Kramer Electronics VP-790 - Manual (Page 28)

VP-790 - Configuring the VP-790 via the OSD MENU Screens 23
23
Setting Function
Blend Width
(Contd.) Each display in the matrix needs to be set to the same blend
width and offset value for its left and right sides. The top and
bottom blend width and offset values also need to be identical
(though they don’t have to be identical to the left and right
settings). This is necessary for the calculating the Auto Zoom
for the matrix.
Blend Curve Type Select the blend curve type to Off, S-Curve or Align Pattern
Off: the blend area is displayed without applying any gain factor (align
pattern or S-curve)
Align Pattern: Reduce the image intensity of each pixel in the blend
area by 50%
S-Curve: Select S-Curve when the blend region (defined in the Blend
Width menu item above) and the physical blend match. The S-Curve
reduces the image intensity along the blend width.
Use the S-Curve Value slider to control the image intensity change rate
along the blend area. Use the Output Gamma slider to set the output
gamma to match the gray scale of the images
Black Level Uplift Set the uplift black level: Non Blend Region, Top Left, Top Middle, Top
Right, Middle Left, Middle Right, Bottom Left, Bottom Middle and Bottom
Right
Setting the black levels for the display edges compensate for additional
light leakage from multiple projectors in the overlapping areas.
The adjustable areas are available according to the position of the
display in the matrix.
Setting the middle regions automatically sets the adjacent left and right
regions, but you can still set the left and right separately.
Reduce Black Level
Uplift Width Adjust the black level uplift width in case the projection is performed
under non-rectangular conditions.
The black level uplift may be used for bright projectors in dark
environments.
The Black Level Uplift field may need to be adjusted to achieve a perfect
result. There may be an area of light leakage beyond the edge of the
active image from the projector. With these controls the edges of the
black uplift region can be moved so they can be aligned with the edges
of the area of light leakage. In the case of projection under non-
rectangular conditions the projection fields of adjacent projectors are not
aligned with the blend region.
The corners of the non-blend region can be moved to allow tracking of
the edge of the projection field of adjacent projectors
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