A Multi-Description Video Coding Method Based on Human Visual System

A technology of human visual system and video coding, applied in the field of multi-description video coding based on human visual system, it can solve the problems of relying on source coding structure, ignoring, not taking into account the characteristics of human visual system, etc.

CN103501441BInactive Publication Date: 2016-08-17北京交通大学长三角研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a multiple-description video coding method based on a human visual system. The multiple-description video coding method includes the steps that firstly a video sequence is read in, odd-even frames of the video sequence are separated to obtain a main information odd frame sub-sequence X1 and a main information even frame sub-sequence X2; secondly, a rebuilt even frame sequence and a rebuilt odd frame sequence are obtained respectively according to a JND error forecasting mechanism, and redundant information Y2 of a path of odd frames and redundant information Y1 of a path of even frames are obtained after the even frame sequence and the odd frame sequence are processed by an encoding mode selection module; thirdly the main information X1, the main information X2, the redundant information Y1 and the redundant information Y2 are encoded respectively through a standard encoder and a redundant information encoder; fourthly, after encoding, the X1 and X2 form a description 1, the X2 and Y1 form a description 2, and the description 1 and description 2 are transmitted to an encoding end to be encoded through different channels.
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Description

technical field

[0001] The invention relates to the technical field of digital video processing, in particular to a multi-description video coding method based on the human visual system. Background technique

[0002] In recent years, with the explosive development of the Internet, video transmission has become more and more widely used. However, network congestion, random bit errors and packet loss will lead to severe degradation of video compressed data quality, which brings great challenges to video transmission. Therefore, it is necessary to develop a video codec scheme that not only has high compression efficiency but also ensures the robustness of video transmission.

[0003] As a technology that can improve the robustness of transmission over error-prone channels, multiple description coding has attracted more and more scholars to study. It can be assumed that there are many channels between the source and the sink, and it is impossible for all channels to make erro...

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Embodiment Construction

[0068] The present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0069] In order to verify the effectiveness and advancement of the method of the present invention, we use four standard video sequences with different spatial resolutions as shown in Table 1 to test the performance of the system. The method of the present invention and the method proposed in the literature (traditional method) are compared in terms of subjective video reconstruction quality (average value of PSPNR of Y component) under different conditions. For the sake of fairness, in the process of processing, both methods select the first 100 frames of each video sequence, the block size is taken as 16×16, and the redundant information takes about 10% of the main informat...