![]() The process goes by many names: color keying, bluescreening, greenscreening, pulling a matte, color differencing-even chroma keying, a term that really belongs to analog color television, a medium defined by chroma and heavily populated with weather forecasters. (Several contenders are in some form of development.) ![]() As of 2007, the tools to do color keying are more powerful than ever, but the overall process still remains full of pitfalls-which likely won't be overcome until some other means evolves to define precise areas of transparency in foreground footage. and Adobe Press.Ĭolor keying was first devised in the 1950s as a clever means to combine live-action foreground footage and backgrounds that could come from virtually anywhere. Used with permission of Pearson Education, Inc. ![]() This article is adapted from Adobe After Effects CS3 Professional Studio Techniques by Mark Christiansen.
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