实时光影技术在虚拟仿真实验教学中的应用  

Application of real-time shadows technology in virtual simulation teaching

作　　者：孙振明 侯运炳[1] 王雷 SUN Zhenming;HOU Yunbing;WANG Lei(School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Beijing LongRuan Technologies Inc.,Beijing 100190,China)

机构地区：[1]中国矿业大学(北京)能源与矿业学院,北京100083 [2]北京龙软科技股份有限公司,北京100190

出　　处：《实验技术与管理》2022年第2期78-81,109,共5页Experimental Technology and Management

基　　金：国家重点研发计划项目(2017YFC0804303);中国矿业大学(北京)教学改革项目(J200104)。

摘　　要：针对虚拟仿真实验教学系统中场景不够真实的问题,文章对实时光影技术的应用开展了研究工作。首先,介绍了实时光影技术的背景,总结了光线跟踪算法、辐射度算法、阴影图算法等技术;其次,以采矿与安全虚拟仿真教学系统为例,研究了系统对实时光影算法的选择应用模式,分析了相关参数的设定方法;最后,通过同一项目场景在不同光影设置下的对比,从主观和客观评价两方面,说明了实时光影技术的应用对系统真实感提升具有良好的效果。Aiming at the problem that the scene in the teaching system of virtual simulation experiment is not photorealistic enough, the application of real-time shadows technology is studied in this paper. Firsly, the background of the real-time shadows technology is introduced including the ray tracing algorithm, radiosity algorithm, shadow map algorithm and other technical content. Secondly, taking the mining and safety virtual simulation teaching system as an example, the selection and application mode of real-time shadow algorithm is studied, and the setting methods of relevant parameters are analyzed. Finally, through the comparison of the same scene under different lighting and shadow settings, it shows that the application of real-time shadows technology has a good effect on improving the realism of the system from two aspects of subjective and objective evaluation.

关 键 词：实时光影 虚拟仿真 教学系统 光线跟踪 

分 类 号：G642.423[文化科学—高等教育学] TB391.9[文化科学—教育学]