30 May 2000 Fast calculation of IFS parameters for fractal image coding
Author Affiliations +
Proceedings Volume 4067, Visual Communications and Image Processing 2000; (2000) https://doi.org/10.1117/12.386580
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia
Abstract
Fractal image coding based on Iterated Function System (IFS) has been attracting much interest because of possibilities of drastic data compression. It achieves compression by using the self-similarity in an image. It is one of the weak points on IFS that the calculation time is huge. Especially, the amount of calculation on scaling parameter and rmse is very huge. In this paper, we propose two schemes to reduce the calculation time while the quality of the image is kept. The first one reduces calculation time of parameters, affine transform and rmse by using the maximum amplitude ratio which is a ratio between the maximum amplitude range of range block and that of domain block. By using the maximum amplitude radio, domain block which does not seem to choose is excluded before calculating parameters. The second one reduces calculation time of scaling parameters by using the ratio between variance of range block and that of domain block. The variance ratio is used instead of the scaling parameter. We perform the fractal compression experiments based on the proposed scheme to verify the effectiveness of these schemes. Computational experiments show that about 50% of calculation time is reduced by using both of two schemes.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Masaki Harada, Masaki Harada, Tadahiko Kimoto, Tadahiko Kimoto, Toshiaki Fujii, Toshiaki Fujii, Masayuki Tanimoto, Masayuki Tanimoto, } "Fast calculation of IFS parameters for fractal image coding", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386580; https://doi.org/10.1117/12.386580
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Wavelet-based fractal image compression
Proceedings of SPIE (September 24 2003)
Genetic algorithms for fast search in fractal image coding
Proceedings of SPIE (February 26 1996)
Fractal-based image coding with polyphase decomposition
Proceedings of SPIE (October 21 1993)
Extensions of fractal theory
Proceedings of SPIE (August 18 1993)
Fractal image coding based on replaced domain pools
Proceedings of SPIE (January 08 1998)

Back to Top