Christie DS+60 User Manual page 78

Section 3: Operation
Edge Blending
3-54 Christie DS+60 User's Manual
Canceling Brightness Uniformity
If you do not want to use or apply Brightness Uniformity settings, delete the
checkmark from the "Uniformity Enable" checkbox at the top of the Brightness
Uniformity menu.
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Christie Edge Blending is an innovative set of software functions that can quickly and
easily blend whitelevels along the edges of multiple adjacent projected images to
create a single seamless larger image.
What is a Blend?
In simple terms, a blend appears as a gradient strip
along an edge of a projected image. It is darkest along
the extreme edge of the image, and lightens nearer to
the rest of the image (see right).
How Are Blends Used?
In multiple-projector walls, complementary blends
between neighboring images can compensate for the
extra "brightness" or intensity where these edges overlap. By controlling blend width
and other properties, you can achieve uniformity across the group of images. Visible
overlaps will disappear:
For best results, use the same projector model and type throughout your display wall.
In addition, avoid high-gain screens whenever possible—the optical performance of
such screens demands minimal image offset, thus projectors must be located very
close to one another.
Edge blending software controls are located in the 2-page Edge Blending submenu—
access via Configuration menu, then go to the Geometry and Color menu and select
Edge Blending. The More option opens the second page of the Edge Blending
submenu.
Main Functions
Use edge blending controls to set the precise width, shape and midpoint you need to
blend overlapping edges together smoothly.
Blend Width
overlapping edge. Slidebar values represent the number of 8-pixel steps used
for the blend. For example, a setting of "3" creates a blended edge 24 pixels
wide. A setting of "0" signifies no blending. For best results in most
applications, use a blend width of 16-48 steps (128-384 pixels).
Ranges: 0-80 horizontal, 0-60 vertical.
Figure 3.28. Edge Blending Concept
determines how much area is used for blending along an