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Efficient detection of constant regions of an image

  • US 8,363,954 B1
  • Filed: 07/13/2012
  • Issued: 01/29/2013
  • Est. Priority Date: 03/06/2006
  • Status: Active Grant
First Claim
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1. An image processor that is configured to:

  • determine that an entire area of an image analysis window at a previous position of an image frame is a constant region; and

    in response to determining that the entire area of the image analysis window at the previous position is a constant region,analyze, at a current position of the image frame, a number of pixels in the image analysis window that is less than a total number of pixels in the image analysis window; and

    determine that an entire area of the image analysis window at the current position is a constant region based on the analysis of the number of pixels in the image analysis window that is less than the total number of pixels at the current position.

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