摘要
针对医学体数据场的直接体绘制(DVR)的加速算法进行了讨论。基于体绘制的多种加速技术,利用格雷厄姆求凸壳算法和与平面簇求交算法对体数据场和投射光线进行裁剪,结合多边形的扫描线转换和投射光线的离散化、体素化,改进了光线投射算法。
This paper discusses the accelerated direct volume rendering algorithm in medical data sets. Based on several accelerated techniques of DVR, an efficient ray-casting algorithm is presented which improves the traditional ray-casting algorithm. The algorithm mainly applies the methods of polygon scan conversion and voxelization of casting rays. At the same time, the algorithm uses the method of determining the convex hull of a set and the intersecting algorithm related directly to x, y,z family planes to clip data sets and rays.
出处
《山东科技大学学报（自然科学版）》
CAS
2005年第3期78-81,共4页
Journal of Shandong University of Science and Technology(Natural Science)
基金
山东省自然科学基金项目资助(Y2002G07)
关键词
医学体数据场
直接体绘制
光线投射
扫描转换
体素化
medical data sets
direct volume rendering
ray-casting
scan conversion
voxelization
