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TIP
1998

An error resilient scheme for image transmission over noisy channels with memory

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An error resilient scheme for image transmission over noisy channels with memory
Abstract— This correspondence addresses the use of a joint sourcechannel coding strategy for enhancing the error resilience of images transmitted over a binary channel with additive Markov noise. In this scheme, inherent or residual (after source coding) image redundancy is exploited at the receiver via a maximum a posteriori (MAP) channel detector. This detector, which is optimal in terms of minimizing the probability of error, also exploits the larger capacity of the channel with memory as opposed to the interleaved (memoryless) channel. We first consider MAP channel decoding of uncompressed two-tone and bitplane encoded grey-level images. Next, we propose a scheme relying on unequal error protection and MAP detection for transmitting grey-level images compressed using discrete cosine transform (DCT), zonal coding, and quantization. Experimental results demonstrate that for various overall (source and channel) operational rates, significant performance improvements can be achieve...
Philippe Burlina, Fady Alajaji
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 1998
Where TIP
Authors Philippe Burlina, Fady Alajaji
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