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Fractal compression using random encoding algorithm

Świdzińska B.

Bulletin of the Polish Academy of Sciences. Technical Sciences

1998

Vol. 46, nr 4

525-532

Fractal image compression is a promising brand new compression method. In the paper several algorithms are compared. A majority of those algorithms accelerate the encoding process by reduction of the size of the domain pool. I show in the paper that unlike assumed in many algorithms, the optimal domain block need not be located in the close neighborhood of the range block. I suggest two techniques of solving this problem: (1) domain blocks are searched in the whole image, but they do not cover it, (2) the positions of domain blocks are random. The other algorithm looks particularly promising: it is fast and the quality of reconstruction is acceptable in most cases. The numerical results for both methods are given.