Rate-distortion-optimal parameter choice in a wavelet image communications system

Author

Garcia-Frias, Javier ; Benyamin, Dan ; Villasenor, John D.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

2

fYear

1997

fDate

26-29 Oct 1997

Firstpage

25

Abstract

We describe the methodology and results of parameter optimizations performed with the aid of analytical expressions for the channel-induced distortion in a wavelet-based image communication system. R(D) curves are calculated independently for each subband, with each point on each curve representing (in addition to rate and distortion) an optimal choice of quantizer step size and channel code rate. A global optimization procedure is then performed to identify the best operating point on the R(D) curve for each subband

Keywords

channel coding; image coding; optimisation; rate distortion theory; source coding; transform coding; visual communication; wavelet transforms; channel code rate; channel coding; channel-induced distortion; global optimization procedure; image coding; parameter optimization; quantizer step size; rate distortion theory; source coding; wavelet image communications system; Entropy coding; Error correction codes; Image analysis; Image communication; Optimization methods; Performance analysis; Protection; Rate distortion theory; Rate-distortion; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1997. Proceedings., International Conference on

Conference_Location

Santa Barbara, CA

Print_ISBN

0-8186-8183-7

Type

conf

DOI

10.1109/ICIP.1997.638664

Filename

638664