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Video analysis

  • US 8,983,131 B2
  • Filed: 04/15/2013
  • Issued: 03/17/2015
  • Est. Priority Date: 05/08/2012
  • Status: Active Grant
First Claim
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1. A method of analyzing objects in images captured by a monitoring camera, comprising the steps of:

  • receiving, by an electronic device, a first sequence of image frames having a first image resolution and covering a first image area;

    receiving, by the electronic device, a second sequence of image frames having a second image resolution higher than the first image resolution and covering a second image area being a portion of the first image area;

    detecting, by the electronic device, objects present in the first sequence of image frames;

    detecting, by the electronic device, objects present in the second sequence of image frames;

    providing, by the electronic device, a first set of object masks for objects detected in the first sequence of image frames;

    providing, by the electronic device, a second set of object masks for objects detected in the second sequence of image frames;

    identifying, by the electronic device, an object present in the first and the second sequence of image frames by detecting a first object mask in the first set of object masks at least partly overlapping a second object mask in the second set of object masks;

    merging, by the electronic device, the first and the second object mask into a third object mask by including data from the first object mask for parts present only in the first image area, and data from the second object mask for parts present in the second image area; and

    providing, by the electronic device, a third set of object masks includingthe first set of object masks excluding the first object mask;

    the second set of object masks excluding the second object mask; and

    the third object mask.

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