Hybrid fractal-wavelet image compression based on a rate-distortion criterion

Jin Li; C.-C. Jay Kuo

doi:10.1117/12.263181

10 January 1997 Hybrid wavelet-fractal image compression based on a rate-distortion criterion

Jin Li, C.-C. Jay Kuo

Proceedings Volume 3024, Visual Communications and Image Processing '97; (1997) https://doi.org/10.1117/12.263181
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

A new hybrid wavelet-fractal coder (WFC) for image compression is proposed in this research. We show that the application of contractive mapping for interscale wavelet prediction in the wavelet domain offers bit rate savings in some regions. The prediction residue is then quantized and encoded by traditional wavelet coders. WFC allows the flexibility to choose either direct coding of wavelet coefficients or fractal prediction followed by residual coding to achieve a better rate-distortion (R-D) performance. A criterion of low complexity is derived to evaluate the R-D efficiency of fractal prediction. The superior performance of WFC is demonstrated with extensive experimental results.

Citation Download Citation

Jin Li and C.-C. Jay Kuo "Hybrid wavelet-fractal image compression based on a rate-distortion criterion", Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); https://doi.org/10.1117/12.263181

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