Title :
Multiple description coding for noisy-varying channels
Author :
Pereira, Manuela ; Antonini, Marc ; Barlaud, Michel
Author_Institution :
I3S Lab., Sophia Antipolis Cedex, France
Abstract :
Summary form only given. The problem of efficient image/video transmission over wireless channels is considered. Such a problem involves good compression rates and effectiveness in presence of channel failures. The proposed work includes a balanced multiple description-coding (MDC) schemes for still image based on the discrete wavelet transform (DWT) developed. This MDC includes an efficient bit allocation procedure that dispatches the source image redundancy between different channels. Extended version for video was presented, and uses the 3D scan-based DWT that involves scan-based MDC with rate or quality control. To solve this problem, redundancy between the descriptors in function of channel model and state (BER) is proposed.
Keywords :
Gaussian channels; automatic repeat request; channel capacity; channel coding; data compression; discrete wavelet transforms; image coding; noise; redundancy; transform coding; visual communication; ARQ; DWT; FEC; MDC schemes; Shannon channel capacity; automatic repeat request; compression rate; discrete wavelet transform; error control scheme; forward error correction; image transmission; multiple description coding; noisy-varying channels; quality control; still images; video transmission; wireless channels; Bit error rate; Bit rate; Discrete wavelet transforms; Image coding; Quality control; Video compression;
Conference_Titel :
Data Compression Conference, 2003. Proceedings. DCC 2003
Print_ISBN :
0-7695-1896-6
DOI :
10.1109/DCC.2003.1194062
