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Hand gesture machine control system

  • US 5,594,469 A
  • Filed: 02/21/1995
  • Issued: 01/14/1997
  • Est. Priority Date: 02/21/1995
  • Status: Expired due to Fees
First Claim
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1. A system for control of a machine having a display screen and means for controlling said machine via actuating on-screen machine control icons, comprising:

  • means for detecting the existence of and position in space of a predetermined hand gesture and for generating corresponding existence and position signals responsive thereto;

    means for providing an on-screen hand icon corresponding in on-screen position to the detected position of said predetermined hand gesture in space, such that changes in position of said predetermined hand gesture result in a corresponding change in position of said on-screen hand icon, whereby the position of said on-screen hand icon is controllable by movement of said predetermined hand gesture; and

    ,means for detecting coincidence of said on-screen hand icon with an on-screen machine control icon as said hand icon made to move over said machine control icon by movement of said predetermined hand gesture and for generating corresponding machine control signal responsive to said detected coincidence wherein said means for detecting the existence and position of said predetermined hand gesture includes;

    means for providing a hand gesture template including orientation vectors corresponding to orientations of edges of said predetermined hand gesture corresponding to said predetermined hand gesture;

    means for optically scanning a region at which said predetermined hand gesture is expected to exist and for providing orientation vectors corresponding to orientations of edges of images within said scanned region;

    means for correlating the orientation vectors of said hand template with orientations vectors of the images within said scanned region to provide a correlation values; and

    ,means for providing a trigger signal when said correlation value exceeds a predetermined threshold.

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