×

CONTENT-ADAPTIVE ADJUSTMENTS TO TONE MAPPING OPERATIONS FOR HIGH DYNAMIC RANGE CONTENT

  • US 20180218481A1
  • Filed: 01/27/2017
  • Published: 08/02/2018
  • Est. Priority Date: 01/27/2017
  • Status: Active Grant
First Claim
Patent Images

1. A computer system comprising one or more processing units and memory, wherein the computer system implements a playback system that is to be connected to a target display device having a brightness level that is dynamically controllable by the playback system, and wherein the playback system includes:

  • decision logic configured to;

    receive histogram information for sample values of a picture of high dynamic range (“

    HDR”

    ) content;

    set a tone mapping function based at least in part on the histogram information for the sample values of the picture of HDR content;

    send, to the target display device, a control signal that indicates a brightness level of the target display device for display of the picture of HDR content; and

    after tone mapping, send, to the target display device, the sample values of the picture of HDR content; and

    a tone mapper configured to, as part of rendering the picture of HDR content for output to the target display device, apply tone mapping to input values for the sample values of the picture of HDR content, according to the tone mapping function, and thereby produce output values for the sample values of the picture of HDR content.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×