00000cab a22000003a 4500 UP-99796217609533311 Buklod 20231007234403.0 m |o d | ta 101113s xx d | ||r ||||| || DENGII eng Kassim, A.A. Motion compensated lossy-to-lossless compression of 4-D medical images using integer wavelet transforms. pp. 132-138 This paper proposes a method for progressive lossy-to-lossless compression of four-dimensional (4-D) medical images (sequences of volumetric images over time) by using a combination of three-dimensional (3-D) integer wavelet transform (IWT) and 3-D motion compensation. A 3-D extension of the set-partitioning in hierarchical trees (SPIHT) algorithm is employed for coding the wavelet coefficients. To effectively exploit the redundancy between consecutive 3-D images, the concepts of key and residual frames from video coding is used. A fast 3-D cube matching algorithm is employed to do motion estimation. The key and the residual volumes are then coded using 3-D IWT and the modified 3-D SPIHT. The experimental results presented in this paper show that our proposed compression scheme achieves better lossy and lossless compression performance on 4-D medical images when compared with JPEG-2000 and volumetric compression based on 3-D SPIHT. 3-D cube matching algorithm. 3-D motion compensation. 3-D set-partitioning in hierarchical trees algorithm. 4-D medical images. JPEG-2000. Integer wavelet transforms. Motion compensated lossy-to-lossless compression. Motion estimation. Three-dimensional integer wavelet transform. Video coding. Volumetric compression. Wavelet coefficient coding. IEEE Transactions on information technology in biomedicine 9, 1 (2005). FO UPD DENG-II Article