Digital Projection Projector HIGHlite 660 3D Series User Manual

page 53
Operating Guide
USING THE PROJECTOR
Geometr y Engine (continued)
Cornerstone
If Cornerstone is selected from the main Geometr y page, you can use 
the sliders to stretch the image from each of the four corners.
Notes
Main MenuGeometr y Cornerstone
Upper Right X and Upper Right Y correction
   
Digital Projection HIGHlite 660 3D Series 
Rev E Februar y 2015  

page 54
Operating Guide
USING THE PROJECTOR
Edge Blend menu
Over view
When several projectors are used to create a large tiled 
image, the edges need to be blended to avoid the overlaps 
appearing brighter than the rest of the image.
As it is not possible for any projector to produce an 
absolute black, any ‘black’ areas in the overlapped edges 
may appear slightly less dark than those in the rest of the 
image. Black Level Uplift can be used to counteract this 
effect, by raising the black level of the...

page 55
Operating Guide
USING THE PROJECTOR
Array Width and Height
• Set this to the total number of projectors in the array. None of the other 
options are available until one of these two settings is greater than 1. The 
maximum number of projectors is 4 x 4.
Array H Position and V Position
• These two parameters need to be set correctly for each projector in the \
array, so that it can determine which edges are to be blended. Sometimes 
only one edge overlaps, sometimes two, three or four.
Example...

page 56
Operating Guide
USING THE PROJECTOR
S-Cur ve Value
• In the regions where two or more projectors overlap, the brightness of 
the signal is decreased to blend the images. S-Cur ve Value controls the 
steepness of this decrease.
Notes
Main MenuEdge Blend
 This menu is available only when 
Setup > System > Configuration is 
set to 
Edge Blend.
  None of the other items in this menu 
are available until either the 
Array 
Width
 or the Array Height setting 
is greater than 
1.
  For a detailed...

page 57
Operating Guide
USING THE PROJECTOR
S-Cur ve Value (continued)
When images overlap, the area of overlap receives light from all overlap\
ping sources. Without S-Curve, the overlapping edges would be 
brighter than the rest of the image, as shown in Fig. 1.
If two reciprocal s-curves are used to control the amount of light from \
each source in the overlapping region, the total amount of light in the \
region would remain constant, as shown in Fig. 2.
Fig. 1: Overlapping edges without S-Curve...

page 58
Operating Guide
USING THE PROJECTOR
Blending
This setting enables s-curve blending, or displays an align pattern to help define overlaps between 
segments.
Set Blending to:
• Off
Edge Blend is not used.
• On
S-curves are enabled in the 
overlapping regions.
• Align Pattern
The align pattern makes the 
overlaps more visible and helps 
adjust the physical position of the 
projectors in the array.
The size of the align pattern is 
controlled by the Blend Width 
group of settings.
Notes
Main MenuEdge...

page 59
Operating Guide
USING THE PROJECTOR
Segmentation
Segmentation can be used if the same image is fed into each projector.
• If Segmentation is Off, every projector in the array will display the whole image.
• If this setting is On, each projector will display its own segment only.
Set to Off if you have external software that handles segmentation.
Notes
Main MenuEdge Blend
 This menu is available only when 
Setup > System > Configuration is 
set to 
Edge Blend.
  None of the other items in this...

page 60
Operating Guide
USING THE PROJECTOR
Segmentation (continued)
An example array:
1 Image source
DVD player, Blu-ray, computer, etc.
2 Distribution Amplifier
Sends the source image to all projectors in the array.
3 Array (Segmentation is on)
Each projector displays a segment.
Notes
Main Menu
Edge Blend
 For a detailed step-by-step 
description of the edge blend 
process, see Blending images 
from multiple projectors  further in 
this section.
231
   
Digital Projection HIGHlite 660 3D Series 
Rev E...

page 61
Operating Guide
USING THE PROJECTOR
Blend Width
Use this to set the width of the blended regions.
1 Top Blend Region
2 Bottom Blend Region
3 Left Blend Region
4 Right Blend Region
Black Level Uplift
Overlapping edges may appear lighter than the rest 
of the image. Counteract this effect by raising black 
levels in the rest of the image. The amount of uplift 
required will be either x2 or x4, depending on how 
many images are overlapped.
The following example shows a segment with 
overlapping...

page 62
Operating Guide
USING THE PROJECTOR
Reduce Black Level Uplift Width
Use this to correct for stray light from the pond of mirrors, the DMD’s inactive outermost mirrors.
In the example below, the blended image comes from two projectors, 1 and 2. Both images 
have black level uplift applied in their unblended regions; as a result,\
 artifacts 3 and 4 have 
emerged at the edges where the black level uplift region of one projecto\
r overlaps the pond of mirrors 
of the other.
To remove the artifacts,...