文章基本信息

标题：統合的時空間制御による超低ビットレート動画像符号化方式
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作者：宮地悟史 ; 松本修一
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：1997
卷号：51
期号：10
页码：1706-1714
DOI：10.3169/itej.51.1706
出版社：The Institute of Image Information and Television Engineers
摘要：The conventional quantization control method, in which the buffer memory status is fed back to quantizer, is not the best method for very low bit-rate video applicable to picture communications on the ISDN or the PHS network. This is because it mainly depends on the number of bits previously spent and it causes the picture degradation. In this paper, a new video coding method with spatiotemporal control at pre-processor and adaptive quantization control at coding-engine is proposed. This method enables synthetic control, which consists of estimation of the picture characteristic before encoding and feedback of the number of bits spent by the picture. Details of the synthetic control method and the coding scheme are described, and the performance of this system is discussed.
关键词：超低レート符号化;統合的時空間制御;可変フレームレート;動き検出背景分離;適応量子化制御