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Method and apparatus for quantitative 3-D imaging

  • US 8,576,381 B2
  • Filed: 01/22/2008
  • Issued: 11/05/2013
  • Est. Priority Date: 01/22/2007
  • Status: Active Grant
First Claim
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1. A method for constructing a representation of a surface of a target object by using an addressable pattern, comprising acts of:

  • acquiring a plurality of images of an addressable pattern from different viewpoints through an imaging lens and a mask having at least one set of off-axis apertures, each of the plurality of images comprising addressable pattern information and at least one point representing at least one aspect of a target object, wherein the at least one set of off-axis apertures filters light reflected from the surface of the target object into the plurality of images;

    processing the plurality of images to assign an address to each point in each of the plurality of images;

    developing an addressed list of points using the address of each point in each of the plurality of images;

    returning the addressed list of points to an imaging system processor for conversion into a three-dimensional measurement; and

    causing the imaging system processor to generate a representation of a surface of a target object based on the three-dimensional measurement.

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