Etude de codage par blocs des algorithmes hiérarchiques EZW et SPIHT Study of embedded coding with blocks of EZW and SPIHT.

Abstract

ABSTRACT : Recently, image compression algorithms such as EZW and SPIHT became popular. Not only that they were effective, but also they were revolutionary in a way that they became the stepping-stone to a more better and standardized algorithms such as JPEG2000. Although, the EZW and SPIHT were better in terms of performance than the standardized algorithms, but their main drawback was the long computation time. In this article, we propose an optimization of these algorithms using blocks and parallel computing, the will show that there is a small loss in PSNR but the computation time largely reduced.