CompuServe Messages

Steven, maybe I can offer an alternate suggestion. It will mean an extra trip through VP, but I think it will be less headache than trial-and-error. Since your floor and background will not usually be the same color, run a VP sequence that alphas the background color against a color that matches your floor. This will effectively *replace* the background with the floor color. You might have to sample a pixel from the floor in a paint program to get the RGB value for best match. Watch those gammas going in and out. Next trip through VP. Now that background and floor match exactly, with exception of the shadowed areas, you can alpha against the new uniform background with the background of your room or whatever. I have not verified this idea: "It just came to me."