Image Compression Based On Wavelet, Polynomial and Quadtree.

In this paper a simple and fast image compression scheme is proposed, it is based on using wavelet transform to decompose the image signal and then using polynomial approximation to prune the smoothing component of the image band. The architect of proposed coding scheme is high synthetic where the error produced due to polynomial approximation in addition to the detail sub-band data are coded using both quantization and Quadtree spatial coding. As a last stage of the encoding process shift encoding is used as a simple and efficient entropy encoder to compress the outcomes of the previous stage. The test results indicate that the proposed system can produce a promising compression performance while preserving the image quality level. [ABSTRACT FROM AUTHOR]