Manual Photonfocus HD1
Contents
1. splitting into odd even image and interpolation missing rows odd rows short exposure Image fusion y Tone mapping calculation for display Vv High dynamic range image Figure 2 1 Example for image fusion and tone mapping 2 2 Available camera models The HD cameras are based on standard Photonfocus cameras and contain all their functionality with the exceptions described in Chapter 3 Please refer to the manual of the standard camera for a description of the standard camera features Table 2 1 lists the available HD camera models with their underlying standard camera HD camera model Based on Refer to manual Interface HD1 D1312 160 CL 12 MV1 D1312 160 CL 12 MAN041 CameraLink HD1 D1312 80 G2 12 MV1 D1312 80 G2 12 MAN049 Gigabit Ethernet Table 2 1 Available Photonfocus HD cameras 2 2 Available camera models 9 2 Product Specification 10 Functionality 3 1 HD mode The HD mode is enabled by setting the property EnOddEven to 1 True A drawing of the data path when EnEven0dd is set to 1 True is shown in Fig B 1 ExposureTime and LinLog parameters are specified for even and for odd rows Some data path parameters Digital0ffset FineGain LUT can also be set for even and odd rows If simultaneous read out mode is used together with even odd HDR mode O En0ddEven 1 True then the brightness of the row where the second expo2. ctive Pixel Sensor APS and global shutter technologies enable high speed and high dynamic range 120 dB applications while avoiding disadvantages like image lag blooming and smear Photonfocus has proven that the image quality of modern CMOS sensors is now appropriate for demanding applications Photonfocus product range is complemented by custom design solutions in the area of camera electronics and CMOS image sensors Photonfocus is ISO 9001 certified All products are produced with the latest techniques in order to ensure the highest degree of quality 1 2 Contact Photonfocus AG Bahnhofplatz 10 CH 8853 Lachen SZ Switzerland Sales Phone 41 55 451 00 00 Email sales photonfocus com Phone 41 55 451 00 00 Email support photonfocus com Table 1 1 Photonfocus Contact 1 3 Sales Offices Photonfocus products are available through an extensive international distribution network and through our key account managers Details of the distributor nearest you and contacts to our key account managers can be found at www photonfocus com 1 4 Further information Photonfocus reserves the right to make changes to its products and documenta C tion without notice Photonfocus products are neither intended nor certified for use in life support systems or in other critical systems The use of Photonfocus products in such applications is prohibited Photonfocus is a trademark and LinLog is a registered trademark of Photo
3. dEvenDelay ExposureTimeOdd Figure 3 2 Even odd exposure timing with EnAutoOddEvenDelay 1 and sequential read out An example with EnAuto0ddEvenDelay 0 False is shown in Fig 3 3 Trigger ExposureTimeEven Exposure Even Exposure Odd Readout lt gt lt gt OddEvenDelay ExposureTimeOdd Figure 3 3 Example of even odd exposure timing with EnAutoOddEvenDelay 0 and sequential read out 3 3 Maximal frame rate If EnEvenOdd is set to 1 True then the maximal frame rate can be calculated by the same formula as in the standard camera replacing the exposure time by the term max ExposureTimeEven OddEvenDelay ExposureTimeOdd 12 3 4 LinLog If EnEven0dd is set to 1 True then all LinLog properties can be set to different values for even and odd rows see Table 3 1 Odd rows Even Rows EnEvenOdd 1 Even Rows EnEvenOdd 0 LinLog Mode LinLogEven Mode LinLog Mode LinLog Value1 LinLogEven Value1 LinLog Value1 LinLog Value2 LinLogEven Value2 LinLog Value2 LinLog Time1 LinLogEven Time1 LinLog Time1 LinLog Time2 LinLogEven Time2 LinLog Time2 Table 3 1 LinLog properties in HD mode GigE dots are replaced by underscores _ CE If EnEven0dd is set to O False then the LinLog values for odd rows are applied to all rows 3 5 Digital Gain and Offset FineGain and DigitalOffset can be set independently for odd and even rows see Tabl
4. e 3 2 Even rows Odd Rows EnEvenOdd 1 Odd Rows EnEvenOdd 0 FineGain FineGainOdd FineGain DigitalGain DigitalGain DigitalGain DigitalOffset DigitalOffsetOdd DigitalOffset Table 3 2 Offset and gain properties in HD mode Footnotes in GigE cameras set to and set property in category Win GigE cameras set to and set property 3 6 Grey Level Transformation LUT If EnEven0dd is set to 1 True then the look up table LUT for the odd rows is set independently of the LUT for even rows LUTO is applied to even rows and LUT1 to odd rows gt The RegionLUT feature of the standard cameras is not available in the HD cam eras Se If EnEvenOdd is set to O False then LUTO is applied to all rows 3 4 LinLog 13 3 Functionality 14 A References All referenced documents can be downloaded from our website at MANO044 User Manual MV1 D1312 IE CameraLink Series Photonfocus MANO49 User Manual MV1 D1312 1E G2 DR1 D1312 IE G2 Gigabit Ethernet Series Photonfocus 15 4 References 16 A Revision History Revision Date Changes
5. nfo amp cus AG CameraLink and GigE Vision are a registered mark of the Automated Imaging Association Product and company names mentioned herein are trade marks or trade names of their respective companies 1 Preface gt Reproduction of this manual in whole or in part by any means is prohibited without prior permission having been obtained from Photonfocus AG c amp Photonfocus can not be held responsible for any technical or typographical er rors 1 5 Legend In this documentation the reader s attention is drawn to the following icons CS Important note lt gt Alerts and additional information A Attention critical warning DI Notification user guide Product Specification 2 1 Introduction The Photonfocus HD camera series allows to set different property values for even and odd image rows for the following properties Exposure time LinLog parameters Look up table LUT e Gain FineGain and DigitalOffset The dynamic range of an image can be increased in most Photonfocus cameras using LinLog without the need of the odd even HD features Below is a comparison of using only LinLog to using the even odd HDR features e With the HDR feature the dynamic range can be increased with linear pixel response which is required by some application LinLog has a non linear pixel response e The dynamic range can be increased even more than just using plain LinLog by using LinLog
6. photon focus User Manual HD1 D1312 1E Series High Dynamic Range CMOS Area Scan Camera MANO57 05 2012 V1 0 All information provided in this manual is believed to be accurate and reliable No responsibility is assumed by Photonfocus AG for its use Photonfocus AG reserves the right to make changes to this information without notice Reproduction of this manual in whole or in part by any means is prohibited without prior permission having been obtained from Photonfocus AG Contents 1 1 About Photonfocusl 22222 222mm nn 1 2 Contact s ocios ecc a a aa a ai a 1 3 Sales Offices ae soa aa an ds de ed GS a a da ee ee 2 1 5 Legend u 2 4 amp ee ca a eke a Da A e a e 2 Product Specification 2 1 Introduction 2 2 2 2 22mm 2 2 Available camera models 22222 2 mm nn 3 Functionality 31 HD Model sp wur wea Gd ee ee ta a ac Sn 3 2 Exposuretime 2 2 2 ee ae O a Ea a EUT A E E 3 3 Maximaltrametatel a 5 Digital Gain and Offset 6 Grey Level Transformation LUT Uy 3 4 References A Revision History CONTENTS CONTENTS Preface 1 1 About Photonfocus The Swiss company Photonfocus is one of the leading specialists in the development of CMOS image sensors and corresponding industrial cameras for machine vision security amp surveillance and automotive markets Photonfocus is dedicated to making the latest generation of CMOS technology commercially available A
7. sure starts and the part of the image below this row is slightly different than the upper part of the image It is therefore recommended to use sequential read out in this case amp Odd and even refer to the absolute row numbering Examples Y 0 H 1024 first row of the ROI is an even row Y 1 H 1024 first row of the ROI is an odd row Sensor Image ExposureTimeEven A LinLogEven e7 ExposureTime LinLog DigitalOffset Image Output 3x3 Convolver DigitalOffsetOdd FineGainOdd mus Even rows m Odd rows Figure 3 1 Data path in HD camera when EnEvenOdd 1 True 11 3 Functionality 3 2 Exposure time If EnEvenOdd is set to 1 True then the exposure time of the even rows is set by the property ExposureTimeEven and the exposure time of the odd rows by the property ExposureTime Exposure of the even rows starts immediately whereas the exposure of the odd rows is started after OddEvenDelay If EnAuto0ddEvenDelay is set to 1 True then OddEvenDelay is automatically set to ExposureTimeEven ExposureTime resulting in the timing shown in Fig 3 2 This minimizes the dark current as the image is read out immediately after exposure If EnEvenOdd is set to O False then the exposure time of all rows is set by the property ExposureTime Ee ExposureTimeEven must not be smaller than ExposureTime Trigger N N C ExposureTimeEven Exposure Even gt E Exposure Odd Readout gt lt Od
8. together with the even odd HDR feature e The vertical resolution is cutted in half by the even odd HDR feature Rows have to be interpolated in software or an anamorphic lens can be used e Computational complexity is higher with the even odd HDR feature An application of this feature is high dynamic range imaging where the exposure time of the even rows is set much higher than the exposure time of the odd rows Through a suitable Tone Mapping algorithm an image with a high dynamic range can be obtained The dynamic range can be increased even more by using Linlog Fig 2 1 shows the result of applying an image fusion and a tone mapping algorithm to the output of a Phtonfocus HD camera The even rows are exposed with a longer exposure time than the odd rows In the upper part a zoom of the image shows that the odd rows are darker due to the lower exposure time In the middle part the even and odd rows are assembled to form an even image and an odd image Missing rows were interpolated to keep the aspect ratio The odd and even images are merged to a single HDR image using a fusion algorithm A tone mapping algorithm is then applied for lower resolution display E In this manual only the HD specific features are described The standard features and technical specifications are described in the manual of the corresponding standard camera see also Table 2 1 2 Product Specification detailed image even rows long exposure
Download Pdf Manuals
Related Search