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Chroma Enhancement Filtering for High Dynamic Range Video Coding

A video decoding and filter technology, which is applied in the fields of digital video signal modification, image communication, electrical components, etc., and can solve the problems of less resources and less prediction errors.

Active Publication Date: 2021-08-03
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, prediction of chroma blocks may consume less resources and / or result in less prediction error

Method used

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  • Chroma Enhancement Filtering for High Dynamic Range Video Coding
  • Chroma Enhancement Filtering for High Dynamic Range Video Coding
  • Chroma Enhancement Filtering for High Dynamic Range Video Coding

Examples

Experimental program
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Embodiment Construction

[0026] A detailed description of illustrative embodiments will now be described with reference to the accompanying drawings. While this description provides detailed examples of possible implementations, it should be understood that these details are intended to be illustrative and in no way limit the scope of the application.

[0027] Various digital video compression techniques have been developed and standardized to enable efficient digital video communication, distribution and consumption. For example, deployed standards such as H.261, MPEG-1, MPEG-2, H.263, MPEG-4 Part 2 and H.264 / MPEG-4 Part 10 AVC have been approved by ISO / IEC and / or ITU-T develop. As another example, the High Efficiency Video Coding (HEVC) standard has been jointly developed by the ITU-T Video Coding Experts Group (VCEG) and the ISO / IEC Moving Picture Experts Group (MPEG).

[0028] Digital video services may involve TV services via satellite, cable, and / or terrestrial broadcast channels and video app...

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PUM

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Abstract

Chroma enhancement filtering can be used in high dynamic range (HDR) video. A video coding device may identify characteristics within pictures of a video signal. Properties can include spatial area, color, brightness, or edge direction. The video coding device may determine a sample set including one or more samples associated with the characteristic. A video coding device may generate cross-plane filters based on characteristics and sample sets. The cross-plane filters may include high-pass filters. The video coding device may apply a cross-plane filter to the luma plane components of the samples in the sample set to determine the offset. The video coding device may add the offset to the reconstructed chroma plane component of the sample corresponding to the luma plane component.

Description

Background technique [0001] Video coding systems may be used to compress digital video signals. For example, a video coding system may reduce consumed storage space and / or reduce transmission bandwidth consumption associated with video signals. For example, a block-based hybrid video coding system may be used. [0002] A digital video signal can include three color planes. The three color planes include a luma plane, a blue-difference chromaticity plane, and a red-difference chromaticity plane. Pixels of the chroma plane may have a smaller dynamic range than pixels of the luma plane. For example, a chroma plane of a video image may be smoother and / or have less detail than a luma plane of a video image. Chroma blocks of a video image can be more easily predicted (eg, accurately predicted). For example, prediction of chroma blocks may consume less resources and / or result in less prediction error. [0003] High dynamic range (HDR) video can provide a wider dynamic range tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/117H04N19/46H04N19/136H04N19/186H04N19/86
CPCH04N19/46H04N19/136H04N19/186H04N19/86H04N19/117
Inventor 贺玉文叶艳
Owner INTERDIGITAL CE PATENT HLDG