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

A technology of image coding and coding blocks, which is applied in the fields of image coding methods, encoders, decoders and storage media, and decoding methods, and can solve problems such as increasing data processing delays in the encoding and decoding process, increasing computational complexity, etc.

Pending Publication Date: 2020-01-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing video and image coding methods increase the computational complexity, storage complexity and storage overhead of the encoder to determine the intra prediction process for the coded block, and increase the data processing delay in the codec process.

Method used

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

Examples

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Embodiment 1

[0192] see figure 1 , an embodiment of the present disclosure proposes an image encoding method, including:

[0193] Step 101: determine the intra prediction mode of the coding block, and construct the first predicted value of the coding block according to the intra prediction mode;

[0194] Step 102: Determine filtering parameters according to the original value of the coding block and the first predicted value, and the filtering parameters include filtering indication parameters;

[0195] The filter indication parameter includes at least one of the following: a sequence layer filter control parameter, an image layer filter control parameter, a slice layer filter control parameter, and a block layer filter control parameter.

[0196] Exemplarily, the sequence layer filtering control parameter includes at least one of the following:

[0197] One or more flag bits, the flag bits indicate whether the first prediction value of the coding block using the intra prediction mode in...

Embodiment 2

[0229] see figure 2 , an embodiment of the present disclosure proposes an image decoding method, including:

[0230] Step 201: Parse the code stream to obtain the intra prediction mode, filtering parameters and prediction difference parameters of the decoded block, and the filtering parameters include filtering indication parameters;

[0231] Wherein, parsing the code stream to obtain the filtering parameters of the decoding block includes: parsing one or more data units in the code stream to obtain filtering parameters, wherein the data unit includes at least one of the following: one or more parameter sets, slice headers, block Layer data unit.

[0232] The filter indication parameter includes at least one of the following: a sequence layer filter control parameter, an image layer filter control parameter, a slice layer filter control parameter, and a block layer filter control parameter.

[0233] Exemplarily, the sequence layer filtering control parameter includes at lea...

Embodiment 3

[0265] see image 3 , an embodiment of the present disclosure proposes an image encoding apparatus, including a first predicted value construction unit 3001, a filter parameter determination unit 3002, an intra-frame predicted value determination unit 3003, a prediction difference parameter calculation unit 3004, and an encoding unit 3005, wherein:

[0266] a first prediction value construction unit 3001, configured to determine an intra prediction mode of the coding block, and construct a first prediction value of the coding block according to the intra prediction mode;

[0267] a filter parameter determination unit 3002, configured to determine a filter parameter according to the original value of the coding block and the first predicted value constructed by the first predicted value construction unit 3001, and the filter parameter includes a filter indication parameter;

[0268] The intra-frame prediction value determining unit 3003 is configured to perform filtering proces...

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Abstract

Provided in an embodiment of the present invention is an image encoding method, comprising: determining an intra prediction mode of an encoded block, and constructing a first prediction value of the encoded block according to the intra prediction mode; determining a filtering parameter according to the original value of the coding block and the first prediction value, wherein the filtering parameter comprises a filtering indication parameter; if the filtering indication parameter indicates to perform filtering processing on the first prediction value, performing filtering processing on the first prediction value to obtain an intra-frame prediction value; calculating a prediction difference parameter according to the difference between the original value of the coding block and the intra-frame prediction value; and encoding the intra-frame prediction mode, the filtering parameter and the prediction difference parameter, and writing encoding bits into a code stream. The invention furtherprovides an image decoding method, an encoder, a decoder and a computer storage medium.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to an image encoding method, a decoding method, an encoder, a decoder and a storage medium. Background technique [0002] Compression coding techniques for digital video and image use the correlation between pixel values ​​in video and image to remove redundancy existing in video and image. Among them, the compression coding technology includes intra-frame prediction (Intra Prediction) and inter-frame prediction (Inter Prediction). Specifically, intra-frame prediction uses the spatial correlation between the sample values ​​of adjacent pixels in the image, and uses adjacent coded pixels to predict the pixels to be coded, thereby reducing the correlation between adjacent pixels in the spatial domain. redundancy. Inter-frame prediction not only uses the correlation between adjacent pixels in the spatial domain in a single frame image, but also uses the correlat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/593H04N19/117H04N19/147H04N19/176H04N19/124H04N19/91
CPCH04N19/593H04N19/117H04N19/147H04N19/176H04N19/124H04N19/91H04N19/11H04N19/82H04N19/46H04N19/157H04N19/159H04N19/80
Inventor 李明
Owner ZTE CORP
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