Digital Projection Projector HIGHlite 660 3D Series User Manual

page 63
Operating Guide
USING THE PROJECTOR
Reduce Black Level Uplift Width (continued)
A detailed view of one of the projectors in a 
two-projector array:
1 Black level uplift region
This image occupies the left half of a 
two-projector array. Black level uplift 
has created artifacts on the edges of 
the blend region.
2 Artifact (left)
This artifact is caused by the 
other projector’s pond of mirrors 
overlapping the black level uplift 
region of this projector. It can be 
eliminated if the black level...

page 64
Operating Guide
USING THE PROJECTOR
Reduce Black Level Uplift Width (continued)
In the Reduce Black Level Uplift 
Width menu, settings correspond 
to coordinates within the unblended 
regions. Only relevant coordinates 
are enabled.
To remove the artifact on the left:
1. Open the Reduce Black Level 
Uplift Width menu of the 
projector on the left.
2. Adjust Upper Right X and 
Lower Right X.
3. Select Apply Uplift. The 
black level uplift region of this 
projector will withdraw from the 
pond of...

page 65
Operating Guide
USING THE PROJECTOR
Blending images from multiple projectors
The following procedure explains how to set up an array of projectors an\
d how to blend the images together.
Before you start
Position the projectors
Ensure that all projectors are in good working order.
Position the projectors so that they are within the required throw dista\
nce range. Position the screen where it will remain during operation.
In the initial stages of the procedure you will be using test patterns, \...

page 66
Operating Guide
USING THE PROJECTOR
Edge Blend procedure
1. Align the projectors as they will be used in the array.
Each projector should be perpendicular to the screen, or as close as pos\
sible. Ideally, each projector should allow for a minimum of 20% 
screen overlap where it is adjoined by other projectors. Overlaps should\
 be the same in size across the array.
How to align the projectors:
• Ideally, all alignment should be achieved by physically moving the projectors a\
nd by using the Lens...

page 67
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
2. Ensure that all projectors are color-matched.
If necessary, use the White Field test pattern and test the light output of each projector. 
Ensure the Color > Gamut setting has the same value across the array.
Use Lamps > Lamp Power to compensate for different lamps. Even identical lamps change their light output with age an\
d use.
3. Enter the correct gamma setting.
Adjust the gamma setting using the Image > Gamma control....

page 68
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
4. Set up the array.
For each projector, open the Edge Blend menu and enter Array Width, Array Height, Array H Position and Array V Position.
Array Width and Array Height should be identical for all projectors. These settings define the size of the array. For example, a two-by-
two array will have the following values:
• Array Width = 2
• Array Height = 2
The top left projector will have Array H Position = 0 and Array V Position...

page 69
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
5. Define blend regions.
From the Edge Blend menu on all projectors, 
set Blending to Align Pattern.
Set up Blend Width on each projector so 
that the align patterns overlap perfectly and 
completely cover the blend regions (Fig. 2).
If necessary, physically move the projectors 
and/or use Lens Shift and Zoom again to 
align the array perfectly
Fig. 2
1 Left projector
2 Align pattern of left projector
The red arrow next to the...

page 70
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
6. Uplift black levels (optional).
If you do not need to uplift the black levels, skip 
to step 8, Blend the images.
Switch all projectors to the Black Field test pattern.
The level of black will differ across the image as 
shown in Fig. 1. Uplift the black levels using Edge 
Blend > Black Level Uplift.
How to uplift black levels
Regions may be overlapped by two or four 
projectors. An array will always contain regions...

page 71
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
7. Adjust uplift edges (optional).
This step is necessary if you 
have uplifted the black levels 
in the previous step.
During the black level uplift 
process, brighter lines appear on 
the edges of the uplifted regions. 
This is due to the inactive area 
around the periphery of the DMD, 
also known as 
pond of mirrors 1.
To remove these edges, use the Edge Blend > Reduce Black 
Level Uplift Width settings for 
each projector...

page 72
Operating Guide
USING THE PROJECTOR
Edge Blend procedure (continued)
8. Blend the images.
Set Edge Blend > Blending to On for 
each projector to activate s-curves in the 
blend regions.
Once blending is activated, use test 
patterns to detect irregularities within the 
blend and to correct them.
What test patterns to use
• Use White Field (recommended) 
and/or Grey H Bars, if you are 
blending horizontally aligned images, 
and Grey V Bars, if the images are 
vertically aligned.
What...