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IBC mode-based transformation method and device, IBC mode-based coding method and device, electronic equipment and storage medium

A mode and coding technology, applied in the field of video coding, can solve problems affecting the coding compression rate and achieve the effect of improving the compression rate

Active Publication Date: 2021-03-26
ZHEJIANG DAHUA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]It only considers the case of discrete cosine transform and the case of implicit skip transform, which affects the compression rate of the encoding in IBC mode

Method used

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  • IBC mode-based transformation method and device, IBC mode-based coding method and device, electronic equipment and storage medium
  • IBC mode-based transformation method and device, IBC mode-based coding method and device, electronic equipment and storage medium
  • IBC mode-based transformation method and device, IBC mode-based coding method and device, electronic equipment and storage medium

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Embodiment Construction

[0032] 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.

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] See figure 1 , is a schematic flow chart of the first embodiment of the transformation method based on the IBC mode of the present invention, including:

[0035] Step S11: Transform the current block using multiple transformation methods, the current block adopts intra-frame block copy, and the transformation methods include primary transformation a...

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Abstract

The invention provides an IBC mode-based transformation method and device, an IBC mode-based coding method and device, electronic equipment and a storage medium, and the method comprises the steps: employing a plurality of transformation methods to transform a current block, employing intra-frame block copying for the current block, and enabling the transformation methods to comprise primary transformation and / or secondary transformation and / or sub-block transformation; and selecting the transformation method with the minimum cost as the final transformation method of the current block. Therefore, the compression ratio in the IBC mode is improved.

Description

technical field [0001] The present invention relates to the technical field of video encoding, in particular to an IBC-based mode conversion, encoding method, device, electronic equipment and storage medium. Background technique [0002] The transformation method under the existing IBC (Intra Block Copy, intra-frame block copy) mode is: judge whether the current block meets the condition of implicit skip transformation, if so, then traverse the case of discrete cosine transformation and implicit In the case of skipping the transformation, select the transformation type with the least cost; if the condition of implicit skipping transformation is not satisfied, only the row and column of the current block are subjected to discrete cosine transformation. [0003] It only considers the case of discrete cosine transform and the case of implicit skip transform, which affects the compression rate of coding in IBC mode. Contents of the invention [0004] The invention provides an...

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Application Information

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IPC IPC(8): H04N19/12H04N19/176H04N19/18H04N19/593H04N19/61H04N19/625
CPCH04N19/12H04N19/176H04N19/18H04N19/61H04N19/625H04N19/593H04N19/157
Inventor 江东洪珠陈秀丽林聚财殷俊
Owner ZHEJIANG DAHUA TECH
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