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Method and apparatus for short range motion adaptive noise reduction

  • US 7,961,972 B2
  • Filed: 05/01/2007
  • Issued: 06/14/2011
  • Est. Priority Date: 05/01/2007
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • generating and storing, using a processor, in a lookup table a first array of next field values for use in generation of weighted pixel values and generating and storing a second array in the lookup table of previous field values for use in generation of the weighted pixel values;

    determining, using the processor, if motion is present in a pixel of a field under analysis;

    if the motion is present, performing, using the processor, spatial de-noising using a weighted pixel average of a window of a predetermined size, wherein the predetermined size is based on whether a texture or edge is detected for the pixel under analysis;

    performing, using the processor, temporal de-noising if the motion is not detected using a weighted pixel value between the pixel and a previous pixel using information in the lookup table; and

    outputting, using the processor, updated pixel information from the spatial de-noising or the temporal de-noising and storing the updated pixel information in a storage.

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