Dynamic Display of BRDFs
Dynamic Display of BRDFs
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BRDF的动态显示
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Ivo Ihrke
中科院分区：
文献类型：
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作者：
M. Hullin;H. Lensch;R. Raskar;H. Seidel;Ivo Ihrke
本文讨论了物理显示反射率的挑战，即表面的外观及其随观察者位置和照明环境的变化。这通常由双向反射分布函数 (BRDF) 来描述。我们提供了 BRDF 显示的标准目录，并概述了一些以光学无源方式解决问题的正交方法。我们的具体实现基于液体表面，我们在液体表面上激发波以实现不同程度的各向异性粗糙度。结果表明，表面法线的概率密度函数遵循高斯分布，类似于大多数已建立的 BRDF 模型。
This paper deals with the challenge of physically displaying reflectance, i.e., the appearance of a surface and its variation with the observer position and the illuminating environment. This is commonly described by the bidirectional reflectance distribution function (BRDF). We provide a catalogue of criteria for the display of BRDFs, and sketch a few orthogonal approaches to solving the problem in an optically passive way. Our specific implementation is based on a liquid surface, on which we excite waves in order to achieve a varying degree of anisotropic roughness. The resulting probability density function of the surface normal is shown to follow a Gaussian distribution similar to most established BRDF models.