Kramer Electronics VP-790 - Manual (Page 21)

VP-790 Warp Generator – Preparing a Grid 19
At this stage, if the corners and edges cannot be further improved using Mirror in H
(due to slight asymmetries in the curved screen setup), you can de-activate the
function by unchecking it and then tweaking each point independently to get a
perfect match.
For this kind of setup (with an unusually short throw), the center and corners
currently match, but the curved lower part does not. The current grid with a curved
screen in its lower part, does not match.
To fix this start by adjusting the 3x3 Curvature X slider (left to right curvature
adjustment) to the right by a few notches.
Doing so will affect the position of the red cue lines that reflect the overall shape of
the warp (see
U
Figure 19
U
):
Figure 19: Adjustment of the 3x3 Curvature X slider
The warp grid takes a more “barrelled” shape now as indicated by the Cue Lines.
Once again, update the VP-790 with the last changes to the warp
map.
By setting the curvature of the warp grid to better match the bottom edge of the
screen, we have also improved the uniformity of the warped image as a whole and
how it looks on the screen.
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