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Anomalous stationary object detection and reporting

  • US 10,257,466 B2
  • Filed: 06/29/2017
  • Issued: 04/09/2019
  • Est. Priority Date: 06/29/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method, comprising:

  • analyzing, via one or more processors, an input stream of captured video frames, the captured video frames defining at least one scene, the captured video frames including a corresponding bounding box(es) for objects within the captured video frames;

    determining, via the one or more processors, whether an object within the captured video frames has remained at a specified location in the at least one scene for at least a threshold period;

    determining, via the one or more processors, whether the object has remained substantially stationary within the at least one scene during the threshold period;

    upon determining that the object has remained substantially stationary and remained within the at least one scene for at least the threshold period, determining, via the one or more processors, a rareness score for the object, the rareness score determined based at least in part on a number of intersection pixels of the object'"'"'s corresponding bounding box(es), union of pixels covered by the object'"'"'s corresponding bounding box(es) during tracking period, and a change in size of the object'"'"'s corresponding bounding box(es); and

    generating, via the one or more processors, an alert upon determining the rareness score exceeds a threshold.

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