Modeling and subjective assessment of cell discard in ATM video

Author

Hughes, Charles J. ; Ghanbari, Mohammad ; Pearson, Donald E. ; Seferidis, Vassilis ; Xiong, Jianping

Author_Institution

Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK

Volume

2

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

212

Lastpage

222

Abstract

Measurements of subjective picture impairment as a function of network loading in a simulated ATM network are reported. The simulation indicated that cells tend to be discarded in bursts, the frequency and severity of which can be related to the loading by a threshold model. The effect of the discards on broadcast-style video, coded using a single-layer H.261-type method, was found to be a function of scene content and movement at the instant of occurrence. If the visibility of cell discards is maintained at or below threshold in worst-case scenes, the study indicated that network loadings around 55% for a multiplex of 16 video sources and around 70% for a multiplex of 48 video sources are achievable

Keywords

asynchronous transfer mode; image coding; video signals; ATM video; H.261-type method; cell discards; multiplexing; network loading; simulated ATM network; subjective picture impairment measurements; threshold model; video coding; video sources; Asynchronous transfer mode; Bit rate; Broadcasting; Frequency; Helium; Intelligent networks; Layout; Modeling; Multimedia communication; Video coding;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.217224

Filename

217224