User manual

Section 3: Operation
3-68 Mirage S+/HD/WU, Matrix S+/HD/WU, Christie HD/DS+/DW, DLV User Manual
020-100001-07 Rev. 1 (11-2009)
Figure 3.19. Edge Blending Concept
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 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. 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).
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 3.20).
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.
Figure 3.20. “Shape” Examples