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Computer Vision for Interactive Computer Graphics



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Computer Vision for Interactive Computer Graphics W T Freeman D Anderson P Beardsley C Dodge y H Kagez K Kyumaz Y Miyakez M Roth K Tanakaz C Weissman x W Yerazunis Appeared in IEEE Computer Graphics and Applications May June 1998 pp 4253 Abstract Computers looking through a camera at people is a potentially powerful technique to facilitate human computer interaction The computer can interpret the user s movements gestures and glances Fundamental visual algorithms include tracking shape recognition and motion analysis For interactive graphics applications these algorithms need to be robust fast and run on inexpensive hardware Fortunately the interactive applications also make the vision problems easier they constrain the possible visual interpretations and provide helpful visual feedback to the user Thus some fast and simple vision algorithms can t well with interactive graphics applications We describe several vision algorithms for interactive graphics and present various vision controlled graphics applications which we have built which use them vision based computer games a hand signal recognition system and a television set controlled by hand gestures Some of these applications can employ a special arti cial retina chip for image detection or pre processing Keywords Human computer interface computer vision interactive computer graphics 1 Introduction Vision can be a powerful interface device for computers There is the potential to sense body position head orientation direction of gaze pointing commands and gestures MERL a Mitsubishi Electric Research Lab 201 Broadway Cambridge MA 02139 freeman merl com ypresent address MIT Media Lab 20 Ames St Cambridge MA 02139 zMitsubishi Electric Advanced Technology R D Center 8 1 1 Tsukaguchi Honmachi Amagasaki City x Hyogo 661 Japan present address Epiphany Software Belmont CA Such unencumbered interaction can make computers easier to use Applications could include computer controlled games or machines or a more natural



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