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Three-dimensional shape measuring apparatus

  • US 6,674,893 B1
  • Filed: 09/06/2000
  • Issued: 01/06/2004
  • Est. Priority Date: 10/19/1999
  • Status: Expired due to Fees
First Claim
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1. A three-dimensional shape measuring apparatus comprising:

  • a light source that emits a laser beam;

    a projection part that generates pattern light having plural areas, intensity-modulated to ternary or higher representation values based on a pattern code, using the laser beam, and projects the pattern light onto an object;

    an image pickup part that performs image pickup on the light reflected from the object by projection of the pattern light to simultaneously obtain a pattern image and a luminance image; and

    an arithmetic part that calculates range information about a distance to the object based on the pattern code and the pattern image.

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