Multi-viewpoint multi-description video encoding method based on data reusing

A multi-viewpoint video and video encoding and decoding technology, which is applied in the field of video communication and multi-viewpoint multi-description video coding, can solve problems such as high computational complexity, complex predictive coding structure, and huge amount of multi-viewpoint video data, so as to reduce redundancy , Improve the effect of coding efficiency

Active Publication Date: 2014-01-22
HUAQIAO UNIVERSITY
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Problems solved by technology

[0003] Although error control technology has been widely used in 2D video coding, due to the huge amount of multi-view video data, complex predictive coding structure, and high computational complexity, if the existing error recovery coding technology is used, the coding complexity will be further increased. and redundancy
Since the error concealment te

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  • Multi-viewpoint multi-description video encoding method based on data reusing
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[0033] Such as figure 1 , figure 2 As shown, the present invention proposes a multi-view and multi-description video coding and decoding method based on data reuse, in which,

[0034] At the encoding end, the following steps are implemented for each Group of Picture (GOP) of the input multi-view video:

[0035] Step 11. Perform horizontal down-sampling and vertical down-sampling on each frame of each viewpoint of the input multi-view video image group to obtain F with the same resolution 1p ,F 1d ,F 2p ,F 2d Four sub-frames, and then divide the F of each viewpoint 1p , F 1d , F 2p And F 2d Combine in frame order to form four video sub-sequences of the viewpoint V 1p ,V 1d ,V 2p And V 2d ; Then put the video subsequence V of each viewpoint 1p As a multi-view video subsequence X 1p The current image group of each view point V 1d As a multi-view video subsequence X 1d The current image group of each view point V 2p As a multi-view video subsequence X 2p The current image group of each...

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Abstract

The invention discloses a multi-viewpoint multi-description video encoding-decoding method based on data reusing. According to the characteristics that four subsequences which are produced by spatial horizontal and perpendicular sampling according to multi-viewpoint video sequences are extremely close, every two of the four subsequences are combined to form two descriptions, one subsequence in each description is directly encoded by a standard multi-viewpoint video encoder during encoding, and prediction encoding is carried out on each macro block in the other subsequence in each description in three different data reusing modes according to the different properties of the macro block. The method provided by the invention is simple and easy to realize. Under the condition of improving the fault-tolerant capability of multi-viewpoint video encoding, high encoding efficiency is kept, and encoding calculation complexity is greatly reduced.

Description

technical field [0001] The invention relates to the field of video coding and decoding in video communication, in particular to a multi-viewpoint and multi-description video coding method based on data reuse, which can be applied to video communication in unreliable channels. Background technique [0002] With the advent of the mobile broadband 4G era, the Internet and wireless channels will become the main transmission channels for multi-viewpoint video. Data errors in wireless channel transmission, excessive delay in data arrival time and packet loss caused by channel interference in the Internet, network congestion and routing delay will seriously affect the reconstruction quality of multi-view video images. The existing multi-view video coding (Multi-view Video Coding, MVC) standard adopts the inter-view / temporal hybrid prediction structure based on hierarchical B frames proposed by HHI, which not only uses intra-frame and intra-view inter-frame prediction , and inter-v...

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Application Information

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IPC IPC(8): H04N13/00H04N19/50H04N19/177H04N19/176
Inventor 蔡灿辉王小兰陈婧
Owner HUAQIAO UNIVERSITY
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