Method and device for determining sampling point self-adaptive compensation mode of tree coding block

A sampling point adaptive and determining method technology, applied in the field of video image coding, can solve the problem that the encoder consumes a lot of time, and achieve the effect of reducing the number of times

Active Publication Date: 2021-07-02
SHANGHAI BILIBILI TECH CO LTD
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Problems solved by technology

[0005] In view of this, a method, device, computer equipment, and computer-readable storage medium for determining a sample point adaptive compensation mode of a tree-shaped coding block are now provided to solve the problem that the existing SAO technology needs to perform 17 times of pixel compensation when compensating pixels. level processing, resulting in a problem that takes a lot of time in the encoder

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  • Method and device for determining sampling point self-adaptive compensation mode of tree coding block
  • Method and device for determining sampling point self-adaptive compensation mode of tree coding block
  • Method and device for determining sampling point self-adaptive compensation mode of tree coding block

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[0057] The advantages of the present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0058] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0059] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singula...

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Abstract

The invention discloses a method and a device for determining a sampling point adaptive compensation mode. The method comprises the following steps: acquiring a motion vector contained in a first tree coding block, and acquiring a reference frame of a video frame of the first coding block; acquiring a video resolution and a frame rate, calculating a threshold value according to the video resolution and the frame rate, and judging whether the motion vector is greater than the threshold value or not according to a preset rule; if not, determining a second tree coding block according to the motion vector; sequentially calculating a first probability that coding blocks in the preset direction of all second codes start a sampling point self-adaptive compensation mode, and calculating a second probability that all coding blocks in the preset direction of the first coding block start a compensation mode; determining whether the compensation mode is credible according to the first probabilities and the second probabilities; and if yes, obtaining compensation modes of all the second coding blocks, and using all the obtained types of compensation modes as the compensation modes of the first tree coding block. The time consumed in the encoding process can be reduced.

Description

technical field [0001] The present application relates to the technical field of video image coding, in particular to a method and a device for determining a sample point adaptive compensation mode of a tree-shaped coding block. Background technique [0002] HEVC (High Efficiency Video Coding) is a video compression standard. In the prior art, after HEVC is used to compress the video, in order to reduce the distortion between the reconstructed image and the original image, SAO (Sample Adaptive Offset, Sample Adaptive Offset, Compensation) technology performs pixel compensation on the reconstructed image. [0003] When the SAO technology is used to compensate the pixels, the pixel compensation will be realized through the EO (Edge Offset, boundary compensation) mode or the BO (Band Offset, side band compensation) mode. Among them, when implementing pixel compensation in BO mode, it is necessary to count the BO information of each Coding Tree Block (CTB); when implementing pi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/96H04N19/513H04N19/55H04N19/567
CPCH04N19/96H04N19/513H04N19/55H04N19/567H04N19/117H04N19/139H04N19/157H04N19/176H04N19/167
Inventor 李晓波叶天晓
Owner SHANGHAI BILIBILI TECH CO LTD
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