DISCRETE WAVELET TRANSFORM FOR IMAGE COMPRESSION AND RECONSTRUCTION VIA VLSI

ABSTRACT Image compression is one of the majority assure subject in image processing. The demand for higher quality images transmitted quickly over the internet has led to a strong need to develop better algorithms for the filtering and coding of such images. In this article the Discrete Wavelet Transform (DWT) is to be used for the compression and reconstruction of images together with an efficient coding scheme. The use of wavelets implies the use of sub band coding in which the image is iteratively decomposed into high-and low frequency bands. Thus there is a need for filter pairs at both the analysis and synthesis stages. Introduction of the DWT to illustrate its link with filters and filter banks and also to exemplify how it may be used as part of an image compressing algorithm had been carried out in this research