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Rate-distortion performance for joint source and channel coding of images
Ruf, M.J.; Modestino, J.W.;
Image Processing, 1995. Proceedings., International Conference on
Volume 2,
23-26 Oct. 1995
Page(s):77
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80 vol.2
Abstract:
This paper describes a methodology for evaluating the rate-distortion behavior of combined source and channel coding schemes with particular application to images. We demonstrate use of the operational rate-distortion function to obtain the optimum tradeoff between source coding accuracy and channel error protection under the constraint of a fixed transmission bandwidth. Furthermore, we develop information-theoretic bounds on performance and demonstrate that our combined source-channel coding methodology results in rate-distortion performance which closely approaches these theoretical limits. We concentrate specifically on a wavelet-based subband source coding scheme and the use of binary rate-compatible punctured convolutional (RCPC) codes for transmission over the additive white Gaussian noise (AWGN) channel
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