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System and method of using range image data with machine vision tools

  • US 6,751,338 B1
  • Filed: 12/15/2000
  • Issued: 06/15/2004
  • Est. Priority Date: 12/15/2000
  • Status: Active Grant
First Claim
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1. A machine vision system comprising:

  • an acquisition system for acquiring a first range image of an object, the first range image including a plurality of range data, wherein each datum of the range data includes a range value and an associated confidence value;

    a machine vision search tool coupled to the acquisition system for locating an instance of a trained pattern in the image, the tool registering the trained pattern transformed by at least two translational degrees of freedom and at least one non-translational degree of freedom with respect to an image plane; and

    processing means to construct the image, including means for producing range values for the range image by adjusting each of the range values by applying the confidence value associated with the range value to be adjusted, and the confidence values and range values of neighboring portions of the first range image.

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