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Tone mapping method

  • US 10,229,484 B2
  • Filed: 11/30/2016
  • Issued: 03/12/2019
  • Est. Priority Date: 11/30/2016
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • determining, using image processing circuitry, whether one or more pixel intensity values of a pixel in a color space are within a pixel saturation range, wherein the pixel is one of a plurality of pixels of an input digital image;

    setting, using the image processing circuitry, a luminance value of the pixel based on the determination of whether one or more pixel intensity values of the pixel are within the pixel saturation range;

    determining, using the image processing circuitry, a pixel gain based on the set luminance value of the pixel;

    applying, using the image processing circuitry, the determined pixel gain to the pixel; and

    generating, using the image processing circuitry, an output digital image based on the input digital image, the generating the output digital image including determining and applying respective gains to the plurality of pixels of the input digital image, wherein when at least one of the one or more pixel intensity values is within the pixel saturation range, the setting the luminance value of the pixel is based on at least one of;

    a pixel saturation intensity value; and

    the at least one of the one or more pixel intensity values, wherein the setting the luminance value of the pixel based on the pixel saturation intensity value comprises applying a weight to the pixel saturation intensity value.

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