Statistics of video signals for viewphone-type pictures

Author

Chin, Hin Soon ; Goodge, John W. ; Griffiths, Roy ; Parish, David J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Technol., Loughborough, UK

Volume

7

Issue

5

fYear

1989

fDate

6/1/1989 12:00:00 AM

Firstpage

826

Lastpage

832

Abstract

The authors describe a series of measurements of the statistics of viewphone-type video signals, with particular regard to the possible transmission of such signals over an asynchronous transfer mode (ATM) network. Measurements include the frame-to-frame differences and the cluster length distribution. It is known that with efficient picture coding, the information rate required for a constant picture quality varies significantly and creates problems in a constant-bit-rate system. The multiplexing of a number of sources in a variable-bit-rate (VBR) system is considered. It is shown that considerable reduction in the variability of the data rate is obtained. While the results are derived from one particular type of picture coder, it is expected that the conclusion will apply to other coding schemes

Keywords

encoding; picture processing; statistical analysis; video signals; videotelephony; ATM network; asynchronous transfer mode network; cluster length distribution; constant picture quality; frame-to-frame differences; information rate; multiplexing; picture coding; statistics; variable-bit-rate; video signals; viewphone-type pictures; Asynchronous transfer mode; Bit rate; Codecs; Fabrics; Information rates; Length measurement; Output feedback; Particle measurements; Statistics; Wideband;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.32346

Filename

32346