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Method and apparatus for estimating feature values in a region of a sequence of images

  • US 6,681,058 B1
  • Filed: 03/06/2000
  • Issued: 01/20/2004
  • Est. Priority Date: 04/15/1999
  • Status: Expired due to Term
First Claim
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1. A method for estimating values of features of one or more image regions in a video sequence including a plurality of video image frames when the one or more of the features are obscured by objects over portions of the video sequence, the method comprising the steps of:

  • generating a histogram for each image region over the a plurality of image frames in the sequence;

    calculating at each image region a mode value as indicated by the histogram;

    replacing each image region by its mode value to produce an image of the estimated feature values of the sequence of images; and

    excluding, from the histogram generating step, regions of the plurality of images in which there is a prior indication that the features are obscured.

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