| 非线性折射和反射平面场景的实时光线跟踪 |
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| 引用本文： | 秦开怀,常正义,李亚峰,王华维,曾旭. 非线性折射和反射平面场景的实时光线跟踪[J]. 计算机学报, 2002, 25(9): 923-929 |
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| 作者姓名： | 秦开怀 常正义 李亚峰 王华维 曾旭 |
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| 作者单位： | 1. 清华大学计算机科学与技术系,北京,100084
2. IBM中国研究中心,北京,100085 |
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| 基金项目： | 国家自然科学基金 (5 9875 0 47，69873 0 2 5 )资助 |
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| 摘 要： | 该文利用光学映射虚对象的概念，提出了实时计算平面折射虚物体的新方法，给出了在不同情况下实时计算平面折射虚顶点的计算公式，实现了基于三维图形硬件（加速卡）加速的实时光线跟踪算法。该算法能够处理非线性平面折射和反射问题，极大地提高了真实感图形绘制和显示的速度。这对于建筑物实时漫游、实时动画和虚拟现实等领域具有非常广阔的应用前景。
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| 关 键 词： | 非线性折射 反射平面场景 实时光线跟踪 真实感图形 图形处理 计算机动画 |
| 修稿时间： | 2002-04-25 |
Real-Time Ray Tracing for Planar Scenes with Non-Linear Refractions and Reflections |
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| QIN Kai Huai ) CHANG Zheng Yi ) LI Ya Feng ) WANG Hua Wei ) ZENG Xu ) ). Real-Time Ray Tracing for Planar Scenes with Non-Linear Refractions and Reflections[J]. Chinese Journal of Computers, 2002, 25(9): 923-929 |
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| Authors: | QIN Kai Huai ) CHANG Zheng Yi ) LI Ya Feng ) WANG Hua Wei ) ZENG Xu ) ) |
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| Affiliation: | QIN Kai Huai 1) CHANG Zheng Yi 1) LI Ya Feng 1) WANG Hua Wei 1) ZENG Xu 2) 1) |
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| Abstract: | Based on the concept of virtual optical mapping objects, a new method for calculating in real time virtual objects is proposed, while formulae for computation of virtual vertices of objects in planar scenes are derived. A real time hardware accelerated ray tracing algorithm is implemented in C , dealing with non linear reflections and refractions in a unified way. It is powerful for interactive applications such as real time walkthroughs in buildings, animation and virtual reality. |
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| Keywords: | non linear refraction reflection real time ray tracing realistic graphic |
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