Usage parameter control schemes for improving MPEG video quality over ATM networks

NCU Institutional Repository > 資訊電機學院 > 電機工程研究所 > 期刊論文 > Item 987654321/29283

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/29283

题名:	Usage parameter control schemes for improving MPEG video quality over ATM networks
作者:	Kuo,FJ;Wu,JS;Keng,DL
贡献者:	電機工程研究所
日期:	1999
上传时间:	2010-06-29 20:20:49 (UTC+8)
出版者:	中央大學
摘要:	An MPEG encoder compresses moving pictures into I-, P-, and B-frames, where the most important I-frames generate traffic with the highest bit rate. For MPEG videos transmitted over ATM networks, invalid cells are discarded by a usage parameter control scheme at the user network interface and thus cause error propagation in both spatial and temporal domains. For spatial error propagation, the effect of a lost cell depends on the position located in a slice: the farther the position is, the lesser affected are the data. Besides, lost data near the edge of a screen is more tolerable than those at the central part. In order to improve the quality of the received video, we propose two methods to impute the violation of non-conforming cells to others located at a less important position of the same slice. Simulation results reveal that the quality is improved based on both PSNR and subjective visual feeling. (C) 1999 Elsevier Science B.V. All rights reserved.
關聯:	COMPUTER COMMUNICATIONS
显示于类别:	[電機工程研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	441	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing