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Systems and methods for generating depth maps using images captured by camera arrays

  • US 9,060,120 B2
  • Filed: 07/30/2014
  • Issued: 06/16/2015
  • Est. Priority Date: 05/20/2008
  • Status: Active Grant
First Claim
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1. A method of generating a depth map from a plurality of images captured from different viewpoints, comprising:

  • normalizing a set of images using calibration data stored in a storage device using an address conversion module, where;

    the set of images comprises a plurality of images that are;

    captured from different viewpoints;

    include different occlusions sets;

    wherein the occlusion set of a first image is the portion of a scene visible in a second image that is occluded in the first image; and

    the set of images includes;

    images captured using the same imaging characteristics; and

    images captured using different imaging characteristics;

    detecting and metering parallax using a parallax confirmation and measurement module, where detecting and metering parallax comprises;

    determining the parallax that yields the highest correlation between pixels from images captured using the same imaging characteristics accounting for the positions of the imagers that captured the images by;

    performing redundant pair-wise measurements between pixels from images captured using the same imaging characteristics to determine pixel correlation for different parallax-induced shifts;

    keeping track of various pair-wise measurements and calculating a parallax difference that yields the highest pixel correlation ignoring pixels in the images that are in an exposed occlusion set; and

    generating a depth map using the parallax confirmation and measurement module based upon the measured parallax.

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