Coding method and apparatus

A coding unit and video decoding technology, applied in the field of communication, can solve the problem of video size becoming a problem

Pending Publication Date: 2020-06-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the video can also be an issue when storing the video on a storage device due to potentially limited memory resources

Method used

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  • Coding method and apparatus
  • Coding method and apparatus
  • Coding method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0574] Example 1. A method implemented in a computing device, comprising:

[0575] receiving a bitstream at a processor side of the computing device, the bitstream being stored in a memory of the computing device and received by a receiver of the computing device;

[0576] receiving a prediction block and a corresponding transformed residual block from the bitstream at the processor side;

[0577] the processor determines a type of spatial varying transform (SVT) transform used to generate the transformed residual block;

[0578] the processor determines a position of the SVT transform relative to the transformed residual block;

[0579] the processor performs an inverse transform of the SVT transform on the transformed residual block to reconstruct a reconstructed residual block;

[0580] The processor combines the reconstructed residual block with the prediction block to reconstruct an image block for display on a display.

example 2

[0581] Example 2. The method according to example 1, wherein the type of the SVT transformation is a vertical SVT (SVTvertical, SVT-V) type or a horizontal SVT (SVT horizontal, SVT-H) type, and the SVT-V The type includes: the height is equal to the height of the transformed residual block, and the width is half the width of the transformed residual block; the SVT_H type includes: the height is half the height of the transformed residual block, and the width is equal to the Transform the width of the residual block.

example 3

[0582] Example 3. The method according to example 1 or 2, wherein the type of the SVT transformation is determined by parsing the svt_type_flag from the bit stream.

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Abstract

The present disclosure discloses a video decoding method, including: parsing a received bitstream to obtain prediction information of a CU; obtaining a target transform mode of a residual TU; parsingthe received bitstream to obtain transform coefficients of the residual TU; applying an inverse quantization to the transform coefficients of the residual TU to obtain dequantized coefficients; applying, based on the target transform mode, an inverse transform to the dequantized coefficients to obtain a residual block of the residual TU; obtaining a prediction block of the CU based on the prediction information; and obtaining a video block based on the residual block and the prediction block; and outputting a video sequence, the video sequence including a video frame that includes the video block.

Description

[0001] This application requires US Patent Application No. 62634613 submitted to the US Patent Office on February 23, 2018, US Patent Application No. 62678738 submitted to the US Patent Office on May 31, 2018, and US Patent Application No. U.S. Patent Application No. 62572987 and priority of PCT / CN2018 / 102524 filed with China Patent Office on August 27, 2018. The disclosures of the aforementioned applications are incorporated herein by reference in their entirety. technical field [0002] The present invention relates to the communication field, in particular to an encoding method and device. Background technique [0003] Large amounts of video data need to be described even in the case of short films, which can cause difficulties when the data is to be sent or otherwise transmitted over communication networks with limited bandwidth capacity. Therefore, video data is usually compressed before being transmitted over modern telecommunications networks. Since memory resources...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/44
CPCH04N19/61H04N19/44H04N19/176H04N19/625H04N19/157H04N19/124H04N19/119H04N19/12H04N19/136H04N19/122H04N19/18H04N19/184H04N19/51
Inventor 赵寅杨海涛陈建乐
Owner HUAWEI TECH CO LTD
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