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Joint Decoding of Unequally Protected JPEG2000 Bitstreams and Reed-Solomon Codes

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3 Author(s)
Sohail Bahmani ; Department of Electrical and Computer Engineering, School of Engineering Science, Carnegie Mellon University, Simon Fraser University, Pittsburgh, Burnaby, PA, USACanada ; Ivan V. Bajic ; Atousa HajShirmohammadi

In this paper we present joint decoding of JPEG2000 bitstreams and Reed-Solomon codes in the context of unequal loss protection. Using error resilience features of JPEG2000 bitstreams, the joint decoder helps to restore the erased symbols when the Reed-Solomon decoder fails to retrieve them on its own. However, the joint decoding process might become time-consuming due to a search through the set of possible erased symbols. We propose the use of smaller codeblocks and transmission of a relatively small amount of side information with high reliability as two approaches to accelerate the joint decoding process. The accelerated joint decoder can deliver essentially the same quality enhancement as the nonaccelerated one, while operating several times faster.

Published in:

IEEE Transactions on Image Processing  (Volume:19 ,  Issue: 10 )