Lossless acceleration of fractal image compression by fast convolution

Abstract
In fractal image compression the encoding step is computationallyexpensive. We present a new technique forreducing the computational complexity. It is lossless,i.e., it does not sacrifice any image quality for the sakeof the speedup. It is based on a codebook coherencecharacteristic to fractal image compression and leadsto a novel application of the fast Fourier transformbasedconvolution. The method provides a new conceptualview of fractal image compression. This paperfocuses on the...

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