R. Hamzaoui, H. Hartenstein, D. Saupe. Local iterative improvement of fractal image codes. Image and Vision Computing, 18(6):565-568, 2000.
In fractal image compression, the code is given by a contractive affine mapping whose fixed point is an approximation to the original image. Usually, the mapping is found by the collage coding method. We propose an algorithm that starts from an initial mapping obtained by collage coding and iteratively provides a sequence of contractive mappings whose fixed points are monotonically approaching the original image. Experimental results show that the rate-distortion improvement over collage coding is significant.
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@article{HaHaSa00,
Author = {Hamzaoui, R. and Hartenstein, H. and Saupe, D.},
Title = {Local iterative improvement of fractal image codes},
Journal = {Image and Vision Computing},
Volume = {18},
Number = {6},
Pages = {565--568},
Year = {2000}
}