一种加速的规则体数据场光线投射体绘制算法  

An Efficient Ray - Casting Volume - Rendering Algorithm in Regular Data Sets

作　　者：王冼[1] 刘小平[1] 殷飞[1] 

机构地区：[1]华中科技大学图像识别与人工智能研究所,武汉430074

出　　处：《计算机与数字工程》2002年第2期27-32,共6页Computer & Digital Engineering

摘　　要：本文讨论了规则体数据场的体绘制算法,将光线投射体绘制算法看作是对体数据立方体投影多边形的填充,减少了投射光线的数目。将Bresenham画线算法推广到三维空间,减少了光线投射算法的计算时间。本算法已应用于我所开发的三维核磁共振图像分析系统中,效果较好。This paper discusses the volume rendering algorithm in regular data field. By looking rendering as a process of filling in projective polygon the amount of casting ray has been reduced. By extending Bresenham algorithm into three - dimension, this algorithm reduces time of ray - casting calculation. This algorithm has been applied to 3D NMR Image Analytical System of our institute and proved efficient.

关 键 词：规则 体数据场 体绘制 光线投射算法 凸多边形填充 BRESENHAM算法 计算机图形学 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]