A new object-order volume-rendering algorithm based on two-step lookup tables
Jiawan Zhang, Jizhou Sun, Zhigang Sun, Mingchu Li, Xiaobing Sun, Yan Liu · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004
Object-order volume rendering algorithms play important part in many visualization applications for their excellent performances. Though many volume rendering algorithms have been proposed during the past two decades, most of them are image-order algorithms. Splatting, one of the classical object-order algorithms, suffers from several kinds of aliasing artifacts for inaccuracy reasons. A much accurate object-order volume rendering algorithm is presented in this paper. By defining a set of data structures to serve as two step reconstruction lookup tables, together with using a simple voxel traversal and resample strategy, the new algorithm can not only get rid of inaccuracy of traditional splatting, but also have the features including high cache hit rate, easy to implement of parallelism and high speedup from pre-processing.