Layered video communications in an ATM environment

Author

Khademi, Maryam ; Paoloni, F.J.

Author_Institution

Wollongong Univ., NSW

Volume

1

fYear

1994

fDate

14-18 Nov 1994

Firstpage

65

Abstract

The paper to address the issue of cell loss and its consequent effect on video quality in an H.261 framework, and possible compensative measures. Adaptive 2-layered coding, two-step detection, and a two-step recovery with macroblock-based error concealment are proposed to keep the picture quality high by compensating for cell loss. The simulation performance of the proposed system, which includes DCT-based layered coding with temporal error concealment, is compared with 1-layered and fixed 2-layered coding techniques. It is shown that good resilience and SNR improvement can be achieved even at quite high error rates by this system in particular for video sequences with high activity content

Keywords

B-ISDN; adaptive codes; adaptive signal processing; asynchronous transfer mode; discrete cosine transforms; image sequences; signal detection; transform coding; video codecs; video coding; visual communication; ATM environment; B-ISDN; DCT-based layered coding; H.261; SNR improvement; adaptive 2-layered coding; cell loss compensation; high error rates; layered video communications; macroblock-based error concealment; picture quality; temporal error concealment; two-step detection; two-step recovery; video codec; video quality; video sequences; Asynchronous transfer mode; Australia; Bit rate; Codecs; Decoding; Error analysis; Intserv networks; Loss measurement; Resilience; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Singapore ICCS '94. Conference Proceedings.

Print_ISBN

0-7803-2046-8

Type

conf

DOI

10.1109/ICCS.1994.474106

Filename

474106