K. Belloulata, A. Baskurt, H. Benoit-Cattin, R. Prost. Adaptive fractal coding of subbands with clustering. In Proc. of the Conference Fractals in Engineering, Arcachon, June 1997.
We propose a new image compression scheme based on fractal coding of wavelet transform coefficients using a fast non-iterative algorithm for the codebook generation. Subbands are encoded using Local Iterated Function Systems (LIFS) with range and domain blocks presenting horizontal or vertical directionalities. The computational complexity of the fractal compression algorithm is reduced when generating LIFS for subbands of lower resolutions instead of for a full resolution image. We also propose a fast non-iterative algorithm for codebook generation which classifies the directional domain and range blocks and leads to an accelerated LIFS generation in each subband. The efficiency of the proposed approach both in terms of PSNR/bit rate curves and computation time is presented and compared to the obtained with other coding methods.
@InProceedings{BeBaBePr97,
Author = {Belloulata, K. and Baskurt, A. and Benoit-Cattin, H. and Prost, R.},
Title = {Adaptive fractal coding of subbands with clustering},
BookTitle = {Proc. of the Conference Fractals in Engineering},
Address = {Arcachon},
Month = {June},
Year = {1997}
}