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Hand pattern switching apparatus

  • US 7,499,569 B2
  • Filed: 02/23/2005
  • Issued: 03/03/2009
  • Est. Priority Date: 02/26/2004
  • Status: Expired due to Fees
First Claim
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1. A hand pattern switching apparatus which operates an object equipment based on the result of the image taken by an image pickup means for taking an image of movement of a hand, comprising:

  • means for saving the image taken in a state where a hand does not exist in an image pickup area of the image pickup means, as an initial image data;

    differentiation means for obtaining a difference image data between an original image data, which is the image taken in a state where a hand exists in the image pickup area of the image pickup means, and the initial image data, to determine a part of the difference image data corresponding to a place close to a hand;

    luminance detection means for obtaining an average luminance of the original image data corresponding to the part of the difference image data in a place close to the hand obtained by the differentiation means; and

    processing means for performing binary processing of the original image data by a threshold value based on the average luminance obtained by the luminance detection means.

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