Christie Roadie HD+35K User Manual page 139

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. It should be noted that the requisite tiling of the image
(with data repeated along internal edges that will overlap) must be correctly handled by your source.
Flat Blends vs. Warped Blends
Flat Blend. It is important to remember that the projector's
standard edge blending controls affect the outer edges of
the projector's display panel, and that each blend is
consistent along its length. The standard
menu controls can blend multiple flat full-panel displays if
they have no keystoning or optional warping applied.
Warped Blends. When using the optional Christie TWIST module for warping images on to curved screens,
work with its separate Christie TWIST PC application to create more specialized blends required. Such a blend
can vary along its length to compensate for curves. Once downloaded to the projector, simply apply the desired
custom "user" blend by selecting it in the Blending Enable drop-down list.
Edge blending software controls are located in the 2-page
Configuration
access via the
option opens the second page of the
Main Functions
Use edge-blending controls to set the precise width, shape and midpoint you need to blend overlapping edges
together smoothly.
• Blend Width determines how much area is used for blending along an 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
• Blend Shape determines the rate of roll-off across the blend width, i.e. how quickly the white levels across
the blend change from light and dark. Increasing the Blend Shape setting accelerates the rate of change at
both extremes so that less of the region appears mid-gray (refer to
Roadie HD+35K User Manual
020-100340-02 Rev. 1 (01-2010)
Figure 3-43 Edge Blending Concept
Edge Blending
Geometry and Color
menu >
Edge Blending
secondary menu.
Requires Christie TWIST
Edge Blending
secondary menu which you can
Edge Blending
menu, and select
Figure 3-44).
Section 3: Operation
More
. The
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