Title :
A multi-channel channel-optimized scheme for EZW using rate-distortion functions
Author :
Liu, Jen-Chang ; Hwang, Wen-Liang ; Hwang, Wen-Jyi ; Chen, Ming-Syan
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We develop a multi-channel channel-optimized scheme for embedded zerotree wavelet (EZW) image compression in a noisy transmission environment. A block-based modification for EZW is applied to improve the robustness of EZW, and to produce several coded bitstreams for transmission over multiple channels with different noise conditions. Then the respective channel noise is considered in the rate-distortion analysis, and the resultant rate-distortion functions are used for optimal bit allocation among the coded bitstreams. The case of burst noise is analyzed as an example
Keywords :
burst noise; combined source-channel coding; data compression; image coding; rate distortion theory; wavelet transforms; EZW image compression; block-based modification; burst noise; channel coding; channel noise; coded bitstreams; embedded zerotree wavelet; multi-channel channel-optimized scheme; noisy transmission environment; optimal bit allocation; rate-distortion functions; source coding; Bit rate; Channel coding; Cost function; Decoding; Image coding; Information science; Noise robustness; Rate-distortion; Source coding; Working environment noise;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.900978
