November 2017
Intermediate to advanced
576 pages
18h 18m
English
Content preview from Digital Compositing for Film and Video, 4th Edition
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5Spill Suppression
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When an object is photographed in front of a greenscreen the green light from the brightly lit green backing screen bounces around the set and contaminates the foreground object in a variety of ways. The edges of the target object become blended with the green backing. There may also be semi-transparent elements, such as smoke or wisps of hair. Any motion blur or out-of-focus elements will also have their colors mixed with the greenscreen. And then there is flare. All of this green contamination is collected under the general heading of “spill” and it must be surgically removed from the ...
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