extraction 119 Merge colours by manual selection You can pick a colour into which you merge other colours For example you may have a white background that is spotted with gray or yellow You can clean up that white by merging the gray and yellow into the white The result is a homogeneous white background To merge a colour Pick a white colour into which you want to merge other colours a From the toolbar click the Merge colour button With the mouse click the gray and yellow that you want to merge with your white colour to mark them for merging n In the histogram a blue square at the foot of the gray and yellow columns indicates that you have marked these colours for merging n In the image the marked white gray and yellow pixels flash to show the areas that will merge into one colour B Click the Apply button Now the original RGB input colours corresponding to the marked gray and yellow LUT output colours are re mapped to the picked white LUT colour Note If you want to un mark a colour for merging click onc
22. the resolution and paper size Click Forward to prescan In the Adjustments tab adjust the following settings n Brightness and contrast page 70 n Lightness page 71 n Gamma page 67 n Blur filter page 69 n Black and white points page 72 Click Scan when you are satisfied with the results Scanning modes 59 24 bit color true colour mode 60 Oo BR ND n 24 bit true colour mode n Use for colour photographs and posters n Produces large file sizes To scan in RGB mode In the Scan set up tab select your scan preset From the Mode drop down list select 24 bit color Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings for best results n Brightness and contrast page 70 n Lightness page 71 n Gamma page 67 n Blur filter page 69 n Sharpen soften filter page 74 Click Scan when you are satisfied with the results Oc Scan User Manual Indexed colour mode Oo BR N The indexed colour mode scans images with limited colours by mapping true colours to an indexed colour palette n Use for simple colour images that only require up to 256 output colours n Produces small file sizes due to a limited number of output colours To scan in indexed colour mode In the Scan set up tab select your sc
23. up parameters for TIFF and JPEG 95 Converting to another file format 96 Chapter 7 Start Feature extraction Introduction to Feature extraction 100 What is colour feature extraction 100 Why use colour feature extraction 100 How you can create a filter used for colour feature extraction 101 How the scanner performs colour feature extraction 101 When to use colour feature extraction 101 Extract features with insert and import tools 102 Extract features with merge tools 104 Start feature extraction 106 Scan an image sample 106 Choose a LUT creation method 107 Base the LUT filter on a selection in the image 108 Work in the LUT window 109 Choose the colour space method for LUT editing 109 Get pixel information 109 Switch between the RGB LUT views 110 Zoom in the image 110 Use the viewboards to edit the LUT filter 111 View the output colours in the colour wheel 112 View the output colours in a histogram 113 Edit the LUT 115 Make a selection in the image 115 Pick a colour 116 Explode a colour 117 Import new colours 118 Insert a new colour 119 Merge colours by manual selection 120 Merge similar colours 120 Protect a colour 121 Remove LUT output colours 122 Undo an operation 124 6 Oc Scan User Manual Appendix A Supported file formats Using available file formats 126 General image file formats 127 Fax file formats 128 Scanned trace subset files 128 Greyscale formats 129 Colour formats 130 Plot print file formats 131 Set
24. 4 compressed formats Intergraph RLE and CIT and Image Systems CADOverlay RLC format for AutoCAD Scanning modes n Black and white n Graytone n Colour true colour indexed colour and feature extracted colour 10 Oc Scan User Manual Operating modes The Oc Scan software scans documents in the following colour and black and white modes 24 bit RGB colour mode This mode scans images at the full 24 bit true colour mode for 16 8 million colours Indexed colour mode When you scan documents with a limited range of colours this mode maps true colours to an indexed colour palette The scanner generates this colour palette automatically when it does an adaptive colour prescan of the original The scanner s ability to transform a true colour image from 16 8 million colours down to 16 or 256 colours greatly reduces the data volume At the same time the scan speed increases and the disk storage requirements decrease needing only 4 bits or 8 bits per pixel compared with the 24 bits required in true colour mode Feature extracted classified colour mode This mode uses colour mapping to sort the observed colour features in a document and to classif them into categories using a colour LUT look up table You can generate this LUT once and download it to the scanner for a similar class of documents Colour mapping can improve details in complex maps or drawings while increasing the scan speed and minimizing disk storage require
25. Cancel Restores the original gamma values the gamma dialog box closes a OK Accepts the gamma settings and exits the gamma dialog box Oc Scan stores the modified curves and downloads them to the scanner for the next scan or prescan Oc Scan User Manual Blurring colours and greytones A N Blur determines the smoothness of the transition from one colour to another You can adjust the blur setting for an image during prescanning in the following modes To set blur In the Adjustments tab select Blur In the adjacent box enter a value Click Forward to prescan Adjust the blur value for best results After each change a new prescan shows the effects in the image details Click Scan when you are satisfied with the results Scanning adjustments 69 Setting brightness and contrast 70 n Brightness indicates how light or how dark an image appears n Contrast determines how much of the dark parts of the image stand out and how much of the light parts of the image recede During prescanning you can adjust the brightness and contrast of an image in the following modes n Black and white photo n Greytone and colour modes To set brightness and contrast In the Adjustments tab click on the arrows of the Brightness and contrast control button to obtain the best appearance for the image You can adjust this value between 100 to 100 Note Due to data buffering i
26. LUT filter on a selection in the image 108 You can base the preliminary LUT filter on a specific area of the scanned true colour image That area should represent the essential features that you want to have in your final filter Select this area before you define the LUT filter settings Note This option works only in the two adaptive modes Photo Artwork and Maps CAD Plots To select an area After your scanned true colour image opens or loads in the View window click the selection tool Click and drag a square to cover the area you want Click the square s handles to edit or move the selection area as needed Note You can only define one area From the LUT menu select Create LUT A dialog box appears The Based on a selected rectangle option is selected Choose either Photo Artwork or Maps CAD Plots Click the adjacent button to define the settings for the preliminary LUT and click OK Oc Scan User Manual Work in the LUT window n Choose the colour space method for LUT editing on page 109 n Get pixel information on page 109 n Switch between the RGB LUT views on page 110 n Zoom in the image on page 110 n Use the viewboards to edit the LUT filter on page 111 n View the output colours in the colour wheel on page 112 n View the output colours in a histogram on page 113 Choose the colour space method for LUT ed
27. Lee Gardens 33 Hysan Avenue Causeway Bay Hong Kong Oc Hungaria Kft P O B 237 1241 Budapest Hungary Oc Italia S p A Strada Padana Superiore 2 B 20063 Cernusco sul Naviglio MI Italia Oc Systems Malaysia Sdn Bhd 3 01 Level 3 Wisma Academy Lot 4A Jalan 19 1 46300 Petalig Jaya Malaysia 139 Oc Nederland B V P O Box 800 5201 AV s Hertogenbosch The Netherlands Oc Norge A S Postboks 53 Grefsen 0409 Oslo 4 Norway Oc Poland Ltd ul opuszafiska 53 02 232 Warszawa Poland Oc Lima Mayer S A Av Jos Gomes Ferreira 11 Ed Atlas II Miraflores 1495 Alg s Portugal Oc Far East Pte Ltd Oc Singapore Pte Ltd 03 00 Wisma Gulab 190 MacPherson Road Singapore 348548 Oc Espafia SA Business Park MAS BLAU C Osona 2 2 3a Planta 08820 El Prat del Llobregat Barcelona Spain Oc Svenska AB P O box 1231 S 164 28 Kista Sweden Oc Schweiz AG S gereistrasse 29 CH8152 Glattbrugg Switzerland 140 Oc Scan User Manual Oc Taiwan Ltd No 99 24 Nan Kang Road Sec 2 Taipeh Taiwan Taiwan RO Oc Thailand Ltd 16th Floor B B Building 54 Asoke Road Sukhumvit 21 Bangkok 10110 Thailand Oc U K Ltd Langston Road Loughton Essex IG10 3SL United Kingdom Oc USA Inc 5450 North Cumberland Av Chicago Ill 60656 U S A Index A Adaptive level 66 Adjustments adaptive level 66 background suppression 66 black and wh
28. Oc Scan User Manual Oc Technologies B V Copyright Oc Technologies B V Venlo The Netherlands 2006 All rights reserved No part of this work may be reproduced copied adapted or transmitted in any form or by any means without written permission from Oc Oc Technologies B V makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose Further Oc Technologies B V reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation to notify any person of such revision or changes Edition 2006 Table of Contents Chapter 1 Introduction Introduction 10 Features 10 Scanning modes 10 Operating modes 11 Install the software 12 System requirements 12 Software installation 12 Software upgrade 12 Start Oc Scan 13 Use Oc Scan in Demo mode 13 Oc Scan main window 14 Oc Scan windows 15 Access user documentation 15 Chapter 2 Starting to scan Calibrate your scanner 18 Prerequisites 18 Why calibrate 18 How to calibrate 18 Selecting preferences 19 Scanning preferences 19 Prescanning preferences 20 Batch scanning preferences 22 Setting up the scanner 23 Selected scanner 23 Paper Load option 23 Camera alignment 23 Scanner media offsets 24 Accuracy Lens Enhancement ALE 24 Making your first scan 26 The
29. age You can crop a selected portion of a scanned image and save it to file t To crop a selection of the image pa ini 1 With the image open in the View window click the Selection button to select the area you want to keep 2 Click the Crop button The program removes all image data outside the selection 3 From the File menu select Save or Save as to save the modification Resizing the image You can resize an image by applying a scaling factor t To resize an image 1 From the Image menu select Scale A dialog box appears 2 Click on the slider to set a scaling factor Note The default scaling factor is 100 3 Click OK to resize the image From the File menu select Save or Save as to save the modification 82 Oc Scan User Manual Manipulating the image You can perform the following image manipulations from the View toolbar t To manipulate the image 1 With the image open in the View window click one of the buttons below to perform the manipulation you want Ab gt Mirror This function flips the image horizontally FA Measure This toggle function allows you to measure the distance between two points by drawing a measure line between them This line has handles on which you can pull to drag and resize The measurements appear in the information field of the status bar 2b Rotate right This function rota
30. age files Printing an image file on page 90 n Printing image files in batches on page 91 n Selecting a predefined printer profile on page 92 n Creating a customised printer profile on page 94 n Setting up parameters for TIFF and JPEG on page 95 n Converting to another file format on page 96 Printing an image file NO Bb 10 11 12 90 Using Oc Scan you can print individual files or selections of image files To make print settings With the image open in the View window click the Print button A dialog box appears with the name of the default printer In the Name box select the printer if different from the default printer Select your printing options as follows Print to file This option prints the image to a file In the Save as dialog box enter a file name and destination folder Use Windows printer driver This option uses the Windows printer driver Click Properties to enter additional settings See Windows documentation for details Use direct printing This option uses a predefined printer profile or a user defined profile In the Printer profile box select a profile Click the adjacent Properties button to enter a set up dialog box From the Printer specific tab in the Printer language box select the format Click the adjacent Properties button to enter additional settings related to
31. an preset From the Mode drop down list select Indexed colour Click on the adjacent button A dialog box appears Select the number of output colours Select one of the following methods to calculate the index values Linear separates and limits the output colours of the image to the selected number without a prescan Example If you choose 16 output colours from a true colour image the entire colour spectrum denoted by a wheel will divide into 16 equal parts to determine the output colours This method can work for certain maps or line art images but not for photographic images Adaptive photo uses an algorithm optimised for photographs following a prescan analysis Adaptive map uses an algorithm optimised for maps following a prescan analysis Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Brightness and contrast page 70 n Lightness page 71 n Gamma page 67 Click Scan when you are satisfied with the results Scanning modes 61 Classified colour mode 62 ONG O1 R WD The classified colour mode scans the observed colour features of an image by using a colour look up table LUT n Requires the use of a LUT file created from feature extraction n Use for batch scans of similar types of documents that require similar output colours and enhancem
32. and copy settings as you would when you print individual files Processing image files 91 Selecting a predefined printer profile 92 The properties for the predefined printer profiles are as follows n CALS gp4 printer on page 92 n CRF Printer on page 92 n JDL Printer on page 92 n LTX Printer on page 92 a PCL Printer on page 93 a RTL Printer on page 93 n TIFF gp4 printer on page 93 n Xerox Xerox Versatec printer on page 93 CALS gp4 printer n Format CALS gp4 n Control language None n Margins CRF Printer n Format CRF a Resolution Defaults to 400 dpi n Control language None or CDCL n Margins JDL Printer n Format JDL n Model 950 or 4000E Defaults to 950 n Compression Uncompressed compressed defaults to compressed n Resolution 203 x 203 dpi or 203 x 406 dpi Defaults to 203 x 203 n Render type Device Best Cluster Dither Pattern Dither Scatter Dither CMYK Contex RIP n Control language None n Margins LTX Printer n Format LTX n Model LTX320 321 LTX320L LTX420 LTX420L Defaults to LTX 320 n Control language None n Margins Oc Scan User Manual PCL Printer n Format PCL n Format options n Resolution Defaults to 300 dpi n Control language None n Margins RTL Printer n Format RTL n Compression Uncompressed Run length encoded Pack bits Seed Row or Group 4 n Resolution Defaults to 300 dpi n Rende
33. angle elsewhere in the overview panel to look at another of detail To make adjustments In the Adjustments tab modify settings as applicable Wait one to two seconds between each modification to let the scanner update the prescan Note A though you may be working on a partial image in the detail panel your adjustments apply to the whole image when you scan it to file Continue to modify settings until you are satisfied with the prescan Click Scan to scan to file Oc Scan User Manual t To select another mode for prescan 1 Click Stop This aborts the prescan 2 Return to the Scan set up tab and select another mode Viewing image details during a prescan During a prescan you can view the details of different areas in a scanning image in order to verify your adjustments and settings The Scan window contains two panels n The overview panel on the left displays the entire view of the scanning image n The detail panel on the right focuses on a specific area of the scanning image outlined by an indicator square in the overview panel t To focus on an area n With the cursor point and click on a specific area of the scanning image in the overview panel A new prescan starts displaying that area in the detail panel t To move the area indicator square 1 Click on the area indicator square in the overview panel Drag the square to another area in the image 2 Move the horizonta
34. anning media The guidelines and instructions apply for scanner model s originally constructed for thick media scanning Adjusting the insertion slot Normally the insertion slot on your scanner will be set to take in normal scanning media To carry out thick media scanning you must enlarge the insertion slot space on your scanner and fit it to your thick original See the Operator s Guide that came with your scanner for instructions on making insertion slot adjustments Positioning the scanner Don t place the scanner pressed up close to a wall because a thick and stiff original will not bend and fall towards the floor as it passes out the other side of the scanner Make sure you position your scanner so that the empty space behind it is at least as long as the original being scanned Inserting and supporting thick documents It is recommended to insert thick media using Center Alignment which gives a balanced grip from the rollers in the scanner Remember to set the scanner to Center Alignment reading in the application s File Menu Scan Preferences Scanning tasks 49 It is also recommended you support the original with both hands during scanning so that it does not tilt and thus distort the image in the end result This should be done both at front as the original enters the scanner and from behind as it exits Limitations to consider prior to scanning thick media 50 Prior to scanning thick documents please consider the follow
35. automatic paper detection to set the scan width or for originals that are near standard sizes Note This option is available on selected scanner models To use automatic paper detection In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Auto paper size Select from the list of available automatic paper sizing Note The automatic paper sizing types available depend on your scanner model Auto size ISO US detects the original s width and left offset approximating to the nearest standard ISO or US paper size The orientation also affects automatic sizing The length is based on the detected standard size Auto width detects the original s width and left offset Use this option if your original does not correspond to any standard size Auto image width detects the original s size including the maximum paper width and scans the entire length of the original To enter the paper size by width In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Paper width only Enter the paper width in the box To customise a paper size In the Scan set up tab click the arrow next to the Fixed paper size box A submenu appears Select Paper set up then Paper size A dialog box appears with a list of available fixed sizes from which you can create modify or delete
36. ch you want to create a filter choose one of the following methods to create a preliminary LUT from your true colour image t To select a LUT creation method 1 From the Feature menu select Create LUT A LUT creation dialog box appears 2 Select one of the following and click OK to create a preliminary LUT based on the chosen method Maps CAD plots adaptive This option uses a specific algorithm adapted for vector type images Photo artwork adaptive This option uses a specific algorithm adapted for raster type images Image independent linear This option redistributes evenly the actual input colours into the number of output colours that you specify Load predefined colours This option uses existing colour palettes that you select from the browser of file type lut tif pex pal 3 Click the adjacent button to define the set up parameters for the selected method RGB or HSV are colour spaces that the algorithm uses to calculate the colour distances Number of colours sets the number of output colours that you want for the LUT filter Minimum distance designates the number of output colours in function of the shortest distance between colours as a percentage of the colour wheel RGB or HSV 4 Inthe Number box enter the number of colours 5 Click Browse to select the palette to use Start Feature extraction 107 Base the
37. cient in most cases Note In the greytone mode you can only edit the global gamma curve Scanning adjustments 67 To display the gamma curve In the Adjustments tab select Gamma curve Click the adjacent button The gamma dialog box appears To edit the gamma curve Select the Red Green or Blue colour channel curve that you want to edit The curves displayed represents the selected colours Select Identical curves to set all active curves to the same value Double click on the curve to set and display the editing points handles You can click on these handles and drag them to adjust the curves either separately or as one curve Select either the Linear or Curve option to select straight lines or curves between the handles In the Gamma box enter a value a ratio of input vs output 6 Use the dialog box options and commands to edit the gamma curves for best results Gamma dialog box options and commands 68 n Undo all Resets the original gamma curves n Reset Resets the selected curve back to linear 1 1 n Line Displays the curve in a linear representation n S curve Sets the Floyd Steinberg curve mostly used for photo enhancement n Grid Displays a grid in the background to assist in the editing process n Apply Activates the gamma setting in a new prescan the gamma dialog box stays open n
38. d file formats 131 Setting the CALS Gp4 orientation 132 For CALS Gpd files the way in which the optical acquisition deals with orientation requires two operations The pixel path sometimes referred to as pel path and line progression directions specified for the document will guide the user when he processes the image To get proper viewing a user application will take the pixels from the data stream and place them on the screen in the directions indicated It will lay down the first line of pixels along the pixel path direction then the second one etc along the line progression direction The user application knows its own requirements if the target device is a display the pixels may be placed in memory In one organization if the target device is a printer the pixels may be placed in memory by the application In a different way The pixel path direction may have any of four values and the line progression direction can be at either of the two possible right angles to it Therefore this model can describe images that are not only rotated but also mirrored either vertically and or horizontally This allows the orientation parameters to describe how to image a file that might have resulted from scanning the back side of an aperture card or paper sepia The figures below illustrate the possible orientations mn FE 4 i Be G 9 CALS orientation If a mix of scans is done in such
39. d print of continuos shades of gray like in photos Halftones are distributed throughout the image for softer transitions between black and white To scan in B W copy photo mode In the Scan set up tab select your scan preset From the Mode drop down list select B W Copy Photo Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Adaptive adjustments page 66 n Sharpen soften filter page 74 n Blur filter page 69 Click Scan when you are satisfied with the results Black and white Copy adaptive mode a kh N This mode uses dual 2D Adaptive enhancement with ADL error diffusion halftoning 2D Adaptive thresholding and 2D Adaptive background suppression This mode is suitable for copying scan and print of Sepia Blueprint and other originals with heavily distorted foregrounds and backgrounds where the shades that create unwanted noise are close to the shades that make up the image s data and the two are hard to differentiate To scan in B W Copy adaptive mode In the Scan set up tab select your scan preset From the Mode drop down list select B W copy adaptive Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Adaptive adjustments page 66 n Sharpen soften filter page 74 n
40. der or type a value to specify the minimum number of pixels corresponding to a LUT output colour to remove as a percentage of the total number of pixels The colours with a pixel count within this percentage n flash on the image n show a blue mark at the foot of the columns in the histogram n show a straw in the centre of the discs in the colour wheel Start Feature extraction 123 B 3 Click Apply This function remaps the pixels in the RGB image corresponding to the removed LUT output colours to the nearest active LUT output colours Undo an operation You can undo a change that you don t like The Undo function can also apply to the protection and removal of colours t To undo an operation k n On the LUT toolbar click the Undo button as many times as necessary to undo the most recent unsaved changes Note The Undo function also reverses a colour s protection status 124 Oc Scan User Manual ES Oc Scan User Manual Appendix A Supported file formats n Using available file formats on page 126 n Setting the CALS Gp4 orientation on page 132 125 Using available file formats 126 Oc Scan supports more than fifty industry standard file formats The following reference section gives a brief description of the available formats in which you can scan your documents However consult your application s user manual to get detailed parameter requirements n
41. discs are located in the triangle t To focus on a area of colours 1 Position your mouse on the horizontal line at the top of the inverted triangle 2 Click and drag this line to the top of the area that you want to select 3 Repeat for the horizontal line at the bottom of the inverted triangle The selected area between the two lines is white The colours within this selected area show up in the hexagon on the right side of the screen View the output colours in a histogram The LUT histogram displays the LUT output colours that have been extracted from the original true colour image The height of the columns indicate the proportional number of pixels that have been mapped to that particular colour This screen is only active in the LUT creation mode t To access the LUT histogram 1 Click the histogram button on the LUT toolbar 2 Choose the presentation of LUT histogram as a function of pixel count or as output colour indexes or as gradations of hue saturation and value lightness Start Feature extraction 113 t To select a histogram presentation 1 From the Feature menu select Histogram sorting 2 Choose one of the following sorting methods n Pixel count sorts pixels by number in descending order from left to right n RGB sorts RGB colour values in descending order n HSV sorts HSV colour values in descending order n Palette order sorts colours by their palette index values 114 Oc
42. e A Supported file formats 129 Igs Pek Ras Softdesk uncompressed greyscale format Greyscale 8 bit format widely compatible Z Soft for PC Paintbrush Native greyscale format for UNIX Jpeg Jpeg 2000 Joint Photographic Experts Group compressed format Colour formats 130 The colour formats are available when you scan in the RGB indexed or classified colour modes The colours are maintained when you convert between the following colour formats 24 bit true colour formats produce large files For example an E size image that is scanned at 300 dpi results in a 450 Mb file Name Tif Tif Tif Tif Bmp Pex Ras Jpeg Rtl Pcl Type Application Description Tif uncompressed 24 bit colour level version Tif packbit compressed 24 bit colour level version Tif LZW Lempel Ziw Welch compressed colour version Feature extracted and indexed 8 bit and 4 bit colour formats Microsoft Windows bitmap file format in 24 bit true colour and 8 bit and 4 bit feature extracted and indexed colour formats 24 bit true colour 8 bit and 4 bit feature extracted and indexed colour formats Z Soft for PC Paintbrush Native 24 bit true colour 8 bit and 4 bit feature extracted and indexed colour formats for UNIX Joint Photographic Experts Group compressed format Hewlett Packard Raster Transfer Language 8 colour output file format 3 bitplanes supported on the HP DesignJet and the NovaJet plotters Hewlett Packard 24 bit ou
43. e again on that colour Merge similar colours 120 You may have in your image different shades and tints of the same colour such as several gradations of blue in a blue sky You can merge these colours to produce one single blue When the difference in the colours is slight this operation has the advantage of reducing the number of colours and therefore the file size without greatly compromising the colour quality in the output image Oc Scan User Manual t To merge a picked colour with similar colours 1 Pick out the blue colour that you want to merge H 2 Click the Merge similar colours button A dialog box appears 3 Move the slider or type a value to specify the distance of similar blues as a percentage ofthe full colour spectrum that you want to merge with the picked blue colour The colours pixels within this distance n flash on the image n show a blue mark at the foot of the columns in the histogram n show a straw in the centre of the discs in the colour wheel B 4 Click Apply This function merges all unprotected LUT output colours within the specified distance into the picked blue colour Protect a colour When you obtain a colour that you are satisfied with during the LUT editing process you can protect that colour from accidental modification Once you have protected a colour you cannot merge remove or explode it into other colours However you can merge other colours into it
44. e the modification Processing image files 87 Despeckling a scanned image For scanned black and white images you can clean small black spots from a white background or fill small white holes in a black solid with the despeckling hole filling function n Despeckling removes black spots that are smaller than or equal to the speckle size that you define n Hole filling fills with black a white speckle that is smaller than or equal to To despeckle or fill holes 1 With the image open in the View window click the Despeckle button 2 Click the arrows to set the speckle or hole size 3 Click OK to apply the settings and update the image 4 From the File menu select Save or Save as to save the modification Inverting the image colours 88 You can invert the colours in a scanned image n For B W images black inverts with white and vice versa n For greytone images all shades between black and white are replaced by their opposite n For indexed and RGB colours red turns into cyan green into magenta and blue into yellow To invert colours in an image 1 With the image open in the View window click the Invert button to invert colours Note The inverted effect applies only on the image displayed on the screen and not on the actual image file 2 Reclick the Invert button to turn off the function 3 From the File menu select Save or
45. each change a new prescan shows the effects in the image details Setting the background suppression Background suppression subdues background detail when you raise the value n In the Adjustments tab set the value in the Background suppression box Readjust the adaptive level value if necessary 66 Oc Scan User Manual Editing the gamma curve A gamma curve lets you adjust colour tones when you scan in the following modes n Black and white photo n Greytone n RGB indexed and classified colour What is gamma Gamma measures the contrast that affects the midlevel greys of an image On a gamma curve the lower left end typically represents the darker grey areas of the a scanned image while the top right end represents the lighter grey areas of that image Adjust the gamma to modify the brightness values of the middle range greytones without making drastic changes to the shadows and highlights of an image How to work with gamma curves You can set the gamma as separate curves for each colour red green and blue or as a common curve global When you set the global gamma curve Oc Scan copies the changes in the red green and blue curves If you have set brightness and contrast previously the curves reflect these settings n Edit individual curves if you want to work on each colour channel separately n Edit a global curve if you want to maintain the colour balance suffi
46. ection in the image Fel lt 1 Click the Selection button to change the cursor into a cross hair 2 Click and drag a rectangle to cover a selected an area You have the following possibilities n To resize move the cursor over any rectangle corner to display a resizing handle a blue arrow Click and drag any corner to resize the rectangle n To change the location move the cursor over any segment to display the movement handles Click and move the rectangle to another location on the image as needed n To activate the zoom function click inside the rectangle n To abort moving and resizing operations press the lt ESC gt key n To undo the selection and turn off the function click the standard cursor Processing image files 79 Zooming in the image 80 There are several zoom functions that you can use in Oc Scan Zoom in allows you to select an area to view You can select several zoom areas successively until you turn off this mode by clicking the icon once again You can get a zoom factor of up to 16 1 Zoom out takes the view out to 2 1 with the pivot point positioned in the middle of the screen This mode turns itself off a Zoom bird s eye displays a full view of the image with a frame outlining the current zoom area You can click and drag the selected area to another location on the image Zoom grid is a toggle function that superimposes a one pixel wide gray
47. ed image of your original Tip When you scan transparent negatives from the back you can use the mirror function and the inversion function simultaneously to create righted positives Oc Scan User Manual a To scan a mirror image In the Scan set up tab select your settings such as scanning mode resolution and paper size dh lt gt Click the Mirror button on the Scan toolbar Click Forward to start a prescan You can see the mirrored effects of the image on screen In the Adjustments tab make the necessary settings Click Scan when you are satisfied with the results Click Stop if you want to cancel the operation and restart a prescan Note Mirroring is a toggle function that you can turn off at any time However it must be on in order to mirror the image when you scan to file Inverting colours during prescan a n For black and white images black inverts with white to create a negative image or a positive image from a negative original black and white threshold or adaptive modes n For greyscale images all shades between black and white are replaced by their opposite greytone mode n For indexed and RGB images red turns into cyan green into magenta and blue into yellow indexed and RGB colour modes Tip When you scan transparent negatives from the back you can use the mirror function and the inversion function simultaneously to create righ
48. ent To scan in classified colour mode In the Scan set up tab select your scan preset From the Mode drop down list select Classified colour Click on the adjacent button A browser appears Select the lut file that you want to use Select the resolution and paper size Click Scan A dialog box appears Enter the file name and destination folder Click OK Check that the output file size and colour filter results are satisfactory Oc Scan User Manual Oc Scan User Manual Chapter 5 Scanning adjustments 5 B 5 B 5 Setting the threshold on page 64 Despeckling and hole filling on page 65 Making adaptive adjustments on page 66 Editing the gamma curve on page 67 Blurring colours and greytones on page 69 Setting brightness and contrast on page 70 Setting the black and white points on page 72 Sharpening or softening edges on page 74 63 Setting the threshold 64 The threshold is the value that determines at which level a pixel will convert to black or to white To set manual threshold In the Adjustments tab select Threshold Click the arrows in the adjacent box to select a threshold value A new prescan shows you the effect of the change To set the automatic histogram In the Adjustments tab select Histogram auto Click Scan to scan the document to file without a p
49. ently used settings To use a standard scan preset 1 Inthe Scan set up tab from the Scan preset list select a preset corresponding to your type of original 2 Click Scan to apply the preset settings To hide the standard scan presets 1 Inthe Scan set up tab click on the arrow next to the Scan preset list A submenu appears 2 Select Hide standard scan presets To create a scan preset 1 Make a test prescan Use the scan settings and adjustments most adapted for your type of original 2 Inthe Scan set up tab click on the arrow next to the Scan preset list A submenu appears 3 Select Create Oc Scan User Manual ow Give a name to your new scan preset i e Roadmaps Click OK to save and add it to the list of scan presets for future use with similar originals To modify a scan preset From the Scan preset list select a preset with settings that you want to change Make the necessary changes in the Scan set up and the Adjustments tab Note The name of the current scan preset automatically changes to None to indicate a modification in the scan preset In the Scan set up tab click on the arrow next to the Scan preset list A submenu appears Select Create Give a name to your modified scan preset Click OK to save and add it to the list scan presets for future use with similar originals To delete a
50. er file sizes and faster scanning speed due to the limited number of colours n To achieve greater colour consistency and homogeneity in scanned files of similar types n To gain time in future scans or batch scans of similar originals filter reusability Oc Scan User Manual How you can create a filter used for colour feature extraction You must create a special LUT colour look up table filter for each type of original that you scan You first scan a sample that is most representative of the original type then edit its colours until the only output colours that remain are the colour features actually perceived by the human eye The LUT editor provides a set of tools to merge explode or remove colours At the end of the editing process you have a filter that ideally outputs only one colour for each feature in the scanned image How the scanner performs colour feature extraction Using this LUT filter the scanner remaps the observed colours to the selected output colours Hence the final image contains only the colours specified in the filter The file data decreases from 24 bits per pixel to 4 or 8 bits per pixel Note The LUT filter effects apply to the entire image and not to specific parts of the image When to use colour feature extraction n When you have enhance the clarity of faded or poor quality originals n When you want to scan batches of similar originals n When you want to red
51. er the level of detail you will get in the output image Select the scanning resolution before you scan or prescan a document Choose a resolution based on the intended function of the final output image n For offset printing set high resolutions n For on screen display set lower resolutions n High resolutions 300 dpi and above are necessary to display small details as in maps clearly However you will also have a larger file size Consult your printer documentation for recommendations n Do not use an image editor to increase the image resolution as this will not improve the image quality t To set a resolution 1 In the Scan set up tab click the arrow next to the Resolution box A submenu appears 2 Select one of the following methods The available methods depend on your scanner model Normal lets you set the scanning resolution in one dpi increments Turbo speeds the scanning process up to twice the normal speed This option does not work for resolutions below 200 dpi Physical uses the actual unscaled physical resolutions of the attached scanner This is useful if you scan in greytone mode for postprocessing Anti Aliasing A high quality resampling of the optical resolution Scanning is performed at the scanner s physical resolution and resampling to the requested resolution is done in the PC Effective in cases where scanning of raster originals lead to moir like interferences i
52. er you are in the main view in the viewboards in the colour wheel or the histogram screen You can only select one colour to edit at a time The picked colour shows up in the colour indicator box next to the eyedropper on the toolbar To pick a colour pixel from the image In the image zoom in closely to the colour pixel that you want to pick Click the eyedropper on the LUT toolbar The cursor changes to an eyedropper Click on the colour you that want to pick This colour shows up in the indicator box next to the eyedropper In the image all the pixels containing that colour will flash to show all the areas where that picked colour appears To pick a colour from the histogram From the LUT toolbar click the histogram button A bar graph appears as a function ofthe sorting method you have selected by pixel count palette order or HSV Click the eyedropper on the LUT toolbar The cursor changes to an eyedropper Click on the colour that you want to pick A full height black border appears around the column representing this colour This colour also shows up in the indicator box next to the eyedropper To pick a colour from the colour wheel From the LUT toolbar click the colour wheel button If necessary narrow down the precise range of colours in the inverted triangle indicating the lightness value To do this click and drag on the top and bottom horizontal borders Only the colours that are located in this range a
53. ettings and exit the dialog box Note Press the lt ctrl gt key at the same time as you move the arrows to display the effects on screen instantaneously 4 Adjust the values for best results 5 Click OK to apply the correction and exit the dialog box Note If you click Cancel the brightness and contrast settings return to their initial values 6 From the File menu select Save or Save as to save the modification Adjusting the image hue saturation and value lightness This technique allows you to correct the colour values of the image according to the HSV model n Hue The colour changes depending on its location on the colour spectrum n Saturation The colours go from dull to brilliant n Value lightness The colours go from black to white Processing image files 85 To adjust hue saturation and value From the Image menu select Hue Saturation Value A dialog box appears Click on the slider to adjust the values Click Preview to view the effects on the image without leaving the dialog box Click OK to update the image and exit the dialog box Note If you click Cancel the HSV settings return to their initial values From the File menu select Save or Save as to save the modification Adjusting the image RGB values You can also adjust the colour values of an image according to the RGB model To adjust red green b
54. for evaluating this manual If you have any other comments or concerns please explain them on the following page B Miscellaneous 137 Comments This reader s comment sheet is completed by Name optional Occupation Company Phone Address City Country Please return this sheet to Oc Technologies B V Attn ITC User Documentation P O Box 101 5900 MA Venlo The Netherlands Send you comments by E mail to itc userdoc oce nl For the addresses of local Oc organizations see www oce com Oc Scan User Manual Addresses of local Oc organizations Oc Australia Ltd P O Box 363 Ferntree Gully MDC VIC 3165 Australia Oc Osterreich GmbH Postfach 95 1233 Vienna Austria Oc Belgium N V S A Avenue J Bordetlaan 32 1140 Brussels Belgium Oc Brasil Com rcio e Industria Ltda Caixa Postal 3187 01060 970 Sao Paulo SP Brazil Oc Canada Inc 4711 Yonge Street Suite 1100 Toronto Ontario M2N 6K8 Canada Oc Office Equipment Beijing Co Ltd Xu Mu Cheng Chaoyang District Beijing 100028 China Oc Eeska republika s r o Hanusova 18 14021 Praha 4 Pankrac Czech Republic B Miscellaneous Oc Danmark A S Kornmarksvej 6 DK 2605 Br ndby Denmark Oc France S A 32 Avenue du Pav Neuf 93161 Noisy le grand Cedex France Oc Deutschland GmbH Postfach 101454 4330 Miilheim an der Ruhr 13 Deutschland Oc Hong Kong China Ltd 12 F 1202 The
55. ft Windows native bitmap format Media Cybernetics Dr HALO raster editor CADCore format Hitachi Inc CALS untiled format compatible with CCITT Group4 format CALS tiled format compatible with CCITT Group4 format CALS tiled format compatible with CCITT Group4 format Black white tiled raster data format as defined by the Joint Engineer ing Data Management Information and Control System The image is divided into tiles of 512 512 pixels each tile being compressed with the 2 dimensional CCITT group 4 encoding algorithm Raster format Indigo Graphics Systems Inc ABB Engineering Automation Inc format compatible with CCITT Group4 A Supported file formats 127 VifAB ABB Engineering Automation Inc format compatible with run length compressed format intergraph type 24 CitIN INTERGRAPH Inc format compatible with CCITT Group4 RleIN INTERGRAPH Inc format compatible with runlength compressed format Pict Format for Macintosh packbit encoding Pro Rlc Xerox Pro Scan Ric format Wof Wicks amp Wilson internal file format Tif Tag information file format for Aldus Microsoft compatible with a number of raster and desktop publishing It is also the standard image file format for image processing and enhancement programs Fax file formats When you scan or convert to a fax file format Oc Scan generates multiple output files each corresponding to a normal fax file letter or A4 size The files have numbered exte
56. g box remains open A new prescan shows the effects in the image details n To reset all values back to 0 click Reset n To use the original values click Cancel The dialog box closes n To apply the new values and close the dialog box click OK Click Scan when you are satisfied with the results Note You can save these settings in Scan presets Scanning adjustments 71 Setting the black and white points Set the black and white points to determine the amount of highlight and shadow detail in a scanned image This feature is available in greytone and colour scanning modes How does it work 72 During a prescan the selection of a black point and a white point in the scanning image allows you to determine n a particular dark grey level to use as a reference for black in the output image n a particular light grey level to use as a reference for white in the output image The ideal is to calibrate the white point so that the lightest part of the image has zero detail and to calibrate the black point so that the darkest part of the image has zero detail The aim is to improve the overall image contrast To open the B W point dialog box Click the B W point button on the toolbar A prescan starts and a dialog box appears with a luminance histogram of colours and greytones Select the following options as applicable Logarithmic gives a different interpretation of the histog
57. ge meets the exit rollers or when the trailing edge leaves the entry rollers To omit this problem the leading and trailing edges are by default skipped when in one of the extended media thickness Oc Scan User Manual positions i e insertion slot positions other than Normal Skipping of the leading trailing edges can be turned OFF ON using the Extended thickness paper handling capabilities This setting option will only be available on scanners originally constructed with thick media scanning capabilities It is found in the Scanner Setup dialog Extended Thickness Use extended thickness paper handling check box Scanner adjustments for thick media Your scanner needs to keep certain internal factors in line in order to function properly The scanner frequently performs a completely automatic adjustment of its light profile and stitching factor but only when in the Normal thickness position When you raise the insertion area to accommodate thick media these automatic adjustments are turned off and you have to take certain measures to maintain them Light profiles Adjustment of the light profiles must take place frequently because even slight movements of the cameras can affect optimal scanning conditions As stated above the light profiles are only adjusted at the Normal 0 2mm position It is therefore important to let the scanner start up at the Normal position so that the light profiles wil
58. ge when you scan to file Scanning tasks 41 Scanning to file 42 BR ND OON OW To scana document to file without adjustments Place your original document face down along the insertion slot on the scanner In Oc Scan click the Scan tab to go to the scan window if necessary From the Scan set up tab set Scan preset to none From the drop down list boxes select the scanning mode resolution and paper size Click the Scan button Specify the destination file name and directory Specify the output format see Selecting the output file format on page 42 For certain formats click Options to give additional set up parameters see Setting up parameters for TIFF and JPEG on page 95 Click OK to start the scan The file type extension displays next to the file name Selecting the output file format Select an output file format before you scan a document to file Oc Scan supports more than 50 industry standard file formats for maximum compatibility with general and specialised applications within CAD DTP FAX and Graphics Depending on whether you scan in colour or greyscale mode specific output format types are available see Supported file formats on page 125 When you choose an output format type bear the following in mind n If you are scanning an image for use in a specialised computer application consult your application s parameter set
59. grid for visual separation of pixels when the zoom factor is 8 1 or greater Oc Scan User Manual Modifying the image Aligning the image on page 81 Cropping the image on page 82 n Manipulating the image on page 83 Resizing the image on page 82 B 5 5 Aligning the image You can align an image that has been skewed during scanning t To align an image E 1 Click the Measure button to define an alignment reference line The cursor becomes a marker 2 On the image click and drag a line to use it as an alignment reference 3 You can manually modify the alignment reference line for best results by using your cursor as follows To adjust the length or change the alignment angle drag the handles on the line s end points To switch endpoints right click the handle of one end point to move the cursor over to the opposite end point To reposition the line click the handles to move the line elsewhere while retaining its original angle To zoom in further on the image move the cursor away from the line To cancel the line completely click the Measure button again B B B B H 4 When you have found the correct alignment click the Align button The alignment angle appears in the status bar at the bottom of the screen 5 From the File menu select Save or Save as to save the modification Processing image files 81 Cropping the im
60. he stitching adjustments Adjust the insertion slot to accommodate your thick media as described in the scanner s operations guide Load the thick original you wish to scan Center loading is recommended with thick originals The scanner s media transport rollers grip more evenly with center loading Select Scanner Setup in the Scan Menu Select the Extended Thickness tab and check the option box to eneable making adjustments Make a test scanning Bulky thick media needs to be supported with both hands on its way in and out of the scanner Stitching errors will be easiest to see on an image with one or more clear diagonal lines If the lines seem uneven check the box labeled Adjust for extended media thickness Change the value for each of the scanner s cameras Normally only positive values should be used Make test scans and readjust the values until you are satisfied that the lines are stitched correctly Click OK to accept your settings Oc Scan User Manual Oc Scan User Manual Chapter 4 Scanning modes Black and white modes on page 54 Colour modes on page 59 53 Black and white modes 54 Oc Scan offers the following black and white scanning modes Certain modes are available only on selected scanner models and configurations Use the following guidelines to select the scanning mode for your needs n Black and white threshold mode on page 55 n Black and white adapt
61. hreshold value and number of pixels as parameters To bring out more detail in the histogram select the Logarithmic display option For example an image that contains a large white background will show a very high peak and other colours that are represented by relatively small amounts of pixels will hardly be visible A logarithmic function will recalculate the histogram to make large groups of single colour pixels less dominating and to bring out details that otherwise would not be visible in the histogram How to select a threshold value from the histogram Normally the best threshold selection lies in the deepest part of the valley between the two peaks and closest to the peak that represents background information in the drawing n When you scan at a specific threshold value all grey tones below the threshold will be represented as black pixels n All grey tones above that threshold value will be represented as white pixels Scanning adjustments 75 76 Oc Scan User Manual Oc Scan User Manual Chapter 6 Processing image files Working in the View window on page 78 Modifying the image on page 81 Editing the image on page 84 Printing and converting image files on page 90 77 Working in the View window n Opening saving closing an image file on page 78 n Getting the image file properties on page 79 n Making a selection in the image on
62. ing precautions and limitations No prescanning Prescanning is like scanning but the scan is carried out only in memory Prescanning is used when a user wishes to evaluate a scan while making such adjustments as color tones threshold etc In some modes the scanner performs its own prescans in order to make automatic assessments and calculations Prescanning is carried out by repeated scans of the original as it automatically slides back and forth in a direct path over the cameras Unfortunately the sheer bulkiness and stiffness of thick media makes it likely to swerve slightly in its path over the cameras This means that the mechanical sliding cannot be performed with enough accuracy to enable reliable prescanning Below is a list of the scanning tools and modes that require prescanning and therefore cannot be performed with thick media n Index Color scanning mode a Histogram Auto in B W threshold mode n Histogram Manual in B W threshold mode n Apply buttons in the mode adjustment dialogs n Black and White point Setup n Automatic Alignment n Scanwindow Scan an isolated image portion Speed is reduced In the thick media positions scanning speed is automatically reduced in order to ensure smooth movement despite the media s low grade of flexibility The Normal position gives the highest scanning speeds Edge distorsion Scanning of thick originals can create distortions in the end result when the original s front ed
63. ion 66 Editing the gamma curve 67 What is gamma 67 How to work with gamma curves 67 Gamma dialog box options and commands 68 Blurring colours and greytones 69 Setting brightness and contrast 70 Adjusting the lightness value 71 Set the lightness saturation and balance 71 Setting the black and white points 72 How does it work 72 Sharpening or softening edges 74 Histogram 75 How to select a threshold value from the histogram 75 Chapter 6 Processing image files Working in the View window 78 Opening saving closing an image file 78 Getting the image file properties 79 Making a selection in the image 79 Zooming in the image 80 Modifying the image 81 Aligning the image 81 Cropping the image 82 Resizing the image 82 Manipulating the image 83 Editing the image 84 Counting the number of colours in an image 84 Getting the colour value of a pixel 84 Adjusting image brightness and contrast 85 Adjusting the image hue saturation and value lightness 85 Adjusting the image RGB values 86 Converting a colour image to greyscale 86 Converting an image to classified colour 87 Decreasing colours and greytones in an image 87 Table of Contents Despeckling a scanned image 88 Inverting the image colours 88 Stretching the histogram 89 Printing and converting image files 90 Printing an image file 90 Printing image files in batches 91 Selecting a predefined printer profile 92 Creating a customised printer profile 94 Setting
64. ite points 72 blur 69 brightness and contrast 70 despeckle hole fill 65 gamma curve 67 lightness value 71 sharpen or soften filter 74 threshold 64 Align image in View 81 Align image prescan 40 Alignment detection 21 Area selection edit 79 Auto paper size 31 B Background suppression 66 Batch print 91 Batch scan 43 log 44 preferences 22 Black and white modes Adaptive 56 Adaptive photo 54 Copy ADL 56 Grey adaptive mode 57 Photo 58 Photo ADL 58 Threshold 55 Black and white points 72 Blur 69 Brightness and contrast 70 Brightness and contrast in View 85 Index c CALS Gp4 orientation 132 Camera stitching 26 Classified colour conversion 87 Colour modes 59 Classified 62 Greytone 59 Indexed 60 RGB true colour 62 Colour wheel 112 Convert file formats 96 Convert image to classified colour 87 to greyscale 86 Correction factor 23 Count colours 84 Crop image in View 82 D Decrease colours and greytones 87 Default scan file 20 Despeckle hole fill prescan 65 Detail panel 37 Display window 19 F Feature LUT window 15 Feature extraction adaptive method 107 based on image selection 108 image sample 106 introduction 100 File format output 27 open save close 78 properties 79 supported formats 125 First scan 26 Flip image in View 83 141 G Gamma curve 67 Grey adaptive mode 57 Greyscale conversion 86 H Histogram 75 LUT output colours 113 stretch 89 Histogra
65. iting You can choose the type of colour space that the program uses in the LUT creation process This determines the calculation method during the editing functions Colours remap according to the chosen colour space Tip Select the colour space before you start the LUT editing process as any change affects only those colours remapped after the change t To choose the colour space 1 From the Feature menu select Colour space 2 Choose either RGB or HSV Get pixel information During your LUT editing process you can get information about an individual colour pixel by positioning your mouse over it This information shows up in the status bar at the bottom right window indicating n The intensity and RGB or HSV values 1 H S VP or L R GP B n The pixel count for that particular colour n The protection status for that particular colour t To change the colour values from RGB to HSV 1 From the File menu select Preferences 2 Select Colour info field then RGB or HSV Start Feature extraction 109 Switch between the RGB LUT views When you work in the LUT window you can view the image as a true colour image or as a filtered colour image once you have applied the LUT Switch between these two views to see the effect of the modifications that you make in the LUT editing process This toggle function can work in conjunction with the zoom functions ei
66. ive mode on page 56 n Black and white Copy Normal on page 56 a Black and white copy photo mode on page 57 n Black and white Copy adaptive mode on page 57 n Black and white photo mode on page 58 Oc Scan User Manual Black and white threshold mode a kh NN This mode applies a global threshold value to determine whether a pixel is black or white n Use for black and white drawings and line art n Adequate for drawings that do not have isolated difficult areas for which a single global threshold value would suffice To scan in B W threshold In the Scan set up tab select a scan preset if applicable From the Mode drop down list select B W threshold Select the resolution and paper size Click Forward to prescan Select the threshold method page 64 n Manually Threshold option n Automatic histogram n Manual histogram Select also the following settings if applicable n Despeckling and hole filling page 65 Click Scan when you are satisfied with the results Scanning modes 55 Black and white adaptive mode Oo BR ND A mode that adapts the threshold to darker or lighter areas in the original n Use for line drawings particularly difficult blueprints and brown transparencies sepias or stained or faded originals n Produces relatively small file sizes suitable for digitising To scan in B W adaptive mode In the Scan
67. ixel You can get the RGB or HSV value of a colour pixel or group of pixels in the image The colour information displays in the status bar as follows n Intensity and RGB L R GEP B n Intensity and HSV LP H SE Vi t To get the pixel colour value 1 With the image open in the View window click the eyedropper button 84 Oc Scan User Manual 2 Move the eyedropper over the pixel you want to display its value in the status bar 3 To get the average value of a group of pixels click and drag a square to select the area of pixels The computed average displays in the status bar 4 To turn off the function reclick the eyedropper button Adjusting image brightness and contrast n Brightness indicates how light or how dark an image appears n Contrast determines how much of the dark parts of the image stand out and how much of the light parts of the image recedes t To adjust brightness or contrast 1 From the Image menu select Brightness Contrast A dialog box appears n For greyscale images this function applies to pixel values n For indexed colour images this function applies to palette colours individual RGB values n For RGB colour images this function applies to pixel colours individual RGB values 2 Click and drag the slider to set the brightness or contrast values between 100 and 100 3 Click Preview to update the image without leaving the dialog box or OK to apply the s
68. l adjust themselves before your new scanning session If you are scanning thick media over many hours then it is strongly recommended that you from time to time take down the insertion slot adjustment to the Normal position in order to trigger a new light profile adjustment The scanning application will give a warning if a light profile adjustment hasn t taken place within the last two hours Stitching Stitching is the term used to describe the scanner s ability to connect image points between cameras despite overlapping or missing pixels Stitching settings are also automatically adjusted in the Normal position but unlike light profiles the stitching settings found at the Normal position may not be correct for your thick media Therefore whenever you scan thick media at other positions than Normal you have to check the stitching factor and perhaps adjustment it Normally only stiff media will affect stitching while flexible media will likely be stitched properly regardless of its thickness Stiff media will perch itself Scanning tasks 51 52 on top of the scanner rollers and thus rise a small distance over the glass plate which serves as the basis for Normal stitching settings The modified stitching parameters will automatically be selected when in one of the extended media positions and not in the Normal position where the standard automatic stitching setting is always used Performing t
69. l be the same Click Reset if you want to return to the original values To pick the points manually Click on a black or white eyedropper as applicable In the detail panel pick a point To go to a different detail area drag the square in the overview panel Drag the cursor to select an area of pixels When you release the button an average of the pixels in the area defines the black or white point To select one pixel just click and release without dragging Note Press the ESC button to deactivate the eyedropper at any time during the picking process and return to the B W point dialog You have the following options n Click OK to activate new settings n Click Reset to return to the original values n Click Cancel to return to the original values and exit the dialog box The new values shift in relation to the values established during calibration To return to the calibration values set the black point to 0 0 0 and the white point to 255 255 255 n The range is 0 0 0 to 15 15 15 for the black point and 128 128 128 to 255 255 255 for the white point These settings vary depending on the scanner model n These settings do not remain in the scanner s memory At start up the scanner applies the calibrated settings of 0 255 for the black and white points respectively Scanning adjustments 73 Sharpening or softening edges 74 The sharpen soften filter in
70. l scroll bar in the detail panel to change the horizontal position of the indicator square 3 Click the Forward Halt and Backward buttons on the toolbar to change the vertical position of the indicator square Scanning tasks 37 Manipulating the image during prescan You can make the following image manipulations during prescan n Selecting an area to scan on page 38 Scanning a mirror image of the original on page 38 Inverting colours during prescan on page 39 Aligning an image during prescan on page 40 Rotating the image during prescan on page 41 Selecting an area to scan You can select a specific area within an image to scan To scan a specific area in the image In the Scan set up tab select your settings such as scanning mode resolution and paper size Click Forward to start a prescan Click the selection button on the Scan toolbar The cursor changes to a cross hair Draw a rectangle to cover the area you want in the overview panel You can resize or move the selection by dragging on its handles corners and sides This is possible in both the overview and detail panels Click Scan once you have selected the area desired Note Area selection is a toggle function that you can turn off at any time However it must be on in order to scan the partial image to file Scanning a mirror image of the original 38 You can scan a mirror
71. les at the end points Drag the handles to adjust the length or change the alignment angle To switch ends Right click the handle of one end point to move the cursor over to the opposite end point To reposition the line Move the cursor over the alignment to reposition the line elsewhere while retaining its original angle To cancel the alignment operations n Press the lt ESC gt key n Click the Stop button to remove the line without aligning Oc Scan User Manual Rotating the image during prescan The rotation function allows you to rotate an image at a selected angle before you scan to file Note Rotation effects are not displayed on screen during prescanning or scanning t To rotate an image during scanning 1 In the Scan set up tab select your settings such as scanning mode and resolution 2 Select a paper size from the Fixed paper size option to activate the rotation functions 4 Rotate left 2h Rotate right Flip E Rotate 180 3 Click one of the rotation buttons on the Scan toolbar 4 Click Forward to start a prescan You only see the rotation effects on the image in the View window after you scan it to file 5 In the Adjustments tab make the necessary settings 6 Click Scan when you are satisfied with the results Rotation is a toggle function that you can turn off at any time However it must be on in order to invert the ima
72. ll display the progress of the data transfer Note Oc Scan will remember and default to the settings for each scan client Scanning tasks 47 Scan to pdf 48 You can scan directly to the PDF file format Scan to PDF In the file Save As dialog select an existing PDF file or create a new file name Select the PDF format as the file type in the Save As dialog Click the dialog s Options button to display a dialog for setting quality image smoothing and additional PDF format setup options Click OK to apply your settings and start scanning to a PDF file Oc Scan User Manual Scanning thick media About scanning Thick Media Scanning needs are not always limited to convenient paper thin media Many industries such as reprographics and GIS will find the need to digitize or copy images printed or pasted on thicker media such as cardboard foamboards gatorboards etc Thick media scanning is not as straight forward as normal scanning Certain procedures should be followed in order to compensate for the original s bulkiness and stiffness Thick media scanning also sets some limitations on certain scanning modes and automatic adjustments This chapter is about the procedures and limitations involved when scanning thick originals The following guidelines and comments apply to media from 2 mm 0 087 thick hereafter termed thick media throughout this chapter Original s from 0 mm to 2mm are considered normal sc
73. lue values From the Image menu select Red Green Blue A dialog box appears Click on the slider to adjust the settings for each colour Tip Press the lt ctrl gt key as you move the slider to display the effects instantaneously on screen Click Preview to see the effects on the image without leaving the dialog box Click OK to update the image and exit the dialog box Note If you click Cancel the RGB settings return to their initial values From the File menu select Save or Save as to save the modification Converting a colour image to greyscale 86 You can convert feature extracted colours indexed colours or RGB colour images to greyscale Oc Scan replaces each colour with a grey tone of equal luminance I 0 3R 0 59G 0 11B To convert to greyscale 1 From the Image menu select Greyscale 2 To undo the operation deselect Greyscale Oc Scan User Manual Converting an image to classified colour BR ND You can apply the effects of a LUT filter to an existing RGB true colour image To convert to classified colour Open the image file in the View window From the Image menu select Classify A browser appears Select the lut file that you want to apply to your image Click OK to convert to classified colour Decreasing colours and greytones in an image This function is a fast although unrefined way t
74. m prescan resolution 20 Hole fill despeckle prescan 65 Hue saturation and value 85 a l Image alignment prescan 40 Invert colours prescan 39 Invert image colours 88 L Lightness value 71 Lightness saturation and balance 71 LUT creation method 107 LUT editing colour space 109 explode colour 117 import customised colour 118 insert new colour 119 merge similar colours 121 pick a colour 116 pixel information 109 protect colour 121 remove colour 122 M Measure image in View 83 Media offsets 24 Mirror image in View 83 Mirror image scan 38 142 Oc Scan User Manual 0 Oc Scan windows 14 Oversize factor 32 Overview panel 36 e P Paper position 20 Paper size Auto paper size 30 by width only 31 custom 32 detection 21 original 30 oversize factor 32 scanner units 30 Pixel information 109 Pixel value 84 Preferences 19 batch scanning 22 prescanning 20 scanning 19 Prescan adjustments 63 an original 36 mode 20 preferences 20 resolutions 20 Presets scan 34 Print image files 90 in batches 91 Printer profiles 92 CALS gp4 printer 92 CRF Printer 92 customised 94 JDL Printer 92 LTX Printer 92 PCL Printer 93 RTL Printer 93 TIFF gp4 printer 93 Xerox Xerox Versatec printer 93 R Resize image in View 82 Resolution setting 33 RGB cube 112 RGB values adjustments 86 RGB LUT applied views 110 Rotate image in View 83 Rotate image prescan 41 Lu S Scan in batches 43 pre
75. ments Graytone mode 256 levels This mode scans the actual gray level of each pixel up to 256 levels Each pixel corresponds to 1 byte 8 bits The images scanned in graytone mode result in files that are 8 times larger than uncompressed files scanned in lineart mode at the same resolution Lineart mode 2 level This mode reproduces each scanned pixel as a single bit either black 1 or white 0 depending on whether its gray level lies below or above the threshold level This mode supports both fixed level and 2 D adaptive thresholding Dithered mode halftone dither Converts gray levels of the scanned pixels into halftones by dithering This results in very high density line mode files that are much larger than uncompressed files scanned in line mode at the same resolution Introduction 11 Install the software Oc Scan runs on Windows 2000 XP and Server 2003 It requires a properly installed and powered on scanner in order to execute all of its functions System requirements a IBM PC or compatible 200 MHz or higher n Windows 2000 XP and Server 2003 n 24 bit true colour graphic display Note To speed up scanning it is recommended that you maximize your workstation memory as Oc Scan uses the available memory for buffers during the scanning process Software installation See the Readme htm on the Oc Scan CD for up to date information about installation on newly supported computers and operating
76. n the more saturated the colour n The size of the LUT colour disc designates the proportionate number of pixels that are mapped to that colour in the original true colour image Discs with small pixel counts have equal minimum sizes RGB cube You can transform the hexagon into a three dimensional RGB colour space To view the RGB cube Right click the hexagon A submenu appears Select RGB cube You can rotate this cube in different directions to view the colours from a variety of angles Oc Scan User Manual t To rotate the RGB cube 1 From the submenu select Rotate A control function appears This function works like a joystick Pull on the arrows to control the cube s rotation You can also click on the cube s corners and rotate it in the direction that you want 2 You have the following options from the submenu n To return to the two dimensional view select HSV wheel HSV Wheel is the default setting n To reset the RGB cube to its original position select Default position n To view the pixel count as equally sized discs select Uniform size Inverted triangle The inverted triangle on the left represents the lightness value of the LUT colours n The top part of the inverted triangle represents the lightest colours moving down to the bottom part which represents the darkest colours n You can focus on a limited number of colours by adjusting the area in which the colour
77. n the scanned image wavy patterns across the pictures Note that it can take longer to transfer the high dpi data to the pc The speed depends on the difference between the scanner s physical resolution and the user requested dpi High Quality The scanner increases camera exposure to add light and thus obtain higher quality Works with both colour and B amp W Use this resolution setting with difficult originals that produce a high degree of noise in the scan result Scanning tasks 33 Note With the High Quality setting the scanner scans at a slower speed and will readjust light profiles and black white point after setting High Quality resolution and just before scanning 3 In the Resolution box select a resolution Using scan presets 34 A scan preset is an option that stores the scan settings and adjustments that you use most frequently such as n Resolution n Scanning mode n Black and white points selection n Adaptive adjustments and threshold setting Note You cannot store paper size in a scan preset n You can use the available selection of scan presets These presets have been tested with standard types of originals such as light paper light dark blueprint light dark brown sepia grey transparency and pencil You cannot modify or delete the standard presets but you can hide them from the selection n You can also create customised scan presets which you can modify and delete for your frequ
78. n the scanner the adjustments require some time before the actually appear on screen Adjust the brightness and contrast for best results After each change a new prescan shows the effects in the image details 3 Click Scan when you are satisfied with the results Tip You can save the brightness and contrast settings in Scan presets Oc Scan User Manual Adjusting the lightness value 3 During prescanning you can adjust the lightness setting for an image in the following modes n Black and white photo n Greytone To set the lightness In the Adjustments tab click on the arrows of the lightness control button to obtain the appearance desired for the image You can adjust this parameter between 100 to 100 Adjust the setting for best results After each change a new prescan shows the effects in the image details Click Scan when you are satisfied with the results Set the lightness saturation and balance BR N During prescanning you can adjust the lightness setting for an image in the indexed classified and RGB colour modes To set lightness saturation and balance In the Adjustments tab select Lightness Saturation Balance Click the adjacent button A dialog box appears In the Red Green and Blue boxes enter the values Adjust the setting for best results as follows n To test the setting click Apply The dialo
79. ng select By count and enter a number The program uses that number to start naming your first document In Scan to file select a destination folder and a representative file name ex map for the scanned documents The software generates an automatic file name Each file name has 3 digits attached to it ex map004 tif map005 tif map006 tif etc Select Overwrite existing files if you want the new files to overwrite the old ones When you deselect this option the file name counter increases until it finds a non conflicting name Once the batch scan completes rename your files as necessary A batch scan log gives you the summary of each batch scan operation Scanning tasks 43 To create a batch scan log 1 Inthe Batch scanning dialog box select the Log to file option 2 Click the Log Options button to select the type of data logged as follows Log for each batch Image format scan mode resolution scan adjustments Log for each scan File name file size paper size hollerith code 5 Verbose This option presents the log data in a readable format for normal reference purposes Compact comma separated This option presents the log data in a format exportable to another application such as a spreadsheet or database Column headers appear only in a new or empty log file otherwise the data appears without headers The information fields that are irrelevant to the
80. nsions 001 002 to 00n You can send these files to normal Group 3 fax machines from a work station via a fax board Name Type Application Description Fax Gamma fax board format version 3 3c Fax2 Enhanced format for newer Gamma fax boards PcxMU A generic fax file format The scanned file is stored in multiple files in Pcx format Scanned trace subset files 128 Oc Scan works only with the trace entity subset of the DXF DXB formats Therefore once you have modified a scanned DxfTR DxbTR file in the CAD system Oc Scan can no longer convert it or print it Name Type Application Description DxfTR A trace subset of the general Drawing Exchange file format This format is simple to export to other computer systems because it is written in an ASCII file DxbTR A trace subset of the general Drawing Exchange Binary file format which stores the file as binary data This compresses the file about ten times more than the Dxf format Oc Scan User Manual When you scan or convert to the trace subset formats define the following parameters which control the raster to CAD entity transformation that takes place on the fly during scanning and conversion Error A range of 0 to 15 is the maximum value allowed when generating the CAD trace entities A small value such as 0 or 1 gives the finest resolution and detail However it has the inconvenience of the largest file size which slows the scanning and converting
81. ntation You can find complete details about the user functions in Oc Scan through the Online User Guide t To access the online User Guide 1 From the Help menu click Contents 2 From the right window check About Oc Scan to access a brief introduction to Oc Scan 3 For details about the scanning viewing or feature extracting functions click the corresponding topic in the table of contents on the left window Introduction 15 16 Oc Scan User Manual Oc Scan User Manual Chapter 2 Starting to scan 5 Calibrate your scanner on page 18 Selecting preferences on page 19 Setting up the scanner on page 23 Making your first scan on page 26 5 5 17 Calibrate your scanner Prerequisites To calibrate the scanner you require the following items provided with the Scanner Maintenance Kit n The Scanner Maintenance software installed n The Scanner Maintenance sheet to perform camera alignment stitching and basic calibration Why calibrate Colour calibration ensures a stable linearity colour balance and chromacity of your scans You need to repeat this operation about once every two months of continuous scanning or when the quality of scanned colours becomes unsatisfactory Note Calibration must be performed after the cleaning of the scan area to ensure precise calibration results How to calibrate 18 To calibrate the scanne
82. o reduce the image file size without going through the entire process of creating a feature extraction filter LUT This function works for black and white greyscale indexed or RGB colour images To decrease colours and greytones From the Image menu select Decrease colours greytones Choose your settings as described below Black and white uses the lightness values of the input image as the basis for thresholding either automatically or manually n Auto threshold computes the threshold directly from the histogram n Manual threshold lets you use the sliders to set the threshold Click Preview to adjust for best results Colours and greytones gives indexed colour output images that are based on an adaptive method or a custom palette Adaptive maps the image colours to the nearest colour for extracted indexed and RGB colours For greyscale input images the output greytones result from equalizing the histogram Select either 16 fixed output colours or the number of colours between 17 and 255 The output file type is 8 bit indexed and the output file size will be the same whether you choose 16 or 255 colours Custom palette lets you load a lut pal tif pex palette The number of output colours and image file type depend on the chosen palette B Click OK to decrease the colours and greytones From the File menu select Save or Save as to sav
83. og if you want to keep a record of the conversion Processing image files 97 98 Oc Scan User Manual Oc Scan User Manual Chapter 7 Start Feature extraction 5 Introduction to Feature extraction on page 100 Extract features with insert and import tools on page 102 Extract features with merge tools on page 104 Start feature extraction on page 106 Work in the LUT window on page 109 n Edit the LUT on page 115 99 Introduction to Feature extraction Feature extraction is a process in which the user selects only the useful colour features in a scanned image and saves them in a filter for future scans of similar types of images What is colour feature extraction When you scan a colour map or drawing in true colour the resulting image file contains many more colours than what the human eye can perceive up to 16 7 million For example the edge pixels of a red line on a white background can have gradations of reds and a blue line crossing a red line will have pixels that are a mixture of red and blue The purpose of colour feature extraction is to filter all the colours in the input image so that only the perceived colours appear in the output image As a result you preserve and enhance the essential colour features in the image while reducing significantly the number of colours Why use colour feature extraction 100 n To get small
84. our button Click on the colours that you want to mark for removal a blue dot appears as a marker B Click Apply The removed colours disappear from the colour wheel and histogram Oc Scan User Manual To remove colours similar to a picked colour If you have several gradations of the same LUT output colour it is possible for you to choose one and delete the rest You specify the length of the radius from the picked colour to the other similar colours as a percentage of the entire range of colours Pick a colour that you want to use as reference i Protect that reference colour e Click the Remove similar colours button Click the slider to specify the radius from the picked colour to the similar colours The pixels located within this radius n flash on the image n show a blue mark at the foot of the columns in the histogram n Show a straw in the centre of the discs in the colour wheel B Click Apply The removed colours disappear from the colour wheel and the histogram The pixels corresponding to the removed LUT output colour remap to the nearest active LUT output colour To remove minor colours If you have a few LUT output colours with only a small number of corresponding pixels that do not greatly contribute to the colour quality of the filtered image you can remove them from the active number of LUT output colours a Click the Remove minor colours button Click the sli
85. page 79 n Zooming in the image on page 80 Opening saving closing an image file 78 ER ND BR ND n When you scan an image to file it automatically loads and opens in the View window n You can also open previously scanned image files from your browser To open a file From the File menu select Open A browser appears In the Files of type box select the file format you want Select the file Click Open To save a file n From the File menu select Save The file is saved under the current file name To save a file under a new name From the File menu select Save as A dialog box appears Enter a new file name Select the file format Click OK Note You can also save a selected portion of the current image as a new file To close an opened file From the File menu select Close If you have made changes to the file a dialog box opens to give you the options for saving your changes Oc Scan User Manual Getting the image file properties You can display the following information for an image file n File name n Size in bytes n Image resolution n Dimensions n File format t To display the file properties n From the File menu select Properties Making a selection in the image You can make a selection in the image to base your LUT filter or to create local viewboards t To define a sel
86. ppear in the hexagon indicating hue and saturation Click the eyedropper on the LUT toolbar The cursor changes to an eyedropper Point and click on the colour disc that you want to select In the inverted triangle the picked colour disc is larger than the others In the hexagon the picked colour disc shows a line in the center This colour also shows up in the indicator box next to the eyedropper Oc Scan User Manual t To deselect a picked colour n Click once again on the eyedropper to turn the function off The last picked colour remains in the colour indicator box in the toolbar Explode a colour The purpose of the LUT filter is to narrow down the number of output colours in a scanned image However you can take a particular unprotected LUT output colour and explode it into several other colours You can specify the number of new LUT output colours that you want to create t To explode a picked colour 1 Pick a colour to explode from the image histogram or colour wheel k 2 Click the Explode colour button A dialog box appears 3 Click the slider or type a value to select the number of colours that you want to explode from your initial LUT output colour You can select between 1 and 63 colours B 4 Click Apply The new LUT output colours are evenly redistributed in the range of the RGB colours that previously belonged to the initial LUT output colour The remapping works according to the nea
87. ption presents the log data in a readable format used for normal reference purposes Compact comma This option presents the log data in a format export separated able to another application such as a spreadsheet or database Column headers appear only in a new or empty log file otherwise the data appears without headers The information fields that are irrelevant to the scan remain empty Each line always contains a fixed number of fields separated by commas Oc Scan User Manual Setting up the scanner Prior to scanning define certain scanner parameters which stay in the scanner s non volatile memory and remain active until you change them t To set up the scanner parameters 1 From the Scan menu in the Scan window choose Scanner set up 2 Set up your scanner parameters as follows Selected scanner Oc Scan detects the connected scanner This option lets you select the active scanner when there are several scanners installed on the same SCSI port using different SCSI addresses Paper Load option Manual You insert the document and press Paper feed on the scanner to load it Auto The scanner detects and loads the document as soon as you insert it Delay in deci When you use auto load set a time delay to give yourself seconds time to position the document correctly Use fast load The original is pulled only under the first roller axle and scan op
88. r Make sure the scanner has been turned on for at least one hour prior to calibrate From the Scan menu select Calibrate Scanner The Scanner Maintenance software is launched The wizard will guide you through the calibration process Note Fore more information please refer to your scanner installation manual to the Scanner Maintenance instructions leaflet delivered with the Scanner Maintenance software and to the Scanner maintenance user manual Oc Scan User Manual Selecting preferences You can customise certain features in Oc Scan to adapt to your preferred working method such as n Measurement unit inch or millimetre n Colour space RGB or HSV to use in the View and Feature windows n Scanning preferences n Prescanning preferences n Batch scanning preferences t To choose the measurement unit 1 From the File menu select Preferences 2 Select Unit A dialog box appears 3 Choose millimetres or inches t To choose the colour space 1 From the File menu select Preferences 2 Select Colour info field A dialog box appears 3 Choose RGB or HSV Scanning preferences t To choose scanning preferences 1 From the File menu select Preferences 2 Select Scanning A dialog box appears 3 From the General tab select your preferences as follows n Display during scanning Detailed view displays the detail
89. r the computer n Use the View and Feature functions with previously scanned images In demo mode you cannot n Scan n Save to file from the View window s File menu n Print Introduction 13 Oc Scan main window 14 When you start Oc Scan the following window appears Oce Scan CS4026 SCSI File Scan Image Feature Help lei Es HER ox Z Scan Setup Adjustments Color ubin ait alh l Zhen Brightness E 4 Contrast fi E C Lightness Saturation Balance o Gamma fi al Soften Off Sharpen CORNE Ce 0 1 Oc Scan main window Oc Scan User Manual Scanning to file Oc Scan windows In Oc Scan the default main window is the Scan window To navigate between windows click on the windows corresponding tab at the bottom left of the screen 2 Oc Scan window tabs Scan window main window lets you perform all scanning operations including the selection of scanning parameters and preferences View window allows you to display different image types while using various image manipulation functions such as zooming cropping and colour adjustments Feature LUT window enables you to reduce and classify the colours of a true colour input image and to create a filter which you can download to the scanner for subsequent use on a similar class of images Access user docume
90. r type Device Best Cluster Dither Pattern Dither Scatter Dither CMYK Contex RIP n Control language None HP PJL n Margins TIFF gp4 printer n Format TIFF gp4 n Control language None n Margins Xerox Xerox Versatec printer n Format Xerox n Format options n Bytes line Defaults to 1320 n Resolution 100 200 300 or 400 dpi Defaults to 300 dpi n Render type Device Best Cluster Dither Pattern Dither Scatter Dither CMYK Contex RIP n Control language None XEROX PJL n Margins Processing image files 93 Creating a customised printer profile 94 Aa M DW 11 BR ND You have the possibility of creating up to 10 customised profiles to meet your printing needs To create a printer profile With the image open in the View window click the Print button A dialog box appears with the name of the default printer In the Name box select the printer if different from the default printer Under Comment select Use direct printing To create a printer profile In the Printer profile box select the profile on which you want to base your new profile Click the adjacent Properties button to enter a set up dialog box From the Printer specific tab in the Printer language box select the format Click the adjacent Properties button to enter additional settings related to the format In the Control box select the control
91. ram For example when an image has a large white background the histogram shows a very high peak but hardly anything visible for other colours with fewer numbers of pixels This option accounts for these differences by recalculating the histogram values thus making single colours with large pixel numbers appear less dominating than in the histogram Keep colour balance This option retains the original colour balance of the red green and blue channels as you modify the black and white points For example if an image appears too blue you can deselect this option and adjust the blue channel separately without affecting the red and green channels This option is active by default when the luminance histogram displays Oc Scan User Manual Luminance or RGB These options display a histogram based on either RGB or lightness values The initial histogram displays the original black and white points You can set new black and white points automatically or manually To pick the points automatically Click Auto The software calculates the darkest and lightest values in the image according to the current histogram RGB or Luminance Click OK to accept the values and exit the dialog box To set a value for the points In the Red Green and Blue boxes set the values for each point Note If you have selected Keep colour balance the RGB values for each point wil
92. review Note To preview the scan click Forward instead of Scan Select a file name and destination folder Click Save The scanner makes an investigative scan It computes the threshold value based on the algorithmic analysis of the image s greytone distribution The histogram does not appear on the screen The document returns to the start position and scanning proceeds using the computed threshold value To set the manual histogram In the Adjustments tab select Histogram manual Click Forward to prescan The software computes an initial threshold value based on an algorithmic analysis of the histogram Click on different areas in the overview panel to see the threshold effects on image details Click OK if you accept the proposed value To change the value click the threshold slider and drag it to a new value If you don t want to modify the threshold value click Cancel to exit the Histogram dialog box Press Stop and then Forward to reset the histogram and change the threshold When you are satisfied with the results click OK to start scanning using the selected value Oc Scan User Manual Despeckling and hole filling kwWDN ou When you scan in black and white you have the option of cleaning small black spots from a white background or filling small white holes in a black solid Despeckling removes black spots that are
93. rness method colour distance selected when you defined your LUT setup parameters Note The total number of active LUT output colours cannot become greater than 255 by using the explode colour function Start Feature extraction 117 Import new colours 118 BR ND When editing a LUT filter you can create then add a colour or import new colours from a palette file into your LUT output colours To import a customised colour From the Feature menu select Import colour s A dialog box appears Move the slider to define the RGB values of the new colour you want to add either in the RGB or HSV colour spaces The new colour appears on the left Click Add to list for each new colour that you define Click OK The new colour becomes part of the LUT output colours in the histogram and colour wheel To edit the list of new colours Mark the colour that you want to edit Click Remove from list or Replace to remove or replace an imported colour To import a colour from a palette From the Feature menu select Import colour s A dialog box appears Click From palette to display a browser Select a palette file to open type lut pcx tif or pal Click on the colours that you want to import You can also make a multiple selection of colours by drawing a rectangle around an area of the palette with your mouse This method selects all colours found wi
94. s 20 To choose prescanning preferences From the File menu select Preferences Select Scanning A dialog box appears From the Prescan tab select your preferences as follows Prescan mode option Single pass The prescan stops at the end of the document Continuous The prescan continues back and forth until you press Halt gt Index Prescan resolution for colour scanners selects the resolution to use during prescans in the indexed mode Histogram prescan resolution selects the resolution to use during histogram prescans Oc Scan User Manual Alignment detection scan length specifies how far to scan in order to find a line usable for automatic alignments Paper size detection scan length specifies how far to scan in order to find indications of the original s edges and paper size Starting to scan 21 Batch scanning preferences 22 You can log information pertaining to each batch scanned and each file scanned in a batch To choose batch scanning preferences From the File menu select Preferences Select Scanning dialog box appears From the Batch scan tab select your preferences as follows Log for each batch option Image format scan mode resolution scan adjustments Log for each scan option File name file size paper size hollerith code Log format option Verbose This o
95. s of performing the operation Figures and tables Figures and tables are titled and numbered sequentially throughout this manual Figures include pictures of product components screen dumps examples and diagrams of concepts discussed in the description Attention getters There are several types of information to which we draw your attention This information is classified as follows Note Jn a Note information is given about matters which ensure the proper functioning of the machine or application but useful advice concerning its operation may also be given Attention The information that follows Attention is given to avoid damage to your copy or original the copier or printer data files etc a re Caution The information that follows Caution is given to prevent you suffering personal injury Oc Scan User Manual User survey Did you find this manual to be accurate o Yes o No Were you able to operate the product after reading this manual o Yes o No Does this manual provide adequate background information o Yes o No Is the format of this manual convenient in size easy to read and layed out well o Yes o No Did you find the information you were looking for o Always o Most of the times o Sometimes o Notatall How did you find the information you were looking for o Table of contents o Index o Neither Are you satisfied with this manual o Yes o No Thank you
96. s of the image during the scan Overview displays the entire image during the scan Note Deselect one of the options if you want to speed up the scanning process Starting to scan 19 Default scan file when you save to file option None lets you enter a new name for each scanned document Last scan file lets you reuse the same name as the previously scanned document This can be useful when you make multi ple test scans of the same image Paper position option Side You load the document right aligned Centered You load the document centre aligned Scanner speed Use the slider to adjust the speed of your scanner Sometimes the performance of your workstation causes the scanner to make repeated back ups during scanning in order to ensure correct and continuous processing of scanned data Reduce the scanner speed to avoid these back ups Colorspace When you calibrate the scanner profiles for both NTSC and sRGB are created Selection of a color space in this section determines the color profile you want to use while scanning and working with Oc Scan Note The NSTC colour space has a slightly larger color gamut than sRGB n NSTC Color matching between different devices scanner printer monitor requires color matching via the processing of ICC profiles n SRGB It is not necessary to perform Color matching as long as the used devices are also set to SRGB standard Prescanning preference
97. save It Oc Scan User Manual Scan to Net This feature allows to scan from a single workstation and have the image saved to another computer connected to the same network This is based upon a Client Server solution n the SCANserver is the computer workstation connected with the scanner and hosting the scanning software n The SCANclients are the computers on the same network that can receive the scanned images Installation is made during the installation of Oc Scanner Agent Please refer to the Scanner Maintenance Kit user manual for more details t To scan to Net 1 Place your original document face down along the insertion slot on the scanner 2 From the Scan menu select Scan to Net 3 Select a client from the list Note The client may be password protected Enter the clients password to gain access 4 Press the Scan button 5 In the Scan to Net dialog enter a file name The system will otherwise automatically create a file name based on the current date time Files cannot be overwritten on the client Ifa file of the same name already exists on the client the system will create a new name 6 Select a format for your file Formats can be adjusted through the Options button 7 Press OK to start the scan to net process 8 If the client machine has been set up with scan to net authentication you will be asked to enter the password for the client Enter the password and select OK A progress dialog wi
98. sent zoom level n The local viewboards display selected parts of the image which you can reposition or modify as needed When you leave a viewboard this partial view of the image remains stored t To define a local viewboard at 1 In the main view of the image click the Selection button to define an area that you want for a viewboard mjela 2 Click a local viewboard button 1 2 3 to save the selected area to that viewboard 3 To return to the initial view of the image click the main viewboard button on the toolbar Start Feature extraction 111 View the output colours in the colour wheel 112 The colour wheel shows the position of the LUT colours in the image that use the hue saturation value lightness or HSV colour space This option is available only in the LUT editing mode To access the colour wheel view tJ Click the colour wheel button on the LUT toolbar to get the following representations of the output colours n Hexagon on page 112 n RGB cube on page 112 n Inverted triangle on page 113 Hexagon The hexagon on the right represents the hue and saturation of the LUT colours n The periphery of the hexagon gives all the possible hues in the colour spectrum n The position of the LUT colour discs denotes their level of saturation The more it approaches the center of the hexagon the less saturated the colour Inversely the more it approaches the edges of the hexago
99. set up tab select your scan preset From the Mode drop down list select B W Adaptive Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Adaptive adjustments page 66 n Despeckling and hole filling page 65 Click Scan when you are satisfied with the results Black and white Copy Normal 56 ah ND Dual 2D Adaptive enhancement with ADL error diffusion halftoning and 2D Auto edge enhancement and 2D Adaptive background suppression This mode is suitable for copying scan and print of normal drawings with a reasonably good quality Halftones are distributed throughout the image for softer transitions between black and white To scan in B W Copy Normal mode In the Scan set up tab select your scan preset From the Mode drop down list select B W Copy Normal Select the resolution and paper size Click Forward to prescan In the Adjustments tab make the following settings n Adaptive adjustments page 66 n Sharpen soften filter page 74 n Blur filter page 69 Click Scan when you are satisfied with the results Oc Scan User Manual Black and white copy photo mode Oo BR NN This halftoning mode uses Dual 2D Adaptive enhancement with ADL area diffusion logic error diffusion halftoning This mode is suitable for copying scan an
100. sets 34 to file 42 to Net 47 to print 45 to viewer 46 toolbar 26 Scan window 15 Scanner selected 23 setup 23 units 30 Scanning preferences 19 Sharpen and soften filter 74 T Threshold 64 TIFF and JPEG setup 95 Toolbar scan 26 V Vertical precision 23 View image details prescan 37 View window 15 Viewboards 111 Index W Windows in Oc Scan 26 Z Zoom functions 80 143
101. speed A value of 0 gives a file size approximately 3 times larger than a value of 1 A median value of 4 gives a reasonable resolution for most purposes while higher values tend to roughen the edges and make the text unreadable Speckle A range of 0 to 15 sets the sides in pixels of a square filter to remove smudges during scanning or converting You should normally set this value equal to or less than the error value Larger values can remove significant details from the image Layer A range of 0 to 99 sets the layer number in the CAD system to which the DxfTR or DxbTR file will import Unit I or M sets the scale of the scanned or converted file to either inches or millimetres This setting should correspond to the units used in your CAD system Greyscale formats The grey tones are maintained when you convert files between the various greyscale formats When you convert a greyscale format to a line mode format specify a threshold value between 0 and 255 in the Special option in the Scan window or from the File menu in the View window Preferences File Greyscale formats produce large size files For example an E size image scanned at 300 dpi results in a 150 Mb file Name Type Application Description Tif Tif uncompressed 8 bit grey level version Tif Tif packbit compressed 8 bit grey level version Tif Tif LZW Lempel Ziw Welch compressed grey level widely compatibl
102. systems t To install Oc Scan Start Windows 2000 XP or Server 2003 Insert the Oc Scan CD in the CD rom drive From the Windows Start menu choose Run Type D setup in the command line Note Replace D with the letter of you CD rom drive 5 Click OK 6 Follow the instructions from the installation wizard Note During installation you are prompted to enter your serial number This number is located on a sticker on the Oc Scan CD jewelbox BR ND Software upgrade See the Readme htm on the Oc Scan CD for up to date information about software version upgrading procedures 12 Oc Scan User Manual Start Oc Scan Before you work with Oc Scan check that you have B installed Oc Scanner Agent and Scanner Maintenance software Please refer to the Scanner Maintenance user manual for more details performed the scanner maintenance as described in your scanner installation manual switched on your scanner before you switch on the computer This allows the computer to detect the scanner connection 5 B t To start Oc Scan 1 From the Windows Start menu select Programs Oc Scan 2 Choose Oc Scan Use Oc Scan in Demo mode When you start the software without a connection to a scanner or before you turn on the scanner Oc Scan runs in demo mode which allows you to n Rescan the SCSI bus if you turned on the scanner afte
103. ted positives To invert colours In the Scan set up tab select your settings such as scanning mode resolution and paper size Click the Invert button on the Scan toolbar Click Forward to start a prescan You can see the inverted effects of the image on screen In the Adjustments tab make the necessary settings Click Scan when you are satisfied with the results Click Stop if you want to cancel the operation and restart a prescan Scanning tasks 39 Note Inversion is a toggle function that you can turn off at any time However it must be on in order to invert the image when you scan to file Aligning an image during prescan 40 When you do not insert a document horizontally into the scanner the scanned image can be skewed You can deskew the image electronically by rotating it along a horizontal axis Oc Scan can realign the image by selecting an alignment reference in the original image To set an automatic alignment Click the Align button Click Forward to start a prescan An alignment line appears on the screen The alignment angle shows in the status bar at the bottom of the screen To exit the alignment function click the Align button a toggle function You can manually modify the alignment reference line for best results by using your mouse as follows To lengthen shorten or tilt the line Move the cursor over the line s hand
104. tensifies or smoothes the edges in an image Use this filter in conjunction with the blur filter to improve the overall quality of the scanned image by diminishing noise and enhancing image details This feature is available on selected scanner models and configurations To sharpen or soften edges In the Adjustments tab select Sharpen soften In the adjacent box enter a value to set the degree of sharpening or softening as follows n Positive values sharpen edges n Negative values soften edges Click Forward to prescan Adjust the filter value for best results After each change a new prescan shows the effects in the image details Oc Scan User Manual Histogram A histogram is a bar graph that represents the statistical distribution of greytones in an image Each column represents the number of pixels at a particular grey level In most cases you see a histogram with two peaks n The first and higher peak represents the background information the lightest grey tones in the scanned original n The second and shorter peak represents the line information the darkest grey tones in the scanned original n Sometimes there is a third peak at a high greytone level This occurs when the scanner s camera has captured its own white reference background You can prevent this by narrowing the scanwidth to the width of the original Normally the histogram is based on a linear calculation using the t
105. tes the image 90 to the right 42 Rotate left This function rotates the image 90 to the left Rotate 180 This function rotates the image 180 Flip This function rotates the image upside down Deactivate Deactivates the current function and restores the standard cursor 2 From the File menu select Save or Save as to save the modification Processing image files 83 Editing the image Counting the number of colours in an image on page 84 Getting the colour value of a pixel on page 84 Adjusting image brightness and contrast on page 85 Adjusting the image hue saturation and value lightness on page 85 Adjusting the image RGB values on page 86 Converting a colour image to greyscale on page 86 Converting an image to classified colour on page 87 Decreasing colours and greytones in an image on page 87 Despeckling a scanned image on page 88 Inverting the image colours on page 88 Stretching the histogram on page 89 Counting the number of colours in an image This function displays the number of distinct colours that are present in the active image t To count colours 1 From the Image menu select Count colours 2 A message box appears with the number of colours or greytones used in the image viewboard or selected partial view 3 Click Cancel to remove the message box Getting the colour value of a p
106. the format In the Control box select the control language Define the margins if applicable Select the print resolution From the Page set up tab select the paper size and orientation Click OK Oc Scan User Manual t To make copy settings 1 Inthe Print range box you can choose n All to print the entire image default n Selection to print a selected portion of the image that you have defined with the Selection button 2 In the Copies box select the number of copies to print between and 999 3 In the Scaling box select a scaling option n Auto scales the image according to the selected page settings and printer profile n Manual lets you scale the image between 1 and 1000 default 4 Select Offset if you want to cut off part of the image in order to compensate for the top and left printer margins 5 Click OK to start printing Printing image files in batches You can print multiple image files of the same format in a batch t To print in batches 1 From the File menu select Batch Print A browser appears 2 Select the files to print Use the lt shift gt or lt ctrl gt key to make multiple selections Note Selected files must have the same format 3 Select the Suppress error messages option to disable error messages during printing 4 Click Print The Print dialog box appears 5 Make your print
107. ther in the main view or in the viewboards To switch between the RGB and LUT applied views Click the RGB LUT button on the toolbar Alternatively you can right click the image to switch from the RGB and LUT views of the image Zoom in the image 110 There are several zoom functions that you can use in Oc Scan Zoom in allows you to select an area to view You can select several zoom areas successively until you turn off this mode by clicking the icon once again You can get a zoom factor of up to 16 1 Zoom out takes the view out to 2 1 with the pivot point positioned in the middle of the screen This mode turns itself off Da Zoom bird s eye displays a full view of the image with a frame outlining the current zoom area You can click and drag the selected area to another location on the image Oc Scan User Manual Zoom grid is a toggle function that superimposes a one pixel wide gray grid for visual separation of pixels when the zoom factor is 8 1 or greater Use the viewboards to edit the LUT filter There are two available ways of viewing an image through the main view or the viewboards A new image always opens in the main viewboard Local viewboards let you select three possible views of the same image The image manipulation and LUT editing tools remain the same for any viewboard that you choose n The main viewboard displays the image on the screen at the pre
108. thin this area The index values shown are valid for the last selected colour Note You can deselect a colour to import by clicking again on the colour Click OK The new colours now become part of the LUT output colours The total number of colours cannot exceed 255 Oc Scan User Manual Insert a new colour When you compress a true colour image into a LUT filtered output image you naturally lose a great number of colours However you can insert new colours that are created based on the existing colours in the original RGB image This function can improve the colour quality in the output image without greatly increasing the number of colours and the file size You can either insert the new LUT output colour from a single pixel or from an average of colour pixels in the true colour image t To insert a new colour 1 Go the main view of the image or one of the viewboards 2 Click the RGB LUT button to switch the image to true colour RGB 3 Ifnecessary zoom in on the colour pixel that you want to insert 4 Click the Insert new pick colour button 5 To insert an average of colour pixels click and drag the cursor to draw a rectangle covering the area of pixels with the colour that you want The average of the colour pixels in this area becomes the new picked colour which shows up in the colour indicator box on the toolbar 6 Alternatively you can double click on the individual colour pixel to select it as
109. ting the CALS Gp4 orientation 132 Appendix B Miscellaneous How to read this manual 136 User survey 137 Addresses of local Oc organizations 139 Index 141 Table of Contents Oc Scan User Manual Oc Scan User Manual Chapter 1 Introduction n Features on page 10 a Scanning modes on page 10 Operating modes on page 11 Introduction The Oc Scan software is a program that enables you to scan to file and to process images It works in conjunction with n The Oc CS4xxx scanners Features n Colour feature extraction to maintain high quality scans with minimal file size and storage requirements n Ability to zoom in and view scanned images n A complete set of colour and image processing tools n Conversion between file formats n Color management support with ICC profiles for TIFF and JPEG file formats n Alignment horizontal deskewing image rotation electronic despeckling and image mirroring n Angle and distance measurements between selected points n Adjustable scaling and automatic scaling n Autosize with new options Snap to known size Image size or Paper size detection n Print to inkjet and laser printers n Scan to pdf n Scan to Net n Now works as a TWAIN driver giving a familiar interface directly to applications supporting TWAIN acquisition n Support of a wide range of standard industry image file formats including TIFF JPEG JPEG 2000 CALS CCITT Group
110. tion ning will start from there Camera alignment To perform camera alignment please refer to your scanner s installation manual Starting to scan 23 Scanner media offsets Correction Factor in scanning direction This option allows you to tune the scanner s vertical precision setting During scanning an original image is digitized as it is propelled through the scanner One at a time thin strips of the image are processed as they pass the cameras Vertical precision is directly affected by the speed in which this happens Inaccurate vertical precision results in vertical lines in the scanned image that are longer or shorter than the same lines in the original You can modify the vertical precision from zero to a value between 1 and 1 Positive settings mean that the distance between scan lines will be increased and negative settings mean that distance will be decreased Media Offsets in The Top start Bottom end Side offset edit fields define the scanning field offsets You can use this option to correct slight offset irregularities Note Offset values are defined in inches or mm depending on your Preferences System Unit settings Offsets can be positive or negative n A positive offset value in the Side field means that the scanning field s side point is moved to the right and a negative value means it is moved to the left n A positive value in the Top or Bottom fields means that the scanning field
111. tput file format Oc Scan User Manual Plot print file formats Name Pcl Pli Ver Ltx Crf Jdl Atl Con Scm Rtl Gra Generic Cals Type Application Description Format for Hewlett Packard LaserJet compatible laser printers File format for electrostatic thermal and ink jet plotters using an HPGL controller Note When you connecting to an HPGL plotter check that the hard ware flow control over the parallel or serial port is implemented ac cording to the manufacturer specifications This ensures that the computer does not transmit data faster than the plotter can process CADMate electrostatic large format plotter raster output file format The VersaTec data format is also available VersaTec Inc Roland Inc LTX420L LTX420 LTX320L and LTX320 321 ther mal large format plotter raster output file format CalComp Inc DrawingMaster thermal large format plotter raster output file format Japan Digital Laboratory Inc Express Plotter output file format Atlantek Inc 24 inch thermal plotter raster output file format Contex Hybrid thermal plotter raster output file format SCANmate electrostatic large format plotter raster output file format System Partner Gmbh Hewlett Packard Raster Transfer Language supported on the HP7600 HP DesignJet Oc Graphics thermal plotters and NovaJet plotters GraphTek thermal plotter raster output file format CALS type 1 format widely supported by most plotters A Supporte
112. uce the file size of the scanned image without losing its essential features Start Feature extraction 101 Extract features with insert and import tools 102 One of the techniques of feature extraction is to use the colour insert and import tools This technique is based on the few initial colours method which results in a greater number of LUT output colours than at the start The insert and import tools add colours to enhance the features in the image Below is an example of a CAD technical drawing scanned in true colour RGB mode The red lines represent one feature and the green lines represent another feature Even with only two colours the edge pixels are distorted with superfluous shades of green and blue 5 Generate a preliminary LUT with one colour In this example the preliminary LUT generates only one colour as the specified number of output colours This colour is based on its dominance in the image In this case you select a whitish colour that dominates the light background and the red and green features in the image Oc Scan User Manual The objective is to insert colours to which pixels will automatically remap To do this use the input colour pixels in order to create a LUT output colour 6 Insert a red and green into the LUT output colours To insert additional colours Zoom in the image to get a clear view of individual pixels see Zoom in the image on page 110 Click the
113. up requirements for imported image files n If you are scanning an image for archiving or post processing the TIFF format is a good choice because it is widely used and compatible with the majority of computer applications n In colour mode the JPEG format gives good compression though with some loss of detail Oc Scan User Manual Scanning in batches a M OD You can scan similar types of documents that use the same mode and settings in a batch to save time Make your settings once then use the same settings to scan an entire batch of documents To scan in batches Group similar types of documents in a batch Select one original that is representative of the batch From the Scan set up tab choose the scan preset if applicable the mode the resolution and the paper size Click Forward to make a prescan of this original From the Adjustments tab adjust the applicable settings until you are satisfied with the results From the Scan menu select Batch scan Click Scan A dialog box appears with batch scan settings Select the batch scan settings Click OK Insert the documents one by one into the scanner Tip To speed up the loading process select the Autoload option File menu Preferences Scanning The software gives automatic file names to documents scanned in a batch To give automatic file names In Auto file nami
114. y level or 24 bit colour level versions n LZW Lempel Ziw Welch compressed grey level or colour versions 4 Choose the byte order depending on the application in which you will be using your scan n Intel n Motorola 5 Specify rows per strip or tile size depending on the application in which you will be using your scan n Rows per strip a Tile width and length JPEG set up JPEG Joint Photographic Experts Group is a compression method for full colour and greyscale images It is a format best suited for scanned photographic images It is not recommended to convert a black and white image to JPEG because this will result in a poor quality greyscale image with a large file size JPEG is called a lossy compression method which means that after decompression the output image may not be identical to the input image due to loss of information However in typical photographic images you can obtain very good compression levels without much visible change You can also compress the file to a high degree if you accept a lower quality image The quality settings in the JPEG set up allow you to make the compromise between image quality and file size Processing image files 95 To define the JPEG set up parameters From the File menu select Save as A dialog box appears Note You also get the same dialog box before you scan a document to file In the File type box select JPEG Click

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