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Image alignment for burst mode images

  • US 10,453,204 B2
  • Filed: 08/14/2017
  • Issued: 10/22/2019
  • Est. Priority Date: 12/06/2016
  • Status: Active Grant
First Claim
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1. A computer-implemented method of generating aligned images from burst images, the method comprising:

  • detecting a plurality of feature points in a reference image and a subsequent image;

    determining a feature descriptor for each feature point of the plurality of feature points;

    based on the feature descriptor of each feature point, determining matching feature points between the reference image and the subsequent image;

    determining at least one homography that maps matching feature points between the reference image and the subsequent image, wherein determining at least one homography comprises applying a homography motion model to a plurality of local regions individually to determine a homography for each local region that maps feature points in a local region of the reference image to feature points in a corresponding local region of the subsequent image; and

    warping the subsequent image based on the at least one homography to generate a new aligned image that is aligned to the reference image.

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