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Loop filtering method for video decoding and decoding device

A video decoding and loop filtering technology, applied in the field of video decoding, can solve the problem of limited access timing and decoding order

Pending Publication Date: 2021-02-02
ALICORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since deblocking filtering requires pixel data in adjacent blocks, the pixel data in the same DB needs to be accessed multiple times, and the access timing is limited by the decoding sequence based on raster scanning, which affects the data transmission frequency of the internal memory. Width and storage capacity cause a certain degree of pressure

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  • Loop filtering method for video decoding and decoding device
  • Loop filtering method for video decoding and decoding device
  • Loop filtering method for video decoding and decoding device

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Embodiment Construction

[0046] Reference will now be made in detail to the present exemplary embodiments, examples of which are illustrated in the accompanying drawings. In addition, wherever possible, elements / members using the same reference numerals in the drawings and embodiments represent the same or similar parts.

[0047] figure 1 It is a schematic diagram of a decoding device for video decoding according to an embodiment of the present invention. Please refer to figure 1 , the decoding device 10 for video decoding may include an entropy decoding module 110, an inverse quantization module 120, an inverse transform module 130, an intra prediction module 140, an inter prediction module 150, a reference image cache 160, a summer 170, and a loop Road filtering module 180.

[0048] The entropy decoding module 110 of the video decoding device 10 performs entropy decoding on the code stream to generate quantized coefficients and some syntax elements, and forwards the quantized coefficients and the...

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Abstract

The invention discloses a loop filtering method for video decoding and a decoding device. The method comprises the following steps of writing pixels of a first image block into a plurality of storageblocks of an internal memory; reading pixels of the first image block and adjacent pixels of the first image block from the internal memory to perform deblocking filtering and sample adaptive offset filtering for the first image block; outputting a part of pixels of the first image block from the internal memory to release a plurality of corresponding release storage blocks; writing a part of pixels of the second image block into the release storage block and writing the other part of pixels of the second image block into a plurality of storage blocks of the internal memory; reading the pixelsof the second image block and the adjacent pixels of the second image block from the internal memory so as to perform deblocking filtering and sample adaptive offset filtering on the second image block;.

Description

technical field [0001] The present invention relates to video decoding technology, and in particular to a video decoding loop filtering method and decoding device. Background technique [0002] With the development and spread of hardware capable of reproducing and storing high-resolution or high-definition video content, video codecs for efficiently encoding or decoding high-resolution or high-definition video content are increasingly required. Standards such as AVS2 have been established and actively used in video codecs to achieve high compression efficiency and high image quality. AVS2 can support high-efficiency compression of ultra-high resolution (above 4K), high dynamic range video. [0003] The loop filter module is one of the important components of the AVS2 codec algorithm. One of its main functions is to smooth the image due to motion compensation, transformation and quantization based on block processing and false boundaries, reducing image block effects. Based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/182H04N19/423H04N19/82
CPCH04N19/176H04N19/182H04N19/423H04N19/82
Inventor 冯梦豪
Owner ALICORP