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Video encoding method, video decoding method and related device

A technology of video coding and equipment, applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems of information redundancy and high proportion of I-frame compressed data

Active Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the HEVC standard, independently encoded I-frames have a high proportion of compressed data and there is a large amount of information redundancy

Method used

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  • Video encoding method, video decoding method and related device
  • Video encoding method, video decoding method and related device
  • Video encoding method, video decoding method and related device

Examples

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example 1

[0362] First, the encoding device reconstructs the multiple frame sub-blocks to obtain the representation coefficient of each frame sub-block in the multiple frame sub-blocks and the reconstruction residual of each frame sub-block.

[0363] Among them, the representation coefficient represents the corresponding relationship between the frame sub-block and the target frame sub-block, the target frame sub-block is an independent frame sub-block in multiple frame sub-blocks, and the independent frame sub-block is not based on other frame sub-blocks in multiple frame sub-blocks The frame sub-block is obtained by reconstructing the frame sub-block, and the reconstruction residual is used to represent the difference between the target frame sub-block and the frame sub-block.

[0364] Then, the encoding device combines a plurality of target frame sub-blocks indicated by coefficients to obtain scene features, and the target frame sub-blocks are scene feature bases.

[0365] That is, i...

example 2

[0395] First, the decoding device reconstructs a plurality of frame sub-blocks to obtain scene features and a representation coefficient of each frame sub-block in the plurality of frame sub-blocks. The scene feature base included in the scene feature is an independent feature block in the feature space, and the independent feature block is a feature block that cannot be reconstructed from other feature blocks in the scene feature.

[0396] Then, the decoding device calculates the reconstruction residual of each sub-block of each frame according to the reconstruction residual of each frame of sub-block and the data reconstructed from the scene feature and each frame of sub-block.

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Abstract

The invention discloses a video encoding method, a video decoding method and a related device, and aims at improving the compression efficiency of video frames. The method in the embodiments of the present invention comprises that a plurality of video frames are acquired, and redundant image content data exists between each of the plurality of video frames; the plurality of video frames are reconstructed to obtain scene information and a reconstruction residual of each video frame, the scene information comprises data obtained by reducing the redundancy of the redundant data, and the reconstruction residual is used to represent a difference between the video frame and the scene information; and predictive encoding is carried out on the scene information and reconstruction residuals respectively to obtain scene feature predictive encoding data and residual predictive encoding data. Thus, the redundancy between video frames is reduced, and a volume of data obtained after compression is reduced. Furthermore, each video frame is reconstructed into scene features and a reconstruction residual. Reconstruction residuals are encoded based on residual encoding, producing a small volume of encoded data and a high compression ratio. In this way, the method of the embodiments of the present invention can effectively improve the compression efficiency of video frames.

Description

technical field [0001] The present invention relates to the field of video frame processing, in particular to a video encoding method, a video decoding method, a video encoding device, a video decoding device, and a video encoding and decoding device. Background technique [0002] With the continuous development of technologies such as the Internet and streaming media, digital video has been widely used in various terminal devices, such as traditional PCs, smart phones, tablet computers, Internet Interactive Television (IPTV) and so on. On the other hand, people's sensory needs are also constantly improving, and the demand for high-definition video and ultra-high-definition video is also increasing. The continuous improvement of these video standards and resolution requirements will inevitably bring about a very huge transmission bit rate (Bit Rate). Therefore, in the context of large video, high-quality video compression is required to reduce the burden of network transmis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/503H04N19/593H04N19/85H04N19/179H04N19/61H04N19/625H04N19/124
CPCH04N19/124H04N19/179H04N19/503H04N19/593H04N19/61H04N19/625H04N19/85
Inventor 吴国星林灿榕
Owner HUAWEI TECH CO LTD
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