理想材料零件的锥束CT投影仿真  

Projection Simulation of Cone-Beam CT for Ideal Functional Material Components

作　　者：黄魁东[1] 张定华[1] 毛海鹏[1] 刘远[1] 

机构地区：[1]西北工业大学现代设计与集成制造技术教育部重点实验室,西安710072

出　　处：《计算机辅助设计与图形学学报》2007年第2期157-162,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(50375126)

摘　　要：针对锥束CT在理想材料零件研制中的应用需求,给出了基于拓展体素模型的CT仿真零件材料信息表示方法.在体素模型的投影图像仿真计算中,提出了一种三维射束与体素模型的快速遍历与求交算法,并结合Simpson积分公式实现了投影直线积分的高效高精度计算.实验结果验证了该算法的有效性.Focusing on the application demand of cone-beam CT in the research and development of ideal functional material components, an approach based on extended voxel model to express the material information of CT simulation components is presented. In the computation of projection simulation for voxel models, the paper proposed a new efficient method for voxel model traversal and intersection calculation along 3D ray beam, and employed Simpson integral formula to realize the projection linear integration with high speed and accuracy. Experimental result shows the availability of the method.

关 键 词：锥束CT 理想材料零件 投影仿真 体索遍历 Simpson积分 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]