gesture recognitionGesture recognition is human interaction with a computer in which human gestures, usually hand motions, are recognized by the computer. Recognizing gestures as input might make computers more accessible for the physically-impaired and make interaction more natural for young children. It could also provide a more expressive and nuanced communication with a computer. Several companies have developed prototype products. Gesture recognition is already being used for interaction with a 3-D immersion environment. A prototype motion processor developed by Toshiba allows a computer to recognize hand motions and to display them in real-time on the computer's display. Proposed applications include word processing using input with hand sign language, games, and other entertainment and educational approaches in which hand motion could result in multimedia effects. Toshiba's motion processor works by emitting an infrared transmission light near the hand area and "reading" the light reflected back from the hand. Reflections from areas beyond the hand don't occur because the light is quickly dissipated over distance. The reflected light allows the computer to continuously build a 3-D motion image of the hand, which can be displayed or not. Other forms of gesture recognition than hand gestures are being studied. Finger pointing is one area of study as a way to select or move objects around. Face tracking, eye motion, and lip reading are also being considered as ways to provide interaction. There have also been multimedia experiments in which the entire human body and its range of motions was used to produce computer effects.
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| Last updated on:
Sep 21, 2005 |
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