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Image encoding and decoding method, encoder, decoder and storage medium

An encoder and encoding technology, applied in the field of video encoding and decoding, can solve the problems of increasing the overall time of searching and calling, reducing encoding and decoding efficiency, and large storage space, so as to ensure encoding and decoding performance, improve encoding and decoding efficiency, and reduce complexity Effect

Active Publication Date: 2021-07-02
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

[0004] However, when luminance prediction is performed in the MIP mode, the parameters used by luminance blocks of different sizes may also be different. Therefore, a large storage space is required to store a large number of parameters, and the search and call of the parameters during the prediction process is also difficult. Increases the overall time, thereby reducing the efficiency of encoding and decoding

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  • Image encoding and decoding method, encoder, decoder and storage medium
  • Image encoding and decoding method, encoder, decoder and storage medium
  • Image encoding and decoding method, encoder, decoder and storage medium

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[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific embodiments described here are only used to explain the related application, not to limit the application. It should also be noted that, for the convenience of description, only the parts related to the relevant application are shown in the drawings.

[0038] In the video image, VVC accepted the Affine Linear Weighted IntraPrediction technology (Affine Linear Weighted IntraPrediction) proposed in the Joint Video Experts Team (JVET)-N0217, and renamed it matrix-based intra prediction, That is, the MIP technology, which adds different numbers of matrix-based intra prediction modes in the process of intra-frame brightness prediction for different sizes of intra-frame brightness coding blocks.

[0039] In order to capture the finer edge d...

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Abstract

The embodiment of the invention discloses an image encoding and decoding method, an encoder, a decoder and a storage medium, and the method comprises the steps: carrying out the unified modification of initial right shift parameters corresponding to different sizes and different MIP mode numbers according to an offset parameter before the encoder carries out the encoding processing according to an MIP mode, wherein the offset parameter is used for indicating the right shift number of the predicted value; and when coding processing is carried out according to the MIP mode, performing coding processing according to the offset parameter. Before the decoder carries out decoding processing according to the MIP mode, initial right shift parameters corresponding to different sizes and different MIP mode numbers are subjected to unified modification according to the offset parameters, wherein the offset parameter is used for indicating the right shift number of the predicted value; and when decoding processing is carried out according to the MIP mode, decoding processing is carried out according to the offset parameter.

Description

[0001] This application is a PCT international patent application PCT / CN2019 / 092689 with an application date of June 25, 2019, which entered the Chinese national phase. The Chinese patent application number 201980048358.2, the title of the invention is "Image encoding and decoding method, encoder, decoder and storage medium " divisional application. technical field [0002] The embodiments of the present application relate to the technical field of video encoding and decoding, and in particular, relate to an image encoding and decoding method, an encoder, a decoder, and a storage medium. Background technique [0003] In the Versatile Video Coding (VVC) reference software test platform, a new intra-frame coding technology, Matrix-based Intra Prediction (MIP) is proposed, MIP is based on neural The intra-frame prediction technology of the network uses a multi-layer neural network to predict the brightness value of the current block based on the adjacent reconstructed brightnes...

Claims

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Application Information

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IPC IPC(8): H04N19/117H04N19/159H04N19/176H04N19/11
CPCH04N19/117H04N19/159H04N19/176H04N19/11G06F5/01H04N19/172H04N19/184H04N19/593
Inventor 万帅霍俊彦马彦卓杨付正郭锦坤王海鑫
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD