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A filtering method, filter and device for intra-frame prediction

A technology of intra-frame prediction and intra-prediction, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem of low coding efficiency

Active Publication Date: 2021-09-14
ZHEJIANG DAHUA TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide an intra-frame prediction filtering method, which can solve the technical problem of low coding efficiency

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  • A filtering method, filter and device for intra-frame prediction
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[0031] In order to make the purpose, technical solution and effect of the present application more clear and definite, the present application will be further described in detail below with reference to the accompanying drawings and examples.

[0032] The embodiments of this application can be applied to the video codec process. Specifically, it can be applied to the intra prediction process in the video coding process. It should be understood that the application scenarios of the system and method of the present application are only some examples or embodiments of the present application, and those of ordinary skill in the art can also Apply this application to other similar scenarios.

[0033] Existing intra-frame luma prediction modes include DC mode, Planar mode, Bilinear mode and angle mode, etc. In DC mode, the mean value of all available reference pixels is used as the prediction value of each point in the block to be predicted. The Planar mode is based on the positi...

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Abstract

The invention discloses a filtering method for intra-frame prediction. The intra-frame prediction filtering method includes: obtaining filtering parameters; wherein, the filtering parameters include at least one of filtering reference pixels, filtering reference values, filtering ranges, and filtering coefficients; using the filtering parameters to filter the current intra-frame prediction block . Through the above method, the present invention can adjust the filtering method according to the actual situation of the intra-frame prediction block, and select the most effective filtering method for different intra-frame prediction blocks.

Description

technical field [0001] The invention relates to the field of video coding, in particular to the field of filtering for intra-frame prediction. Background technique [0002] The purpose of video coding is to compress video data, thereby reducing video transmission traffic or storage space. The video coding system mainly includes three parts: coding, transmission and decoding. In the encoding process, by selecting the optimal intra-frame prediction mode, the redundancy between adjacent pixels in a frame of image is eliminated, and the spatial correlation between certain pixels is removed, thereby compressing the video file. In the decoding process, the optimal prediction mode calculated by the encoding end is read, and the predicted value of the predicted block is predicted in the same way. During the intra prediction process, the block to be coded is predicted to obtain the predicted block, and then the predicted block may be filtered to enhance the correlation between the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/82H04N19/86
CPCH04N19/82H04N19/86
Inventor 江东张雪方诚林聚财殷俊
Owner ZHEJIANG DAHUA TECH CO LTD
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