Title :
An efficient joint source-channel rate allocation scheme for JPEG2000 codestreams
Author :
Wu, Zhenyu ; Bilgin, Ali ; Marcellin, Michael W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
Abstract :
A two-level, hybrid-optimization scheme is proposed for rate allocation of JPEG2000 (J2K) transmission over noisy channels. It combines forward error correction (FEC) and the J2K error resilience modes to minimize the expected end-to-end image distortion. Subject to a total target bit rate, it forms fixed-length channel packets in a straightforward manner. The proposed scheme utilizes the source distortion rate characteristics and the BER statistics of the available channel codes. It has complexity less than 0 (R/sup 2/) for a specific J2K codestream, where R is the number of available channel code rates. Performance results with both RCPC and turbo codes for fixed-length source packets are provided to show the effectiveness of the scheme.
Keywords :
combined source-channel coding; error statistics; forward error correction; image coding; minimisation; noise; turbo codes; BER; FEC; J2K error resilience mode; JPEG2000 codestream; JSCC; RCPC; bit error rate; channel code rate; fixed-length channel packets; fixed-length source packet; forward error correction; hybrid optimization scheme; image distortion; joint source-channel rate allocation; noisy channels; source distortion rate; turbo codes; Bit error rate; Bit rate; Computer errors; Decoding; Dynamic programming; Error correction; Forward error correction; Optimization methods; Resilience; Turbo codes;
Conference_Titel :
Data Compression Conference, 2003. Proceedings. DCC 2003
Conference_Location :
Snowbird, UT, USA
Print_ISBN :
0-7695-1896-6
DOI :
10.1109/DCC.2003.1194002
