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Research on the Technique of the Side Information in Distributed Video Coding

Author: WangDi
Tutor: CaoXueHong
School: Nanjing University of Posts and Telecommunications
Course: Signal and Information Processing
Keywords: Distributed Video Coding Side information Motion compensation Frame loss recovery Boundary matching
CLC: TN919.81
Type: Master's thesis
Year: 2012
Downloads: 25
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Distributed Video Coding (Distributed Video Coding) encoding low complexity encoding side, less energy consumption , fault-tolerant performance , especially for low computing power and memory capacity , and power consumption constrained wireless video terminal . In a distributed video coding system , the side information, the side information (Side Information) is particularly important , and it can directly affect the rate distortion performance of the distributed video coding and compression efficiency . This paper focuses on distributed video coding side information structure . This paper describes the basic principles of video coding , describes several typical distributed video coding scheme , and then analyze the estimation method and the method of edge information , research and time algorithm based on the combination of space produce side information algorithm. On this basis , this paper presents the use of traditional video encoding frame loss recovery algorithm to generate side information generation algorithm based on block matching motion compensation reckoning compared with the traditional frame , not only the peak of the side information SNR, but also a good improvement of the block effect of the image . In the same time, we also propose the corresponding block-based trajectory transform the edge information updated program using the conic function and exponential function instead of a linear function and make simulation experiments . The results of experiments conducted with different video sequences showed that the use of the updated algorithm generates a better picture quality , fewer decoding Checksum needs to be transmitted from the encoding side , thereby improving the overall system performance .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
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