DocumentCode :
1671848
Title :
Robust image transmission based on wavelet tree coding and EREC
Author :
Cao, Lei ; Chen, Chang Wen
Author_Institution :
Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA
Volume :
3
fYear :
2001
fDate :
6/23/1905 12:00:00 AM
Firstpage :
222
Abstract :
We propose a robust image transmission scheme based on wavelet tree coding and error resilient entropy coding (EREC). After the wavelet decomposition, the coefficients are re-arranged into wavelet trees according to their spatial representation. Each wavelet tree is coded independently so that the scheme is essentially a block-based coding in the spatial domain. Since the self-similarity across subbands is preserved, a high source coding efficiency can be achieved. EREC is then adopted to enhance the error resilience capability of the compressed bitstream. At the receiving end, the automatic re-synchronization of each block is obtained. Furthermore, the bits impacted by the error propagation are more likely located in the low bit-layers so that the resultant degradation is less severe in terms of PSNR. Experimental results show that this proposed scheme can achieve a good error resilient performance
Keywords :
combined source-channel coding; entropy codes; error correction codes; image coding; spatial data structures; synchronisation; transform coding; tree data structures; visual communication; wavelet transforms; EREC; PSNR; automatic re-synchronization; block-based coding; compressed bitstream; error resilient entropy coding; robust image transmission; self-similarity; source coding efficiency; spatial representation; wavelet tree coding; Channel coding; Discrete cosine transforms; Entropy coding; Image coding; Image communication; PSNR; Resilience; Robustness; Source coding; Wavelet coefficients;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
Type :
conf
DOI :
10.1109/ICIP.2001.958091
Filename :
958091
Link To Document :
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