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题名: 基于CUDA的光线追踪优化算法研究与实现
其他题名: ON CUDA-BASED OPTIMISED RAY TRACING ALGORITHM AND ITS REALISATION
作者: 岳田爽; 赵怀慈; 花海洋
作者部门: 光电信息技术研究室
关键词: 光线追踪 ; KD树 ; CUDA ; GPU
刊名: 计算机应用与软件
ISSN号: 1000-386X
出版日期: 2015
卷号: 32, 期号:1, 页码:161-162, 198
收录类别: CSCD
产权排序: 1
摘要: 在三维场景仿真过程中,为了实现真实的光影效果,通常采用光线追踪法对场景进行渲染。光线追踪算法的核心过程是光线与场景中的片元进行相交测试,而对于一个复杂的场景,该过程计算量非常大。为了改善光线追踪算法的计算速度问题,实现一种基于CUDA(Compute Unified Device Architecture)的光线追踪算法。该算法利用GPU的并行处理能力同时结合KD-Tree加速相交测试过程,最终提高仿真场景的渲染速度。通过实验表明,该算法的KD-Tree创建性能相比传统方法提升约20%,光线追踪性能提升约6倍。
英文摘要: In three-dimensional scene simulation process,in order to achieve realistic lighting effects,ray tracing method is usually used to render the scene. The intersection test of the light and the render-element is the core process of ray tracing algorithm,and for a complex scene,the process is highly computational. We implement a ray tracing algorithm which is based on CUDA ( Compute Unified Device Architecture) . The algorithm makes use of GPU’s parallel processing capability,and combines with KD-Tree to accelerate the intersection testing process at the same time. It is demonstrated through experiment that our algorithm improves the KD-Tree creation performance about 20% compared with traditional method,and the ray tracing performance is also improved about 6 times.
语种: 中文
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/15681
Appears in Collections:光电信息技术研究室_期刊论文

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