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Method for detecting shadow of object

  • US 8,189,913 B2
  • Filed: 01/07/2009
  • Issued: 05/29/2012
  • Est. Priority Date: 11/06/2008
  • Status: Active Grant
First Claim
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1. A shadow detection method, comprising:

  • detecting a moving object in a plurality of continuous images;

    calculating a histogram of a color variation of the moving object in each of the images;

    accumulating the histograms of the color variation in the images to obtain a cumulative histogram;

    estimating a distribution of the color variation in the cumulative histogram to obtain a shadow distribution function; and

    determining whether each pixel in a received image belongs to a shadow by using the shadow distribution function.

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