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<para> For two-description image coding, a conventional scheme is to partition an image into two parts and then to produce each description by alternatively concatenating a finely coded bitstream of one part and a coarsely coded bitstream of the other part. This letter presents a new two-description image coding approach using steganography. Specifically, we propose forming each description...
In fractal image coding, the main consuming time is the process of finding the best matched domain block in a large domain pool for a given range block. In this paper, we propose a fast algorithm for fractal image coding based on the following lemma and fine granularity successive elimination (FGSE). The lemma describes the relationship between fractal image coding and FGSE. This algorithm can decrease...
Fractal image coding (FIC) can exploit redundance at different scale in spatial domain. But there is no scheme presented to exploit the different scale redundance in frequency domain. In this paper, we extend the H product defined by Kou et al. Using the extended product, a new transform is constructed to exploit redundance at different scale in frequency domain. Meanwhile, a quantization method is...
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