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Structured-light, triangulation-based three-dimensional digitizer

  • US 6,549,288 B1
  • Filed: 05/14/1999
  • Issued: 04/15/2003
  • Est. Priority Date: 05/14/1998
  • Status: Expired due to Term
First Claim
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1. A system for determining a three dimensional profile of an object comprising:

  • a first light-source unit configured to project a structured light pattern on the object and configured to uniformly illuminate the object; and

    an image-detecting device configured to detect a sequence of images, the sequence of images including at least one structured light pattern image and at least one uniform illumination image;

    wherein said structured light pattern comprises a plurality of light stripes, having a gradual variation in intensity of light, and wherein said image-capturing device is located relative to said first light-source unit at a known position, and wherein depth coordinates corresponding to two-dimensional coordinates of detected light stripes in each image are calculable by triangulation based on an angle of approach of each of said light stripes onto said object, whereby a plurality of three-dimensional coordinates representative of said three-dimensional profile of said object are determined.

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