A feedback system for graphics video coding and networking

Author

Wang, Dongmei ; Mersereau, Russell M.

Author_Institution

StarCore Technol. Center, Agere Syst., Atlanta, GA, USA

Volume

3

fYear

2001

fDate

2001

Firstpage

1473

Abstract

This paper presents feedback design of a desktop visual communications system. The system consists of video coding using a 3-D graphics model and video transmission over the Internet. To reduce the overall video quality degradation in visual communications caused by coding and networking errors, we jointly researched the compression and transmission of video signals. In building the 3-D graphics model-based coding structure, instead of using feedforward based on pixel intensity, we develop a three-level signal representation and an analysis-by-synthesis feedback framework. In prototyping the video over IP in desktop conferencing, we adapt the video encoders coding rates based on feedback of the network states and receivers. We therefore contribute to the analysis, modeling, and transmission of multimedia signals for desktop visual communications

Keywords

Internet; coding errors; computer graphics; data compression; image representation; multimedia communication; state feedback; teleconferencing; transport protocols; video coding; visual communication; 3D graphics model; Internet; analysis-by-synthesis feedback; coding errors; coding rates; desktop conferencing; desktop visual communications system; feedback design; feedback system; graphics video coding; graphics video networking; multimedia communications; network state feedback; networking errors; three-level signal representation; video coding; video encoders; video over IP; video quality; video signal compression; video signal transmission; video transmission; visual communications; Buildings; Degradation; Feedback; Graphics; Internet; Signal analysis; Video coding; Video compression; Videoconference; Visual communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.941209

Filename

941209