Christie J Series User Manual page 95

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 two-page Edge Blending submenu—
access via Configuration menu, then go to the
Geometry and Color menu and select Edge
Blending. The Advanced Edge Blending
option opens the second page of the Edge
Blending submenu.
ADVANCED EDGE BLENDING - Submenu
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. Slide bar values
represent the number of eight-pixel steps used for the blend. For example, a setting of "eight" 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).
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-grey (see Figure 3.20). Decreasing the Blend Shape
setting slows the rate of change so that more of the region appears mid-grey. 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.
Show Blending Overlap turns your defined blend width area to solid grey so that, if needed, simply
overlapping the grey bars can seamlessly align two adjacent images. Toggle the Show Blending Overlap
off to reactivate the blend effect.
installed.
Other Functions
For convenience, the Edge Blending submenu also includes related options for enabling a specific color and/
or test pattern, or for working with colors or the lamp. Such functions duplicate those provided elsewhere in
the menu system.
J Series 1000W and 1200W User Manual
020-100706-02 Rev. 1 (03-2014)
NOTE: Ranges: 0-80 horizontal, 0-60 vertical.
NOTE: Blending Overlap appears as Reserved when Christie TWIST is
F 3-37 E B
IGURE DGE LENDING
Section 3: Operation
C
ONCEPT
3-45