| 战场环境仿真中基于图像的实时阴影技术 |
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| 引用本文： | 万刚,曹雪峰,李锋,张挺.战场环境仿真中基于图像的实时阴影技术[J].测绘科学技术学报,2007,24(1):18-21. |
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| 作者姓名： | 万刚 曹雪峰 李锋 张挺 |
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| 作者单位： | 信息工程大学,测绘学院,河南,郑州,450052;73603部队,江苏,南京,210049 |
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| 基金项目： | 国家自然科学基金
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国家重点实验室基金 |
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| 摘 要： | 阴影是战场环境仿真中增强真实感的重要手段.分析战场环境中阴影的特点,将其分为静态阴影和动态阴影,根据战场环境仿真对阴影效果实时性和真实感的要求,采用改进的快速光线跟踪算法和预烘焙方法生成光照图,分别实现静态阴影中的地形和地物阴影,采用光源空间透视阴影图技术,改善阴影边缘走样,实时渲染真实的动态阴影.实验结果表明,实现的阴影效果达到了较好的实时性和真实感.
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| 关 键 词： | 虚拟现实 光照图 光源空间透视阴影图 实时阴影渲染 |
| 文章编号： | 1673-6338（2007）01-0018-04 |
| 收稿时间： | 2006-09-05 |
| 修稿时间： | 2006-11-13 |
IBR Real-Time Shadow Technology in the Battlefield Environment Simulation |
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| WAN Gang,CAO Xue-feng,LI Feng,ZHANG Ting.IBR Real-Time Shadow Technology in the Battlefield Environment Simulation[J].Journal of Zhengzhou Institute of Surveying and Mapping,2007,24(1):18-21. |
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| Authors: | WAN Gang CAO Xue-feng LI Feng ZHANG Ting |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052 ,China; 2. 73603 Troops, Nanjing 210049,China |
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| Abstract: | Shadow is the important means to tone up the feeling of reality and immersion in the battlefield envi- ronment simulation. This paper analyzed the characters and classification of shadow, and implemented the static shadow by lightmapping which used the fast tray traced terrain shadow map and pre-bake mesh shadow on terrain and the dynamic shadow by light space perspective shadow map, finally we got satisfactory results. |
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| Keywords: | virtual reality lightmapping light space perspective shadow map real-time rendering |
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