G-302 Dual Projector Edge Blender Quick User Guide
Contents
1. location fine tune is required to let the images from both projectors with the right locations and same size To let all grids in overlap area perfectly be aligned together will ensure the best geometry adjustment result Note if the screen is not flat enough then it will have some dis alignment in non flat area and may cause blurred image For curve edge blending G 104 model is recommended to get best result 4 Set pixel number for Edge Blending a Pixel number in edge blending is calculated based on the grids number in overlap region b Each grid pattern represents 50x50 pixels in size when G 302 output resolution is full HD The total overlap is 50 pixel x 10 grid 500 pixels if two images are with 10 grid overlap If the output resolution is XGA then the overlap region represents 500 1920x1024 267 pixels c This overlap number should be applied in the Edge Blending in below procedures 5 Extend the image for two projectors a After set correct Edge Blending pixel number G 302 will automatically calculate the image cropping area for each projector b To activate Extend OSD menu will split the input image crop the right image area and assign to each projector to finish the complete Edge Blending procedures 6 Image fine tune After the above procedures user has already finished edge blending procedures If viewer still sees obvious banding effect in overlap region Further image fine tune is required B Geometry adjustme2. transition area To adjust installation position of the projector i Increase Overlap region ii gt Reduce off axis angle iii gt Let two image border at overlap region before vertical lines before GeoBox geometry adjustment To change Display Mode and try different color settings Toimplement 3D color adjustment 3 To use lower gain value screen to reduce the view difference in different view angle Technical support Please check more technical information in www vnstw com website 1 G 104 Curve Edge Blending Quick User Manual
3. G 302 Quick User Manual Document G 302101 G 302 Dual Projector Edge Blender Quick User Guide Outlook and Functions IR Extender IR Receiver OSD Menu Grid Pattern CH A B switch Profile CH A B Switch converter RH LH Identi CT Te e ae SD anal ultiplex Se ony we j Geometry hot keys Warp amp 4 Corner System S Se OSD Keypad a l Information Audio out PC Audio in Input source Output Resolution 3D format selection Reserved key RH LH channel swap 2D to 3D HDMI out DVI in HDMI in VGAin HDMI out RH CH Or HDMI LH CH Procedures for 2 projector edge blendin System configuration To use the same projectors and install with the O El ee same settings Disable auto keystone and set Pa a color in standard or SRGB display mode to reduce the possible banding in overlap region 2 To project the image to the screen with the image edge in the overlap area vertically If necessary to use keystone correction function to get vertical lines It will help the final video quality after edge blending ab ait a Se arizer Polarizer forleft eye for nght eye PC G 302 only can do flat screen edge blending with two projectors If more projector edge blending is required G 502 should be used For curved screen edge blending G 104 should be applied Dual projector flat screen edge blending A Procedures and key points 1 Reasonable overlap region is required In XGA projecto
4. H B Edge Blending area in CH A is at LH side therefore Left Edge for CH A RH channel shall be selected and set edge blending pixel value at 373 based on the previous calculation Press CH A B to switch to CH B Select Right Edge and set edge blending value at the same value as CH A at 373 Ne Activate Extend under Edge Blend OSD menu Press OK to enter this menu and Enable extend function The image will automatically edge blend together as show below G 302 Quick User Manual Document G 302101 ae SII O msm O A DENES SEEN TT SORES oes semmim in E To fine tune Overlap value under Edge Blend menu 1 Overlap value will be automatically created while the Edge Blend value is set to G 302 under the condition that no any other Overlap value has been input to GeoBox before set Edge Blend value If double image or blurred image appears in overlap area as showed in left figure it means the setting in Edge Blend or Overlap value is not correct Further adjustment is required 2 Possible reasons that the Overlap value is not correct a GeoBox didn t execute Reset procedures and some old Overlap value is set in GeoBox b The Edge Blend value calculation and setting is wrong After automatically calculation it gets wrong Overlap value c User had kept value in Overlap In this case GeoBox will not automatically crea
5. ending image G 302 Quick User Manual Document G 302101 C Set pixels number for edge blending Press Exit key in remote controller or Menu key on front panel to disable grid pattern then press CH A B key to disable grid pattern in another channel If grid pattern still exists then press Exit to disable it After disable grid pattern the images from two projectors will show at the same time with some overlap The grid in left figure comes from signal source but not from internal grid pattern 1 Inthe above example the overlap region is 14 grids calculated from internal grid pattern but not video source Each grid pattern represents 50x50 pixels in size under the condition that the output resolution of G 302 is set at 1920x1080 output resolution 2 The total overlap is 50 pixel x 14 grid 700 pixels in above example 3 Ifthe output resolution is XGA then the overlap region represents 700 1920x1024 373 3 pixels 4 This overlap number should be applied in the Edge Blending in below procedures The native resolution of the projector in the example is XGA and the output resolution of G 302 is also set at XGA to get the best video performance Therefore 373 pixels edge blending shall be applied Seewmi ae O OWENA L I1 1 1 TT Chonpe cdge senang settings D To extend the image into two projectors Activate Edge Blend OSD menu under Anyplace in CH A user can also select C
6. nt step by step 1 Projector installation 1 Connect CH A to RH and CH B to LH projector 2 Install projectors projecting a little over the screen with overlap region of 250 400 pixels 3 Reset GeoBox and set Menu Time Out to O to show OSD amp grid pattern constantly 4 Activate Pattern amp CH A B keys to show different color grid pattern for easy alignment G 302 Quick User Manual Document G 302101 If no input signal is connected the screen will show Power Saving Mode and it will show Blue background when OSD is activated Each grid size is 50x50 pixels in full HD output resolution If GeoBox output resolution is XGA then each grid represent a size of 26 7x26 7 pixels 50 1920x1024 26 666 2 Start 4 Corner adjustment in one channel CH B is firstly selected in below example Sam Hag 1 Activate 4 Corner key in CH B An indicator HHRHH i CHANNEL B will be showed at the bottom right HHHH HH H TT H of the OSD HHTH tooo li 2 Select one corner and press OK to start 4 corner FEH adjustment in CH B orga Sree 1 A green Mark at the corner Top Left to show the corner to be adjusted 2 Using OSD direction keys to move the corner position into screen border HEH roo noua HHHH HH COC EHE i i FEE CO rn ss Limitation in adjustment range The adjustment range in the corner will be varied in different output resolution from GeoBo
7. r we recommend to overlap at least 250 pixels for easy quality fine tune It means the overlap region is about 13 9 in the complete image 250 1024 2 250 13 9 In the case of full HD projector the overlap region is about 400 600 pixel 11 6 18 5 2 The images from two projectors must have the same grid size Two ways for final grid adjustment 4 Corner adjustment to let all grids with the same size a To calculate the necessary size of the images from two projectors The image size from two projectors must be the same To put temporary marks on the screen to indicate the final location of the images and align the images to meet the required size G 302 Quick User Manual Document G 302101 b The second way is to mark the center line of the screen and let CH A amp B has the same grids over the center line and let all grids in both CH A amp B be perfectly aligned 3 Geometry alignment a Mark the center points of the screen b Connect CH A output to RH projector and CH B output to LH projector Install projector to project image a little over the screen with recommended overlap area c Reset GeoBox set Menu Time Out to 0 d Activate Pattern menu and use CH A B to switch between CH A amp CH B to show internal grid pattern with different colors e Use CH A B to select one channel for geometry adjustment active 4 Corner to do geometry alignment in the first channel then in the second channel f Image
8. stment 1 If finish the last Corner Bottom Right in CH B and press CH A B to switch to CH A directly OSD menu will show the same position of the last adjusted corner Bottom Right Poress OK key to pop up grid pattern with a Mark at the corner to be adjusted 2 To move the image into screen border and follow the same procedures to adjust all corner at CH A Left figure shows both CH A amp CH B corners had been adjusted to rectangular with some overlap at the center of the image but the grids in CH A amp CH B are not overlapped together The grids at the overlap region are still not aligned together It means the size of the grid in CH A amp CH B may still not be the same In this case it will create burred image in overlap region GI O KA I ER CEE HHFH T Bail HHEH i HHHH Coo tH Coo HHH a HiH Hi ECEARNESSINEMAE RANA NNAEASAE ATAN EHEHEH pocus REUOERORGERGUBEHEE BEERELGE ERE BPEEUSAEES T SSSR eee eee E HHHH IEBREREZEGLAENANSSN SEASSA HHHH e A a Sa e e eT i SUUUUUEEEEEUIGERRR GRBGEE EEEH i _ eh n HH ABI HH ERRBOPERRRDENARDRE DRRRADRRARNE AANI 1 Continuously fine tune 4 corners in the overlap region from CH A amp CH B to let the grids in two projectors be perfectly aligned as showed in left 2 Note once the grid sizes in two projectors are the same size with the horizontal lines aligned together it is still possible to show good edge bl
9. te new value 3 How to fix it a If the image is just a little blurred in overlap area try to increase or decrease small step of Overlap value in both CH A amp CH B shall make the image clearer In this case it is unnecessary to recalculate Edge Blend value again b Check the accuracy in Edge Blend value calculation Make sure that different output resolution setting in G 302 will have different values although it show the same number of overlap grid pattern c Activate Overlap OSD under Edge Blend menu and check the value settings in both CH A amp CH B then increase or decrease the value to see which direction will reduce the difference in double image To activate Overlap menu under Edge Blend and re adjust the Overlap value will let the image align together as normal image G 302 Quick User Manual Document G 302101 F Fine tune overall Edge Blending performance The final performance will be a combination of many factors projector characteristics projector setting screen ambient light GeoBox setting The follows are the functions that should be tried during the final fine tune stage 1 GeoBox Edge Blending Gamma Shift Offset Gain Image Properties To select Preset Mode to sRGB or Bluish 2 Projector To use projectors with higher contrast ratio will reduce the light leakage in overlap region This light leakage can only be compensated by adjusting the black level in non
10. x For output resolution under 1400x1050 the range will be 256 pixels in horizontal and 200 in vertical direction For XGA resolution the adjustment range is about 9 5 grids in horizontal and 7 5 grids in vertical directions At full HD output the range will be 200 4 grids in horizontal and 100 pixels 2 grids in vertical directions 1 Press OK key will activate 4 Corner menu again 2 Select next image corner to be adjusted Bottom Left is selected in left figure 3 A green Mark is showed at the corner to be adjusted HH HH I HH i HHHH H 1 To move Bottom Left corner into the screen po ee COO mail 2 A green Mark in bottom left showed the EEE EETELU a l adjusting result G 302 Quick User Manual tea MA 4 4 HH T a f i b SSRReeSeSeeeeeeee sae LELI cr Gi dana FREE ee TEE EE a ise eat eameresoretens SCSUQHzIET1 ASNES MNs HH 4 Geometry fine tune Document G 302101 Apply the same procedures as above to adjust Top Right and Bottom Right corner of the image and let the image of CH B become rectangular inside the screen borders 1 After finish geometry alignment in CH B press CH A B to switch to CH A OSD menu 2 4 Corner adjustment menu will appear If no 4 Corner menu shows up please press 4 Corner menu again in remote controller 3 Then select the corner and press OK to do corner position adju
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