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出版University of Tokyo, Faculty of Science, Department of Information Science, 1990
URLhttp://books.google.com.hk/books?id=riWiGwAACAAJ&hl=&source=gbs_api
註釋Abstract: "As animating objects is becoming very popular in many applications, there is an increasing need to directly manipulate objects when generating an animation sequence. While manipulating objects, it will be indispensable to compare the difference in motion of the objects so that the validity of motion can be investigated. Motion comparison provides the basis to realize an object-oriented computer animation system with a reliable function to control the movement of objects. This paper presents an algorithm for motion comparison in a 4D environment, based on the construction of a motion-specific object coordinate system for each object."