Abstract
This paper presents an idea for a parallel version of the WDR (wavelet difference reduction) compression algorithm. An implementation of the idea is applied to the Nguyen-Chen-Walker's WDR codec and related analysis are demonstrated. The parallel WDR codec (PWDR) reaches up to 50 percent speedup compared to the original sequential implementation for some images. A reliable extension of the parallelized program and analyses of its performance have been presented.
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