Dynamic psychovisual bit allocation for improved quality bit rate in MPEG-2 transmission over ATM links

被引：1
|
作者：
Cicalini, G
Favalli, L
Mecocci, A
机构：
[1] Dipartimento di Elettronica, Università di Pavia, 27100 Pavia
来源：
ELECTRONICS LETTERS | 1996年 / 32卷 / 04期
关键词：
asynchronous transfer mode; video signal processing; data compression;
D O I：
10.1049/el:19960263
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In ATM networks, to prevent congestion, the bandwidth allocated to a video sources can be changed to optimise the overall quality of service (QOS). In this scenario it is very important to obtain the best march between video quality and available bandwidth. The authors present a new feedback/feedforward controller, for MPEG-2 coding, that dynamically tunes the quantisation parameters by analysing the image sequence from a psychovisual point of view. The system generates images with higher quality with respect to the standard Test Model 5.
引用
收藏
页码：370 / 371
页数：2
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