Kramer-electronics VP-790 Manual do Utilizador descarregar pdf (Página 19)

VP-790 Warp Generator – Preparing a Grid 17

Click the CREATE button to create the preset warp grid, as illustrated in UFigure 17U:

Figure 17: Initial Warp Grid for Convex Screen

The preset warp grid illustrated in UFigure 17U, displays the corrections for both the

keystone problem due to the position of the projector and the screen curvature.

The preset settings are fairly subtle compared to the setup given in this example

and are more suited to the more common setups with longer throw lenses and more

subtly curved screens used more often in practice. Despite this, it is very simple to

adjust this preset generated warp to match the setup in this example.

To do this quickly, Mirror in H in the Point Edit Control tools have been enabled

automatically by the preset creation function.

Before adjusting the shape of the grid in any way using Mirror in H, make sure that

the warped image is centered and has been scaled to the correct size for the

screen. If this isn’t the case, center the grid:

1. Enable the Move All function in the Point Edit Control located in the Grid

Editing section of the Evaluator Controls tool box.

2. Move the whole grid so that the center of the warped image is centered on

the projection screen/surface.

3. Disable Move All.

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Kramer-electronics VP-790 Manual do Utilizador Página 19