医学体绘制的一种快速光线投射算法(英文)  

Accelerated Algorithm of Ray Castingin Medical Volume Rendering

作　　者：牛翠霞[1] 范辉[1] 杜慧秋[1] 

机构地区：[1]山东工商学院信息与电子工程学院,烟台264005

出　　处：《系统仿真学报》2006年第z1期343-346,共4页Journal of System Simulation

基　　金：Basic Research Program of shandong(Y2005G09)

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。The accelerated direct volume rendering algorithm in medical data sets was discussed. Based on several accelerated techniques of DVR, an efficient ray-casting algorithm was proposed which improved the traditional ray-casting algorithm. The algorithm mainly applies methods of polygon scan conversion and voxelization of casting rays. 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.

关 键 词：医学体数据场 体素化 直接体绘制 扫描转换 光线投射 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]