I. Introduction
Even though various image compression algorithms that provides the possibility to progressively reconstruct better and better reproductions of the image as more and more encoded bit stream is received, Pixel Classified And Sorted(PCAS) [1] algorithm exploit the redundancy among wavelet coefficients. Digital images are transmitted or stored using as little resources as possible so its encoding is a little bit redundant. In a typical image, the values of pixels close to each other are strongly related in such a way that the energy of the image is concentrated to the lower frequencies. Exploiting this idea and encoding in the transform domain enables a much more reliable transmission of images.