remove shadow?

dvideo wrote on 7/14/2006, 9:58 AM

i have some footage of people on stage where there is a shadow off to there right on the back wall. any suggestions on how to get rid of this?
thank you.

Comments

GlennChan wrote on 7/14/2006, 12:41 PM

You could get a clean shot of the background, and superimpose that over that area.

In Vegas, one way to do it:
Find the clean shot of background.
Use a velocity envelope, right click the point, set speed to 0%
Use bezier masking to isolate the b/g.
Put this on a track above the real footage.

This will only work in particular situations.

Grazie wrote on 7/14/2006, 1:29 PM

. . and who said video/film was about reality? However, if you got the material, it works extremely well.

JackW wrote on 7/14/2006, 1:56 PM

Go to the VAAST web site and look at the article by Douglas Spotted Eagle entitled "Are You Exposed?" The techniques given here -- a combination of the levels, cookie cutter and glow plugins -- should enable you to lighten up the shadowed area.

You'll have to key frame everything if the shots involve pans or tilts.

Jack

johnmeyer wrote on 7/14/2006, 2:22 PM

If the shot was taken from a tripod, you could take a snapshot of one frame, preferably with as little in the foreground as possible. Use photoshop to clone over the shadow. Then, use a difference key to make this background replace the real background. To keep things more realistic, you can further refine using a mask so that only the portion where the shadow was removed is actually used in the difference key.

Here are the links to discussions and to a tutorial about difference keys:

Help with difference key technique

Key difference technique-Look at the results!

Difference Key Tutorial