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Encoding and decoding method, device and system for intra-frame prediction mode of chrominance component

An intra-frame prediction mode and chrominance component technology, which is applied in the field of video coding and decoding, and can solve the problems of large number of coding bits and limiting decoding throughput.

Active Publication Date: 2020-04-07
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0005] In view of this, the present application provides a method, device and system for encoding and decoding intra-frame prediction modes of chrominance components, so as to solve the problem that the existing method causes a large number of encoding bits and limits the decoding throughput

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  • Encoding and decoding method, device and system for intra-frame prediction mode of chrominance component
  • Encoding and decoding method, device and system for intra-frame prediction mode of chrominance component
  • Encoding and decoding method, device and system for intra-frame prediction mode of chrominance component

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[0038] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0039] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

An encoding method for an intra-frame prediction mode of a chrominance component provided by the invention comprises the following steps: determining chrominance component intra-frame prediction attribute information of a current image block; for any sub-block in the current image block, selecting a target intra-frame prediction mode for the chrominance component of the sub-block from intra-frameprediction modes matched with the chrominance component intra-frame prediction attribute information, and encoding the target intra-frame prediction mode to obtain encoding information of each sub-block; and according to the encoding information of each sub-block in the current image block, sending an encoding bit stream carrying indication information to a decoding end, the indication informationbeing used for indicating the chrominance component intra-frame prediction attribute information of the current image block. According to the encoding and decoding method, device and system for the intra-frame prediction mode of the chrominance component, the encoding bit number can be reduced, and the decoding throughput can be improved.

Description

technical field [0001] The present application relates to the technical field of video coding and decoding, and in particular to a method, device and system for coding and decoding intra-frame prediction modes of chrominance components. Background technique [0002] In existing video image encoding and decoding technologies, in order to improve encoding efficiency, various video encoding standards introduce various intra prediction modes. For example, in the HEVC standard, there are 6 types of intra-frame prediction modes for chroma components, and each sub-block can select one of these 6 types of intra-frame prediction modes. [0003] At present, for each sub-block for which the intra-frame prediction mode has been selected, when encoding the intra-frame prediction mode adopted by the chrominance component of the sub-block, firstly, 1 bit is used to represent the chroma component of the current sub-block Whether the adopted intra prediction mode is a cross-component intra ...

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Application Information

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IPC IPC(8): H04N19/107H04N19/119H04N19/159H04N19/186H04N19/96
CPCH04N19/107H04N19/119H04N19/159H04N19/186H04N19/96
Inventor 戚兴春
Owner HANGZHOU HIKVISION DIGITAL TECH
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