Separable and Quincunx Wavelet Image Coding

{ It has been demonstrated that wavelets compete well against DCT based image compression techniques 1]. However the advantages of nonseparable wavelet transforms for image and video coding have not yet been adequately explored. In this paper we discuss nonseparable wavelet transforms on the quincunx lattice and show that they have certain properties which make them an attractive choice for image compression. We compare images compressed using separable and nonseparable biorthogonal lters, where the two-dimensional lters are obtained from the one-dimensional lters 2] thus preserving many of the properties from one-dimension to two-dimensions. We show that the performance of separable and nonseparable techniques is comparable under similar constraints even though the nonsep-arable lters have support areas less than the separable lters.