quantization parameter cascading method independent of a GOP structure

A quantization parameter and cascade technology, applied in the field of video coding, can solve the problem of poor flexibility of the encoder, and achieve the effect of ensuring the coding performance

Active Publication Date: 2019-05-28
FUZHOU UNIV
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Problems solved by technology

[0003] Most of the existing algorithms rely on the hierarchical coding structure of GOP, which leads to th

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  • quantization parameter cascading method independent of a GOP structure
  • quantization parameter cascading method independent of a GOP structure
  • quantization parameter cascading method independent of a GOP structure

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[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0037] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to a quantization parameter cascading method independent of a GOP structure, and the method comprises the steps: firstly, building an inter-frame distortion dependence model independent of the GOP structure through the research of a reference specific gravity relation between frames in coding; secondly, selecting proper parameters, and obtaining a coefficient of the distortion dependence model by using a neural network; and finally, on the basis of the principle of minimum coding overall rate distortion cost, realizing a quantization parameter distribution scheme by utilizing neural network output, and distributing an optimal quantization parameter to each video frame. According to the invention, the coding performance can be ensured on the premise that the coding process does not depend on a GOP structure.

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to a quantization parameter cascading method independent of GOP structure. Background technique [0002] The video encoding method refers to the method of converting a video format file into another video format file through a specific compression technology. Video compression technology is the premise of computer processing video. After the video signal is digitized, the data bandwidth is very high, usually above 20MB / s, so it is difficult for the computer to store and process it. Using compression technology usually reduces the data bandwidth to 1-10MB / sec, so that the video signal can be stored in the computer and processed accordingly. [0003] Most of the existing algorithms rely on the hierarchical coding structure of GOP, which leads to the need to redesign the algorithm for different structures, which makes the flexibility of the encoder poor. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): H04N19/124H04N19/147H04N19/177
Inventor 徐艺文伊世奇赵铁松房颖林丽群
Owner FUZHOU UNIV
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