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Keying out an unwanted background
I need to replace a background behind two people talking. The current background is sort of white-gray and is in the center of the picture at the 90 degree corner of a room. Since the people move slightly when they talk, what is the best way to key out the current background for a new background.
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2 Replies
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I guess the most accurate way would be to rotoscope them out.
Tedious and slow …Maybe someone has a better idea for this ?
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best bet is to do a rough “garbage” mask around the subject, and then attempt to push the luminance and contrast (using curves, levels, and channel mixer) until the edges start to look good on the matte. Then, paint in any areas of the matte that the luminance adjustments missed. Slow, but faster than rotomasking. If the shot is too difficult to pull all the edges together, a procedural solution involving multiple garbage masks may solve your problems.
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