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Method and device for determining chrominance information of video block

A technology for chrominance information and video blocks, which is applied in the field of determining the chrominance information of video blocks, can solve problems such as the improvement of video compression rate, and achieve the effect of improving coding efficiency

Active Publication Date: 2020-06-02
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present disclosure provides a method and device for determining chrominance information of a video block, so as to at least solve the problem that the video compression rate needs to be improved in the related art

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  • Method and device for determining chrominance information of video block
  • Method and device for determining chrominance information of video block
  • Method and device for determining chrominance information of video block

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Embodiment approach

[0104] In another possible implementation manner, when the bit value of the third bit is equal to 1, two context models can be used when decoding the fourth bit, wherein, in the frame of the luma block corresponding to the chroma block When the intra prediction mode is an upward intra prediction mode, one context model is used; otherwise, another context model is used.

[0105] In another possible implementation manner, when the bit value of the third bit is equal to 1, two context models can be used when decoding the fourth bit, wherein, in the frame of the luma block corresponding to the chroma block When the intra prediction mode is a leftward intra prediction mode, one context model is used; otherwise, another context model is used.

[0106] The third type: mixed signaling in CCLM mode.

[0107] During specific implementation, the first two methods can be used together, that is, the bit string after binarizing the CCLM mode of the chroma block, according to the intra pred...

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Abstract

The present disclosure relates to a method and device for determining chrominance information of a video block, which belongs to the technical field of video encoding and compression, and includes: determining the type of CCLM mode of the target video block according to the luna intra prediction mode information of the target video block in the video frame to be processed; according to the type ofCCLM mode of the target video block, selecting the reference video block that has completed the luna sampling and chroma sampling around the target video block; and according to the chroma sampling and luma sampling of the reference video block, determining the linear relationship between the chroma sampling and luma sampling of the target video block, and then determining the chroma sampling ofthe target video block according to the determined linear relationship and the luma sampling of the target video block sampling, in this way, according to the luma intra prediction mode information ofthe target video block, determining the type of the CCLM mode of the target video block, the information used to represent the type of the CCLM mode of the target video block can be not encoded or less encoded, therefore, the encoding efficiency can be improved.

Description

[0001] This application claims priority to U.S. Patent Application No. 62 / 794,544, entitled "Cross Component Linear Model Signaling in Video Coding," filed with the U.S. Patent Office on January 18, 2019, the entire contents of which are incorporated by reference at In this application. technical field [0002] The present disclosure relates to the technical field of video coding and compression, and in particular to a method and device for determining chrominance information of a video block. Background technique [0003] In the technical field of video coding and compression, multiple video coding technologies can be used to compress video data, and the video coding is performed according to one or more video coding standards, wherein the video coding standard includes a multifunctional video codec ( Versatile Video Coding, VVC), Joint Exploration Model (JEM), High-Efficiency Video Coding (HEVC) (H.265 / HEVC), Advanced Video Coding (AVC) ) (H.264 / AVC), Moving Picture Exper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/186H04N19/593H04N19/13H04N19/184H04N19/96H04N19/132
CPCH04N19/186H04N19/593H04N19/13H04N19/184H04N19/96H04N19/132
Inventor 郑云飞陈宇聪黄跃闻兴于冰王祥林陈漪纹
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD