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2001
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Rate-distortion unequal error protection for fractal image codes

12 years 1 months ago
Rate-distortion unequal error protection for fractal image codes
Fractal image codes are very sensitive to bit errors because the decoding of a block is dependent not only on the code information associated to this block but also on the code information associated to other blocks. We analyze the sensitivity of a fractal code to transmission errors in a binary symmetric channel. We provide two rate-distortion unequal error protection techniques that allocate the code bits to protection classes in a nearly optimal way. We give an implementation for BCH and RCPC channel codes and show that RCPC codes are preferable. For a binary symmetric channel bit error probability of 0.1 and a total code rate of 0.5 bpp, the loss in reconstruction quality with our best implementation was about 3.9 dB for the 512 ? 512 Lenna image, yielding a PSNR of 26.6 dB.
Vladimir Stankovic, Dietmar Saupe, Raouf Hamzaoui
Added 25 Oct 2009
Updated 25 Oct 2009
Type Conference
Year 2001
Where ICIP
Authors Vladimir Stankovic, Dietmar Saupe, Raouf Hamzaoui
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