摘要
光线投射法是体绘制技术中的经典算法。该算法原理简单、明了,并能产生高质量的显示图像,但由于所有体素参与了图像绘制,运行速度慢,从而极大制约了其在交互可视化中的运用。论文利用光线穿过三维规则数据场时与某一方向平面簇交点的快速确定及光线投射方向确定后两相邻平面间所截取线段为定长的特点,简化了光线亮度积分公式,从而在图像质量不减低的情况下,快速进行图像绘制。
Ray casting algorithm is a volume rendering technique of producing superior image quality.The primary drawback of this algorithm is its high cost.Since all voxels participate in the generation of each image,it takes very long rendering time.Taken advantage of fast intersection computation of the ray and a family of planes and simplified the intensity formula,the algorithm generates images quickly.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第5期39-40,123,共3页
Computer Engineering and Applications
