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Local image statistics collection

  • US 9,077,943 B2
  • Filed: 05/31/2012
  • Issued: 07/07/2015
  • Est. Priority Date: 05/31/2012
  • Status: Active Grant
First Claim
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1. A method for generating local image statistics of image data comprising:

  • receiving, via processing circuitry, input pixels of a block of the image data;

    determining, via the processing circuitry, luminance values associated with the input pixels of the block of the image data; and

    generating, via the processing circuitry, a local image statistic using the luminance values associated with the block of the image data or red, green, or blue subpixels of the block of the image data, or a combination thereof, wherein generating the local image statistic comprises;

    downsampling the input pixels into a downsampled pixel with red, green, and blue components;

    determining an average luminance of the red, green, and blue components of the downsampled pixel;

    determining a maximal luminance of the red, green, or blue components of the downsampled pixel; and

    mixing the average luminance and the maximal luminance according to a global mixing value applied to the input pixels.

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