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Block noise detecting method and apparatus, and block noise reducing method and apparatus

  • US 20070223835A1
  • Filed: 08/01/2006
  • Published: 09/27/2007
  • Est. Priority Date: 03/27/2006
  • Status: Active Grant
First Claim
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1. A block noise detecting method comprising the steps of:

  • detecting a pixel boundary difference across a pixel boundary on the basis of a difference value between pixel values of adjacent pixels across the pixel boundary on a picture plane of an input image frame, and a predicted pixel value on the pixel boundary predicted from at least a plurality of pixels on one side of the pixel boundary; and

    accumulating the pixel boundary differences for one image frame to detect a block noise.

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