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With the recent developments in fast hidden surface algorithms and a method for smooth shading of half-tone pictures, it has become feasible to generate useful movies with the computer. This paper describes a system used to make computer generated movies. It also explains the methods used to attempt to solve the problems of object representation, object manipulation, concurrent motion, and ease of specifying motion. The system was first used to make a movie of a hand that lasts for little more than a minute.
Edwin Catmull (Sat,) studied this question.