19-13 VIDEOPHONE WITH HIGH COMPRESSION RATE CODING
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概要
- 論文の詳細を見る
Several coding techniques are discussed which aims at reducing the transmission bit rate of moving pictures of videophone to that of a digital baseband of 64kbps. Since 1984,we've studied on interframe and intraframe coding such as block coding, vector quantization, DCT and DPCM, and also many kinds of adaptive techniques. Through computer simulation, satisfactory results are obtained. An expermental systems based on DPCM has been made in our lab in June 1988. The system given acceptible picture quality at 144kbps for scense with moderate motion. In this paper, the above methods and our research results will be discussed. We hope to draw helpful conclusions.
- 一般社団法人映像情報メディア学会の論文
- 1989-07-25