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Method and apparatus for filtering video data using a programmable graphics processor

  • US 8,520,009 B1
  • Filed: 12/29/2009
  • Issued: 08/27/2013
  • Est. Priority Date: 05/29/2003
  • Status: Active Grant
First Claim
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1. A non-transitory computer-readable medium including a shader program that, when executed by a programmable graphics processor, causes the programmable graphics processor to:

  • select a scaling filter to be applied to a source image to produce a destination image, wherein the scaling filter is stored within a filter texture map and is associated with a unique texture identification, and data associated with each pixel in the destination image includes a pair of filter texture map coordinates;

    obtain a filter kernel phase for each pixel in the destination image; and

    extract a fractional portion of each scaling filter texture map coordinate for each pixel in the destination image, wherein the fractional portion is used as the filter kernel phase for accessing the filter texture map.

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