A Real-Time Low-Rate Video Compression Algorithm Using Multi-Stage Hierarchical Vector Quantization (Special Section on VLSI for Digital Signal Processing)
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概要
- 論文の詳細を見る
We propose a real-time low-rate video compression algorithm using fixed-rate multi-stage hierarchical vector quantization. Vector quantization is suitable for mobile computing, since it demands small computation on decoding. The proposed algorithm enables transmission of 10 QCIF frames per second over a low-rate 29.2 kbps mobile channel. A frame is hierarchically divided by sub-blocks. A frame of images is compressed in a fixed rate at any video activity. For active frames, large sub-blocks for low resolution are mainly transmitted. For inactive frames, smaller sub-blocks for high resolution can be transmitted successively after a motion-compensated frame. We develop a compression system which consists of a host computer and a memory-based processor for the nearest neighbor search on VQ. Our algorithm guarantees real-time decoding on a poor CPU.
- 社団法人電子情報通信学会の論文
- 1999-02-25
著者
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小野寺 秀俊
京都大学工学部電子工学科
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Kobayashi K
Toyama Prefectural Univ. Toyama‐ken Jpn
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Onodera H
Kyoto Univ. Kyoto‐shi Jpn
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Onodera Hidetoshi
Kyoto Univ. Kyoto‐shi Jpn
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小野寺 秀俊
滋賀県立大学工学部
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Kobayashi Kazutoshi
Graduate School Of Informatics Kyoto University
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Onodera Hidetoshi
Graduate School Of Informatics Kyoto University
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Kobayashi Kensuke
The Author Is With Lecroy Corp.
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小野寺 秀俊
京都大学大学院工学研究科電子通信工学専攻
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TAMARU Keikichi
Okayama University of Science
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TERADA Kazuhiko
Graduate School of Informatics, Kyoto University
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TAMARU Keikichi
Graduate School of Informatics, Kyoto University
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Kobayashi K
The Author Is With Lecroy Corp.
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Tamaru K
Okayama University Of Science
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