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Systems and methods for estimating pixel intensity

  • US 8,538,204 B1
  • Filed: 09/07/2011
  • Issued: 09/17/2013
  • Est. Priority Date: 09/07/2011
  • Status: Active Grant
First Claim
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1. A method for estimating the intensity of a pixel included within an image, the method comprising:

  • (i) generating a plurality of bidirectional paths extending between a light source and a set of measurement points, each bidirectional path comprising a light subpath extending from the light source and an eye subpath extending from the view point and coupled to the light subpath,wherein each light subpath is characterized by a number of vertices included within said light subpath, andwherein each eye subpath is characterized by a number of vertices included within said eye subpath;

    (ii) sorting the plurality of bidirectional paths into separation populations, wherein each population includes bidirectional paths constructed from eye subpaths having a common number of vertices, and light subpaths having a common number of vertices;

    (iii) computing an intensity contribution of each population, and(iv) summing the intensity contributions over a plurality of populations to estimate the intensity of the pixel.

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