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A local illumination compensation prediction method, terminal equipment and computer storage medium

A technology of illumination compensation and prediction method, applied in the field of video coding and decoding, can solve the problem of low prediction accuracy of LIC model, and achieve the effect of reducing residual error, improving accuracy and reducing code stream size

Active Publication Date: 2022-04-19
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

[0004] The present application provides a local illumination compensation prediction method, terminal equipment and computer storage medium to solve the problem of low prediction accuracy of the LIC model in the prior art

Method used

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  • A local illumination compensation prediction method, terminal equipment and computer storage medium
  • A local illumination compensation prediction method, terminal equipment and computer storage medium
  • A local illumination compensation prediction method, terminal equipment and computer storage medium

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0038] This application adopts the LIC prediction method to predict the current frame based on the reference frame, wherein LIC is an inter-frame coding tool proposed to compensate the brightness difference between the reference frame and the current frame. Furthermore, LIC can be combined with various inter-frame coding modes and coding tools, such as conventional AMVP mode, conventional merge mode, MMVD mode, etc., and can be applied to luma prediction and chroma prediction.

[00...

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Abstract

The present application discloses a local illumination compensation prediction method, a terminal device and a computer storage medium. The local illumination compensation prediction method includes: dividing the current block into a plurality of sub-blocks, and the sub-blocks are divided into a first sub-block and a second sub-block block, the first sub-block is adjacent to the reference pixels of the current block, and the second sub-block is not adjacent to the reference pixels; the local illumination compensation prediction model is constructed for the first sub-block by using the reference pixels adjacent to the first sub-block, and Constructing a local illumination compensation prediction model for the second sub-block by using at least some of the reference pixels; respectively using the local illumination compensation prediction model of each sub-block to perform prediction. Through the above local illumination compensation prediction method, the present application can improve the accuracy of inter-frame prediction, reduce the residual between the predicted pixel value and the original pixel value, and further reduce the code stream size of the coding residual.

Description

technical field [0001] The present application relates to the technical field of video coding and decoding, and in particular to a local illumination compensation prediction method, terminal equipment and computer storage medium. Background technique [0002] In recent years, there has been an increasing demand for images having high resolution and high quality, such as high definition (HD) video and ultra high definition (UHD) video, in various fields. Compared with existing image data, high-resolution and high-quality image data requires a relatively huge amount of information or bit amount. Therefore, when image data is transmitted by using a medium such as an existing wired / wireless broadband line, or when image data is stored by using an existing storage medium, transmission costs and storage costs rise. To solve these problems, efficient image compression techniques can be used. [0003] In the existing image compression technology, a local illumination compensation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/186H04N19/146H04N19/52H04N19/70
CPCH04N19/176H04N19/186H04N19/146H04N19/52H04N19/70
Inventor 曾飞洋江东林聚财殷俊方诚
Owner ZHEJIANG DAHUA TECH CO LTD
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