Progressive coding of medical volumetric data using three-dimensional integer wavelet packet transform
Zixiang Xiong, Xiaolin Wu, David Y. Y. Yun, William A. Pearlman · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998
We examine progressive lossy to lossless compression of medical volumetric data using three-dimensional (3D) integer wavelet packet transforms and set partitioning in hierarchical trees (SPIHT). To achieve good lossy coding performance, we describe a 3D integer wavelet packet transform that allows implicit bit shifting of wavelet coefficients to approximate a 3D unitary transformation. We also address context modeling for efficient entropy coding within the SPIHT framework. Both lossy and lossless coding performances are better than those reported recently in reference one.