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Image signal encoding/decoding method and apparatus therefor

A video decoding and video encoding technology, which is applied in digital video signal modification, image communication, electrical components, etc., can solve the problem of increasing data volume and achieve the effect of efficient encoding/decoding

Pending Publication Date: 2021-06-11
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest problem with high-definition video services is that the amount of data has increased significantly. In order to solve this problem, research to increase the video compression rate is actively being carried out

Method used

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  • Image signal encoding/decoding method and apparatus therefor
  • Image signal encoding/decoding method and apparatus therefor
  • Image signal encoding/decoding method and apparatus therefor

Examples

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Embodiment Construction

[0068] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0069] Video encoding and decoding are performed in units of blocks. For example, encoding / decoding processing such as transformation, quantization, prediction, in-loop filtering, or reconstruction may be performed on a coding block, a transform block, or a prediction block.

[0070] Hereinafter, a block to be encoded / decoded is referred to as a "current block". For example, a current block may represent an encoded block, a transformed block or a predicted block, depending on the current encoding / decoding process step.

[0071] Also, the term 'unit' used in this specification denotes a basic unit for performing a specific encoding / decoding process, and 'block' may be understood to mean a sample array of a predetermined size. Unless otherwise stated, "block" and "unit" are used interchangeably. For example, in embodiments described later, a coding block and ...

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Abstract

An image decoding method according to the present invention comprises the steps of: generating a merge candidate list of a current block; specifying any one of a plurality of merge candidates included in the merge candidate list; on the basis of a first affine seed vector and a second affine seed vector of the specified merge candidate, inducing a first affine seed vector and a second affine seed vector of the current block; using the first affine seed vector and the second affine seed vector of the current block, inducing an affine vector regarding a sub-block in the current block; and on the basis of the affine vector, performing motion compensation prediction regarding the sub-block.

Description

technical field [0001] The present invention relates to a video signal encoding / decoding method and an apparatus for said method. Background technique [0002] With the trend of larger and larger display panels, video services with higher image quality are gradually required. The biggest problem with high-definition video services is that the amount of data has increased significantly. In order to solve this problem, research to increase the video compression rate is actively being carried out. As a representative example, in 2009, the Motion Picture Experts Group (MPEG) and the Video Coding Experts Group (Video Coding Experts Group) of the International Telecommunication Union-Telecommunications (ITU-T), VCEG) established JCT-VC (Joint Collaborative Team on Video Coding). JCT-VC proposed the video compression standard HEVC (High Efficiency Video Coding) and was approved on January 25, 2013. Its compression performance is about twice that of H.264 / AVC. With the rapid deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/503H04N19/18H04N19/129H04N19/70H04N19/119H04N19/176H04N19/122H04N19/50H04N19/61H04N19/103
CPCH04N19/159H04N19/52H04N19/82H04N19/96H04N19/103H04N19/119H04N19/122H04N19/129H04N19/132H04N19/176H04N19/18H04N19/50H04N19/503H04N19/593H04N19/61H04N19/70H04N19/91
Inventor 李培根
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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