Optimization of dynamic UEP schemes for embedded image sources in noisy channels

Author

Zhao, Minyi ; Akansu, Ala N.

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

Volume

1

fYear

2000

fDate

2000

Firstpage

383

Abstract

We present an optimization algorithm for 3-rate dynamic unequal error protection (UEP) schemes for embedded image bit streams transmitted over noisy channels. A theoretical upper bound for UEP gains is also given. Simulation results demonstrate about 0.3 dB improvements over the optimal equal error protection (EEP) schemes at the price of negligible overheads and off-line computation load. The progression of the source bit streams is still kept. Furthermore, it is discovered that for binary symmetric channels (BSCs) with bit error rate (BER) satisfying ε⩽10^-1, at most 3 protection levels are enough to squeeze out almost all the UEP gains

Keywords

combined source-channel coding; convolutional codes; image coding; optimisation; BER; RCPC code; UEP schemes; binary symmetric channels; bit error rate; dynamic unequal error protection; embedded image bit streams; embedded image sources; noisy channels; optimization algorithm; rate-compatible punctured convolutional code; simulation results; upper bound; Bit error rate; Bit rate; Codecs; Computational modeling; Constraint optimization; Error correction codes; Heuristic algorithms; Image generation; Streaming media; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2000. Proceedings. 2000 International Conference on

Conference_Location

Vancouver, BC

ISSN

1522-4880

Print_ISBN

0-7803-6297-7

Type

conf

DOI

10.1109/ICIP.2000.900975

Filename

900975