Share Email Print

Proceedings Paper

Continuous presence video bridging based on H.261 standard
Author(s): Ting-Chung Chen; Shawmin Lei; Ming-Ting Sun
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Multi-point videoconferencing provides the full benefits of teleconference but also incurs more involved technical issues. This paper does a detailed analysis of a continuous presence video bridge using the H.261 video coding standard. We first describe the architecture and the required operations of a coded domain bridge using H.261. We then derive the bounds of the bridge delay and the required buffer size for the implementation of the bridge. The delay and the buffer occupancy of the video bridge depend on the order, complexity, and the bit- distribution of the input video sources. To investigate a typical case, we simulate the delay and the buffer occupancy of a video bridge. We also provide a heuristic method to estimate the delay in a typical case. Several techniques were discussed to minimize the bridge delay and the buffer size. Finally, we simulate an intra slice coding and show that the delay and the buffer size can be reduced significantly using this technique.

Paper Details

Date Published: 22 October 1993
PDF: 12 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157946
Show Author Affiliations
Ting-Chung Chen, Bell Communications Research (United States)
Shawmin Lei, Bell Communications Research (United States)
Ming-Ting Sun, Bell Communications Research (United States)

Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

© SPIE. Terms of Use
Back to Top