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Video decoding method, encoding method, codec and storage device

A video decoding and video encoding technology, applied in the field of encoding and decoding, can solve problems such as large code stream length, low decoding efficiency at the decoding end, and limited application of conversion modes, and achieve the effect of improving decoding complexity and improving decoding efficiency

Active Publication Date: 2021-03-23
ZHEJIANG DAHUA TECH
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Problems solved by technology

The existing inter-frame transformation usually traverses the selectable inter-frame transformation modes, and selects the transformation mode with the least cost as the best transformation mode, and the existing inter-frame transformation mode is only used for inter-frame prediction transformation, resulting in a large code stream length, The application of transformation mode is limited; the decoding efficiency of the decoder is low

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  • Video decoding method, encoding method, codec and storage device
  • Video decoding method, encoding method, codec and storage device
  • Video decoding method, encoding method, codec and storage device

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Embodiment Construction

[0020] 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.

[0021] The present disclosure provides a method for encoding and decoding. The subject of the method of encoding is the encoding end, and the subject of the method of decoding may be the decoding end, wherein the encoding end or the decoding end can be a server, a computer, Devices such as mobile phones that encode and / or decode video data.

[0022] Before implementation, first explain the concepts that may be involved in the embodiments of the present disclosure: video coding mainly includes prediction, transformation, quantization, and entropy coding, and video decoding mainly includes entropy decoding, inverse quantization, and inverse transformation. .

[0023] Intra-frame prediction: During intra-frame prediction, a video frame is...

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Abstract

The invention relates to the technical field of encoding and decoding, in particular to a video decoding method, an encoding method, a codec, and a storage device; the video decoding method comprises:acquiring a code stream of a current block; obtaining a first number from the code stream of the current block, the first number being the number of non-zero coefficients in the coding coefficient ofthe current block; and judging whether the sub-block transformation related syntax elements need to be analyzed or not according to a preset rule and the first number of parity. According to the video decoding method provided by the embodiment of the invention, the decoding efficiency can be improved.

Description

technical field [0001] The present invention relates to the field of codec technology, in particular to a video decoding method, an encoding method, a codec and a storage device. Background technique [0002] Because the amount of video image data is relatively large, it is usually necessary to compress the video pixel data (RGB, YUV, etc.), thereby reducing the amount of video data. The compressed data is called a video code stream. The video code stream is transmitted to the client through a wired or wireless network, and then decoded and viewed, which can achieve the purpose of reducing network bandwidth and storage space during the transmission process. [0003] The entire video coding system is mainly divided into video acquisition, prediction, transform quantization, and entropy coding. The prediction is divided into two parts: intra prediction and inter prediction. They are respectively to remove the redundancy of the video image in space and time. The intra-frame p...

Claims

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Application Information

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IPC IPC(8): H04N19/109H04N19/503H04N19/176H04N19/625H04N19/18
CPCH04N19/109H04N19/503H04N19/176H04N19/18H04N19/625
Inventor 洪珠江东林聚财殷俊
Owner ZHEJIANG DAHUA TECH
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