R. Furusawa, M. Nakagawa. Fractal Image Coding with a Multiscaling-Domain. Electronics and Communications in Japan Part 3 - Fundamental Electronic Science, 87(2):79-87, 2004.
In order to improve the approximation capability of fractal coding, a fractal coding method using multiple domains is proposed in which an approximation is carried out by superposition of contracted images from multiple domain blocks. By combining the multidomain method with the multiscalaling procedure of dividing blocks into regions and individually providing the scaling coefficients of brightness, a contraction transform with even better degrees of approximation is obtained and edge reconstruction is improved. As a result, excellent reconstructed images are obtained even for complicated images for which high reproducibility cannot be realised with the conventional fractal coding. Also, it is possible to reproduce contour regions containing edges
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@article{FuNa04,
Author = {Furusawa, R. and Nakagawa, M.},
Title = {Fractal Image Coding with a Multiscaling-Domain},
Journal = {Electronics and Communications in Japan Part 3 - Fundamental Electronic Science},
Volume = {87},
Number = {2},
Pages = {79--87},
Publisher = {Wiley},
Year = {2004}
}