Christie CineIPM-2K, User Manual

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OPERATION
3-58 Cine-IPM 2K User’s Manual
020-100164-01 Rev. 1 (01/08)
WARPED BLENDS:
When using the optional ChristieTWIST module for warping
images on to curved screens, work with its separate ChristieTWIST 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 pull-down list.
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
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 (see Figure
3.35). Decreasing the
Blend
Shape setting slows the rate of
change so that more of the region
appears mid-gray. For most applications, this subtle control is best left close
to 50.
‰
Blend Midpoint
determines the white
level at the blend midpoint (the
point equidistant between the
beginning and end of the blend).
Increasing the
Blend Midpoint
setting creates a blend that appears
brighter than the rest of the image.
Decreasing the
Blend Midpoint
setting creates a blend that is darker
than the rest of the image. A setting
of 50 means the midpoint is
approximately 50% black—for best
results in most applications, keep fairly close to this default. See Figure 3.36
Figure 3.35. “Shape” Examples
Figure 3.36. “Midpoint” Examples