DocumentCode :
2253903
Title :
PC-based quick algorithm for rendering semi-transparent multi-isosurfaces of volumetric data
Author :
Wan, Mng ; Tang, Long ; Tang, Zesheng ; Li, Xinyou
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
fYear :
1996
fDate :
24-28 Jun 1996
Firstpage :
54
Lastpage :
61
Abstract :
Direct volume rendering techniques use semi-transparency to visualize much more important features in the three-dimensional scalar sample volumes than isosurface rendering methods. However, they are computationally expensive and far from interactive manipulation. In fact, on the base of the boundary representation scheme for the volumetric data, the 3D spatial coherence can be fully exploited to drastically reduce the rendering time and the memory space for arbitrary viewing orientation. A PC-based rendering algorithm using the boundary scheme is proposed in this paper, which produces results visually similar to the volume rendering techniques, but speedups at least an order of magnitude. Examples from medical CT studies are given in contrast to the results from ray casting method both in image quality and in processing time
Keywords :
computerised tomography; data visualisation; medical image processing; rendering (computer graphics); 3D spatial coherence; PC-based quick algorithm; direct volume rendering techniques; image quality; interactive manipulation; medical CT studies; memory space; processing time; ray casting method; rendering semi-transparent multi-isosurfaces; three-dimensional scalar sample volumes; volumetric data; Biomedical imaging; Casting; Computed tomography; Computer science; Data visualization; Image quality; Isosurfaces; Rendering (computer graphics); Spatial coherence; Surface fitting;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Graphics International, 1996. Proceedings
Conference_Location :
Pohang
Print_ISBN :
0-8186-7518-7
Type :
conf
DOI :
10.1109/CGI.1996.511787
Filename :
511787
Link To Document :
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