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Shadow and highlight detection system and method of the same in surveillance camera and recording medium thereof

  • US 20090087025A1
  • Filed: 06/10/2008
  • Published: 04/02/2009
  • Est. Priority Date: 09/29/2007
  • Status: Active Grant
First Claim
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1. A system for detecting a shadow region and a highlight region, the system comprising:

  • an image capturing unit to capture a new image;

    a background model unit to receive the new image and update a stored background model with the new image;

    a difference image obtaining unit to compare the new image with the background model and to obtain a difference image between the new image and the background model;

    a penumbra region extraction unit to extract a partial shadow region or a partial highlight region by measuring a sharpness of an edge of the difference image and expanding a background region; and

    an umbra region extraction unit to extract a complete shadow region or a complete highlight region based on the result of the extraction by the penumbra region extraction unit.

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