A Bidirectional Scattering Function Reconstruction Method Based on Optimization of Microrelief Heights Distribution

V. Sokolov, D. Zhdanov, I. Potemin, A. Zhdanov, N. Deryabin
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引用次数: 4

Abstract

The work is devoted to the development of a new method for reconstructing the scattering properties of a rough surface, which is described using the bi-directional scattering distribution function (BSDF). There are several different methods of BSDF reconstruction using various approaches. However, they all have their drawbacks: for example, a method based on modeling the measured distribution of heights often requires a complicated fit apart from the expensive measurements themselves, various analytical methods are usu-ally operable within the average roughness values with their standard distribution, and a rather good and universal method for optimizing the normals distribution density does not support internal reflections on the elements of the roughest surface. The proposed solution uses the geometry models of the rough surface, which allows simulating a physically more accurate propagation of light through the rough surface taking into account internal reflections, and hence a more accurate reconstruction of the bidirectional scattering distribution function. The results of BSDF reconstruction with the new method are proved by comparison with measurement results.
基于微地形高度分布优化的双向散射函数重建方法
本文研究了一种用双向散射分布函数(BSDF)描述粗糙表面散射特性的新方法。有几种不同的BSDF重建方法,使用不同的方法。然而,它们都有自己的缺点:例如,基于高度测量分布建模的方法除了测量本身昂贵之外,往往需要复杂的拟合,各种分析方法通常可以在其标准分布的平均粗糙度值内操作,并且优化正态分布密度的相当好的通用方法不支持最粗糙表面元素的内部反射。提出的解决方案使用粗糙表面的几何模型,可以模拟物理上更精确的光通过粗糙表面的传播,并考虑到内部反射,从而更准确地重建双向散射分布函数。通过与实测结果的比较,验证了新方法对BSDF的重构结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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