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| 基于GPU的交互式动态折射绘制算法 | |
| 引用本文： | 刘保权,吴恩华,刘学慧.基于GPU的交互式动态折射绘制算法[J].计算机辅助设计与图形学学报,2006,18(11):1652-1657. |
| 作者姓名： | 刘保权 吴恩华 刘学慧 |
| 作者单位： | 1. 中国科学院软件研究所计算机科学重点实验室,北京,100080;中国科学院研究生院,北京,100049 2. 中国科学院软件研究所计算机科学重点实验室,北京,100080;澳门大学科学技术学院电脑及资讯科学系,澳门 3. 中国科学院软件研究所计算机科学重点实验室,北京,100080 |
| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金;澳门大学校科研和教改项目 |
| 摘 要： | 提出一种完全基于GPU的更准确的折射绘制算法.该算法不需要任何预计算,可直接绘制基于网格表示的复杂物体,能交互式地绘制动态可变形物体的多次折射和全反射现象;通过在正投影空间上进行光线与物体的求交运算来跟踪光线穿过物体的准确路径（包括折射及全反射路径）,可以生成真实感很强的折射及全反射图像.最后通过在光线传播路径上使用体绘制中的散射和吸收模型来模拟半透明物体的真实感绘制. |
| 关 键 词： | 图形硬件 实时绘制 完全透明 半透明 全反射 |
| 收稿时间： | 2006-05-12 |
| 修稿时间： | 2006年5月12日 |
Interactively Rendering Dynamic Refraction on GPU |
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| Liu Baoquan,Wu Enhua,Liu Xuehui.Interactively Rendering Dynamic Refraction on GPU[J].Journal of Computer-Aided Design & Computer Graphics,2006,18(11):1652-1657. | |
| Authors: | Liu Baoquan Wu Enhua Liu Xuehui |
| Affiliation: | 1.Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100080;2.Department of Computer and Information Science, Faculty of Science and Technology, University of Macau, Macao ;3. Graduate University of Chinese Academy of Sciences, Beijing 100049 |
| Abstract: | A more accurate refraction rendering algorithm, which runs entirely on GPU, is presented in this paper. The algorithm can directly render complex objects represented by polygonal meshes without any pre-calculating, and allows the objects to be deformed dynamically through the interaction of users. The rendering method allows refraction or totally internal reflection (TIR) through two or more interfaces. Our method traces the accurate paths of both refraction and TIR rays going through the transparent object, and computes the ray-surface intersection in orthogonal projection space on GPU to produce realistic image including both refraction and TIR. We also simulated the object's translucency by adopting the scattering and absorbing model in volume rendering method during the ray passing through the object. |
| Keywords: | GPU |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |