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DVC edge information fusion method based on optical flow and block matching

A technology of optical flow information and fusion method, applied in image communication, digital video signal modification, electrical components and other directions, can solve problems such as difficulty in obtaining side information quality, and achieve the effect of improving overall coding performance and quality.

Active Publication Date: 2018-11-16
SICHUAN UNIV
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Problems solved by technology

However, the initial side information generation scheme of the MLWZ framework based on motion learning uses a motion compensation interpolation algorithm based on block matching. When the motion of the video sequence is relatively severe or the GOP is large, this method is difficult to obtain an ideal side information quality. On the one hand, the gradual update and optimization of side information is carried out on the basis of the initial side information, the higher the quality of the initial side information of the system, the better the final coding performance of the whole system will be

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  • DVC edge information fusion method based on optical flow and block matching
  • DVC edge information fusion method based on optical flow and block matching
  • DVC edge information fusion method based on optical flow and block matching

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[0028] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail, it is necessary to point out that following embodiment is only used for further description of the present invention, can not be interpreted as the restriction to protection scope of the present invention, those skilled in the art According to the content of the invention above, making some non-essential improvements and adjustments to the present invention for specific implementation shall still belong to the protection scope of the present invention.

[0029] Such as figure 2 Shown is the system block diagram of the inventive method, and concrete implementation method is:

[0030] (1) At the DVC encoding end, the original video sequence is alternately divided into WZ frames and K frames. The K frames are encoded using the traditional H.264 / AVC intra-frame encoding method. After the WZ frames are subjected to DCT transformation, quantization, and bit-pla...

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Abstract

The invention provides a DVC edge information fusion method based on optical flow and block matching, mainly relating to a WZ frame edge information generation solution of a decoding end. The traditional block matching edge information generation solution ensures high encoding quality of a video sequence moving slowly, but when a video image moves drastically or a video image group is large, the block matching algorithm cannot ensure high edge information quality. Optical flow can represent movement information of the video sequences, so that the invention provides an edge information fusion method based on optical flow and block matching. Experiment results show that the method can ensure higher edge information quality of the traditional block matching algorithm, and improves the overallrate distortion performance of the system.

Description

technical field [0001] The present invention relates to the technical problem of video coding in the field of image communication, in particular to a technology for improving the quality of side information in distributed video coding (DVC). Background technique [0002] In recent years, with the rapid development of high-tech technologies such as digital communication, multimedia technology and wireless communication, people have higher and higher requirements for video quality, such as wireless sensor networks, video conferencing, wireless surveillance video, smart phones, etc. Compared with single audio and text information, video images can provide more intuitive and rich visual information, but video images with a huge amount of data also bring certain challenges to video compression coding systems. For the new type of mobile device terminal, its common feature is that it is limited in terms of computing power, storage capacity and power consumption. Distributed Video ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/139H04N19/147H04N19/176H04N19/177H04N19/587
CPCH04N19/139H04N19/147H04N19/176H04N19/177H04N19/587
Inventor 卿粼波熊珊珊何小海王正勇荣松滕奇志熊淑华
Owner SICHUAN UNIV