Bit-rate control algorithm on video packet coding and its characteristics

被引：0
|
作者：
Tanaka, Tomoaki [1 ]
Haseyama, Hiroshi [1 ]
Manabe, Katsutoshi [1 ]
Kishino, Fumio [1 ]
机构：
[1] NTT Human Interface Lab, Yokosuka, Japan
来源：
Signal Processing: Image Communication | 1991年 / 3卷 / 04期
关键词：
Computer Networks - Local Area Networks - Mathematical Techniques - Algorithms - Signal Processing - Video Signals;
D O I：
10.1016/0923-5965(91)90038-4
中图分类号：
学科分类号：
摘要：
A bit-rate control method based on a hybrid coding algorithm is proposed for packet video coding. Three types of bit-rate control modes, the constant bit-rate mode, the average bit-rate control mode and the free bit-rate mode, are investigated. According to the opinion test the latter two modes have an advantage in video quality over the constant bit-rate mode. A teleconference terminal, which includes this video codec, audio codec and packet adaptor, is implemented in actual hardware on High-speed Packet Switching system. On this system, video information are transmitted in UI frame (a packet format in X.25 protocol) at 64 K approximately 800 Kbit/s.
引用
收藏
页码：321 / 331
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