文章基本信息

标题：ビデオマルチキャストにおける符号化伝送制御方式
本地全文：下载
作者：酒澤茂之 ; 滝嶋康弘 ; 和田正裕等
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：1998
卷号：52
期号：6
页码：863-870
DOI：10.3169/itej.52.863
出版社：The Institute of Image Information and Television Engineers
摘要：A layered video multicast scheme using multiple channels has been getting much attention for Internet/Intranet video broadcast. In this paper, a transmission control method is analyzed for the layered coded video. This method uses temporal layer separation based on the dependency between the I, P, and B prediction modes and on the spatial layer separation by data partitioning of the DCT coefficients. In order to avoid an overflow/underflow in a receiver buffer, a transmission starting time and a stand-by duration for a decoder, before starting decode process, are given as transmission control parameters. The buffer size required for the receiver as well as the delay time due to buffering are also given. The effect of data partitioning of the I-frame on video quality is evaluated and bitrate allocation between layered video streams are considered through computer simulation to achieve an optimum quality.
关键词：マルチキャスト;階層符号化;マルチチャンネル;伝送制御;符号化制御