Dynamic Display of BRDFs

作者：Hullin Matthias B^*; Lensch Hendrik P A; Raskar Ramesh; Seidel Hans Peter; Ihrke Ivo

来源：Computer Graphics Forum, 2011, 30(2): 475-483.

DOI：10.1111/j.1467-8659.2011.01891.x

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 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.

• 出版日期2011