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Methods and devices for encoding and decoding a HDR color picture

A color picture and encoding technology, applied in the field of color picture encoding/decoding, which can solve the problems of lack of complete backward compatibility and preserving the color level of SDR pictures.

Inactive Publication Date: 2018-03-27
INTERDIGITAL VC HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] The disadvantage of this solution is the lack of full backwards compatibility, since the resulting downscaled dynamic version of the picture (video) does not preserve the color grade of the SDR picture as the colorist would like

Method used

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  • Methods and devices for encoding and decoding a HDR color picture
  • Methods and devices for encoding and decoding a HDR color picture
  • Methods and devices for encoding and decoding a HDR color picture

Examples

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Embodiment Construction

[0099] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure are shown. This disclosure may, however, be embodied in many alternative forms and should not be construed as limited to the embodiments set forth herein. Therefore, while the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will be described in detail herein. It should be understood, however, that there is no intent to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure as defined by the claims .

[0100] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used ...

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Abstract

The present disclosure generally relates to a method and device of encoding a High Dynannic Range (HDR) color picture and at least one first Standard Dynannic Range (SDR) color picture, said method comprising encoding (101) a second Standard Dynamic Range (SDR) color picture obtained from the HDR color picture; According to the present disclosure, said method further comprises determining (102) atleast one piece of color remapping information, from said second Standard Dynamic Range (SDR) color picture to said at least one first Standard Dynamic Range (SDR) color picture, said at least one piece of color remapping information being used to obtain an approximation of said at least one first Standard Dynamic Range (SDR) color picture from said second Standard Dynamic Range (SDR) color picture.

Description

technical field [0001] This disclosure generally relates to picture / video encoding and decoding. In particular but not exclusively, the technical field of the present disclosure relates to color pictures whose pixel values ​​belong to the high dynamic range (HDR) and whose values ​​belong to the standard dynamic range (HDR) and by applying to said high dynamic range (HDR) color pictures Encoding / decoding (SDR) of at least one color picture obtained from the color grading post-processing operation. Background technique [0002] This section is intended to introduce the reader to various aspects of technology, which may be related to various aspects of the disclosure that are described and / or claimed below. It is believed that this discussion helps to provide the reader with background information to facilitate a better understanding of various aspects of the present disclosure. Accordingly, it should be understood that these statements are to be read in this light, and not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/30
CPCH04N19/30H04N19/172H04N19/186G06T5/009G06T5/10H04N19/60H04N9/643H04N9/68H04N9/77
Inventor F.勒利内克S.拉塞尔P.安德里冯
Owner INTERDIGITAL VC HLDG INC
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