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Video image coding and decoding method, device, electronic device and storage medium

A coding method and video image technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of high video coding and decoding bit rate, and achieve the effect of reducing calculation amount, reducing bit rate, and improving quality

Active Publication Date: 2022-04-05
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, using the above method, the code rate in the process of video encoding and decoding is very large.

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  • Video image coding and decoding method, device, electronic device and storage medium
  • Video image coding and decoding method, device, electronic device and storage medium
  • Video image coding and decoding method, device, electronic device and storage medium

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0063] First, explain the terms in the embodiments of this application:

[0064] Key Frame: An end-to-end video compression method based on frame interpolation, which divides all frames of a video into multiple groups in chronological order, and each group contains n frames of images. Typically, the first and last frames of each group are selected as keyframes. The compression of key frames often adopts the way of image compression. Image compression can be traditional image compr...

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Abstract

The embodiment of the present application provides a video image encoding and decoding method, device, electronic equipment, and storage medium, using the same optical flow field to perform motion compensation on two key frames, and directly generate an interpolated image, which can reduce compression compared with the prior art An optical flow field, while reducing the amount of calculation, can also save the bit rate of motion information compression, thereby improving the rate-distortion performance of compression. And in order to obtain a higher residual compression performance, the quality correction network is used to improve the quality of the interpolated image; before residual compression, the original image and the corrected interpolated image are subjected to feature transformation using feature transformation, and the residual is calculated on the transformed domain. Poor and compressed, can reduce the code rate of residual compression.

Description

technical field [0001] The present application relates to the technical field of digital signal processing, in particular to a video image encoding and decoding method, device, electronic equipment and storage medium. Background technique [0002] At present, video traffic has reached 80% of the entire Internet traffic, and this value is likely to increase further in the future. Therefore, how to efficiently encode and decode video and achieve better visual quality in a given bandwidth becomes more and more critical. [0003] Traditional video encoding and decoding algorithms mainly rely on manually designing different modules, such as block-based motion estimation and DCT (Discrete Cosine Transform, discrete cosine transform) matrix, to reduce redundancy in video sequences. Among them, although each module is carefully designed, it is not end-to-end optimization as a whole. In order to further improve the performance of video codec, it is worth trying to optimize the whol...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/13H04N19/147H04N19/463H04N19/567H04N19/91
CPCH04N19/13H04N19/147H04N19/463H04N19/567H04N19/91
Inventor 林超逸陈方栋王莉
Owner HANGZHOU HIKVISION DIGITAL TECH