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Identifying objects in images using object identity probabilities based on interframe distances

  • US 9,105,306 B2
  • Filed: 12/25/2007
  • Issued: 08/11/2015
  • Est. Priority Date: 12/27/2006
  • Status: Active Grant
First Claim
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1. An identity determination apparatus comprising:

  • a processor configured to;

    detect a plurality of objects from an input video by using pattern recognition techniques with templates;

    calculate an interframe distance between frames from which the objects are detected, the interframe distance being a time distance between frames from which the respective objects are detected;

    calculate an object identity probability by using the calculated interframe distance and a relationship between the interframe distance and the object identity probability, the relationship being preliminarily set on a basis of a scenario of the input video; and

    determine identity of the objects based on a comparison between the calculated object identity probability and a threshold,wherein the determined identity of the objects is updated when a new frame having a detected object is processed, the determined identity is based on a first group of frames, the update being based on frames including at least part of the first group of frames and the new frame, and wherein when a result of the determined identity based on the first group of frames is not consistent with a result of a determined identity of the objects based on the at least part of the first group of frames and the new frame, the update includes replacing the result of the determined identity based on the first group of frames with the result of the determined identity based on the at least part of the first group of frames and the new frame.

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