Extron electronics WindoWall Pro Series User Manual page 71

The edges of the projected images overlap by a few pixels. However, to the viewer, the
videowall appears to contain one seamless image, with no indication of where the edges of
the component images are.
NOTE: The WindoWall Pro does not manage the contrast adjustments and brightness
compensation needed to visually blend the image edges so that the overlapped edges
are not brighter than the rest of the image. With the WindoWall Console software, the
processor can manage the video information so that the information in the blended
areas is the same on adjacent projectors.
Figure 43 shows a system in which three projectors produce a display consisting of eight
windows. In this illustration, each cross-hatched area represents the blended area that
two projectors are responsible for displaying. The top diagram shows the projector images
overlapping. Because the images overlap, the video information in the overlap area is
identical on both projectors.
Window 1
Window 2
Projector
Window 1
Window
3
Window 2 Window
4
Projector
Figure 43. Three Projectors Displaying Overlapping Images that Require Edge
Blending
Window 3 Window 5
Window 4 Window 6
Projector
Window 3
Window 5
Window 4
Window 6
Projector
WindoWall Pro Series • Special Application: Edge Blending
Window 7
Window 8
Projector
Window 7
Window
5
Window 8
Window
6
Projector
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