Low Bit-Rate Video Coding Based on Seamless Combination of Motion Compensation and Matching Pursuits (マルチメディア情報処理,映像表現,ネットワーク映像メディア,画像情報システム 第4回International Workshop on Advanced Image Technology (IWAIT2002))
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概要
- 論文の詳細を見る
This paper proposes a novel video coding scheme based on combination of motion compensation and wave form coding. In order to realize appropriate bit-allocation to both motion compensation and wave form coding, we employ a waveform coding algorithm called matching pursuits which can freely control a coding rate of motion compensated frame differences. Moreover we develop an iterative motion compensation method which can successively improve quality of reconstructed images, and combine it with the above matching pursuits seamlessly and adaptively. In other words, motion compensation and matching pursuits are carried out repeatedly in the order of decreasing coding efficiency. Simulation results indicate that the proposed coding scheme shows SNR gains of 0.5-1.3 dB over the H.263 standard for typical QCIF sequences.
- 社団法人映像情報メディア学会の論文
- 2002-01-18
著者
-
Itoh Susumu
Department Of Electrical Engineering Faculty Of Science And Technology Science University Of Tokyo
-
Matsuda Ichiro
Department Of Electrical Engineering Faculty Of Science And Technology Science University Of Tokyo
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