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Optical methods for remotely measuring objects

  • US 7,310,431 B2
  • Filed: 04/10/2003
  • Issued: 12/18/2007
  • Est. Priority Date: 04/10/2002
  • Status: Active Grant
First Claim
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1. A method to remotely measure the geometrical attributes of an object of known shape using reflected intensity from said object, the method comprising the following steps:

  • (a) illuminating said object with a light source of known wavelength with an optical pattern of known pattern shape;

    (b) optically capturing in a single snapshot and without wavelength discrimination at said known wavelength an image using solely intensity data reflected by said object to observe a reflected pattern on said object from said light source, using a camera whose location and orientation are known with respect to said light source;

    (c) executing a first computer-implemented process to locate a plurality of key points in said image obtained by said camera; and

    (d) executing a second computer-implemented process to obtain a plurality of geometrical attributes of said object using said plurality of key points.

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