基于OptiX光线跟踪引擎的光线跟踪全息图生成算法  

Ray-Tracing Hologram Generation Algorithm Based on OptiX Ray-Tracing Engine

作　　者：孙敏远 袁园 毕勇[3] 朱建英 张硕 张文平 Sun Minyuan;Yuan Yuan;Bi Yong;Zhu Jianying;Zhang Shuo;Zhang Wenping(Optical Engineering Research Department,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China;Applied Laser Research Center,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院空天信息创新研究院光学工程研究部,北京100094 [2]中国科学院大学,北京100049 [3]中国科学院理化技术研究所应用激光研究中心,北京100190

出　　处：《激光与光电子学进展》2020年第24期35-41,共7页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2016YFB0401902)。

摘　　要：为了实现全息图的快速计算,提出了一种基于OptiX光线跟踪引擎和NVIDIA图形处理器(GPU)的光线跟踪全息图生成算法。该算法充分利用了GPU中的硬件光线跟踪核心,可有效提高全息图的计算速度。当组成三维模型的多边形数量为1.6万个,物点数量为4万个时,该光线跟踪全息图生成算法的计算速度约为基于GPU的点源全息图生成算法的11.5倍。In order to realize the fast calculation of computer-generated holograms,a ray-tracing algorithm is proposed,which is based on the OptiX ray-tracing engine and the NVIDIA graphic processing unit(GPU).This algorithm makes full use of the ray-tracing hardware core in GPU and thus effectively increase the calculation speed of holograms.When the three-dimension model is consisted of 1.6×10^(4) polygons and 4×10^(4) points,the calculation speed of the proposed algorithm is 11.5 times that of the traditional point source hologram generation algorithm based on GPU.

关 键 词：全息 计算全息 光线跟踪 图形处理器 光线跟踪引擎 

分 类 号：O438.1[机械工程—光学工程]