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SYSTEM FOR CODING HIGH DYNAMIC RANGE AND WIDE COLOR GAMUT SEQUENCES

  • US 20170026646A1
  • Filed: 07/22/2016
  • Published: 01/26/2017
  • Est. Priority Date: 07/22/2015
  • Status: Active Grant
First Claim
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1. A method of encoding a digital video, comprising:

  • receiving a digital video data set including at least one of high dynamic range (HDR) and wide color gamut (WCG) video data;

    identifying a characteristic of a portion of the digital video data set;

    modifying a perceptual transfer function according to the identified characteristic;

    applying the modified perceptual transfer function to the portion of the digital video data set to generate a perceptually modified portion of the digital video data set;

    applying a perceptual normalization including at least one of a gain factor or an offset to the perceptually modified digital video data set to generate a perceptually normalized portion of the digital video data set;

    encoding the perceptually normalized portion of the video data set to generate a bit stream;

    transmitting, to a decoder, the bit stream and metadata that indicates the modification of the perceptual transfer function, that identifies the perceptual normalization, and that identifies the portion of the video data set.

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