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Target-less auto-alignment of image sensors in a multi-camera system

  • US 10,055,816 B2
  • Filed: 09/21/2017
  • Issued: 08/21/2018
  • Est. Priority Date: 03/20/2014
  • Status: Active Grant
First Claim
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1. A computer-implemented method for determining a pixel shift between an image pair captured by image sensors, the method comprising:

  • accessing a first image and a second image of the image pair, the first and second images comprising image data representative of an overlapping field of view between the image sensors;

    performing a smoothing operation on the first image and the second image to produce smoothed image data;

    determining edge magnitude data and edge phase data from the smoothed image data;

    identifying, by one or more processors, one or more edges in the image data based at least in part on the edge magnitude data and the edge phase data of the smoothed image data; and

    determining a pixel shift between the image pair by matching a first edge in the first image with a second edge in the second image using determined edge lengths for the identified one or more edges.

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