一种基于非透明度校正的光线投射体绘制算法  

A Non-transparency Correction Based Ray Casting Volume Rendering Algorithm

作　　者：曾文权[1] 胡玉贵[1] 余爱民[1] 

机构地区：[1]广东科学技术职业学院计算机工程技术学院,珠海519090

出　　处：《科学技术与工程》2013年第10期2867-2870,共4页Science Technology and Engineering

基　　金：广东省自然科学基金(S2011010002537);广东省科技计划项目(2012A030400029)资助

摘　　要：针对传统光线投射体绘制算法的非透明度校正不能满足实际应用的要求,提出了一种新的体绘制算法。该算法基于新的采样合成函数,采用非透明度提前截止来判断光线终止。最后,通过gsgl语言编写顶点程序和片段程序对实现了算法。实验结果表明该算法在不同的采样间距下都可以大大改善体绘制的质量和速度。For the correction of non-transparency in traditional ray casting volume rendering algorithm can not meet the requirements of practical application, a new volume rendering algorithm was put forward. A new sampling synthesis function is used and cutoff of non-transparency ahead of deadline are used to determine the termination of light. Finally, the algorithm was implemented by using gsgl experimental results show that the proposed algorithm under ity and speed of ray casting volume rendering. language to compile vertex and fragment programs. The different sampling spacing can greatly improve the qual-

关 键 词：透明度 光线投射 体绘制 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]