Enhanced significance-linked connected component analysis for high performance error resilient wavelet image coding
J. Vass, X. Zhuang · 2002
Error resilient coding strategies are proposed and integrated with the high performance significance-linked connected component analysis (SLCCA) wavelet image codec. First, the source bitstream is packetized so that the error propagation within the bitstream is minimized. Second, hierarchical resynchronization is applied, i.e., resynchronization markers are inserted in the bitstream after each bit-plane and possibly per each scale or subband. Third, the significance-links that exploit the cross-scale dependency of wavelet coefficients are reduced. Finally, bit-plane-wise unequal error protection is applied, with the parity bits being exponentially distributed among bit-planes. Extensive performance evaluation over a binary symmetric channel demonstrates the high error resilience and efficiency of the integrated joint source-channel coding strategies with the SLCCA source codec.