A Copula-Based BRDF Model

作者:Ozturk Aydin*; Kurt Murat; Bilgili Ahmet
来源:Computer Graphics Forum, 2010, 29(6): 1795-1806.
DOI:10.1111/j.1467-8659.2010.01649.x

摘要

In this paper, we introduce a novel approach for modeling surface reflection. We focus on using a family of probability distributions called Archimedean copulas as BRDF models. The Archimedean representation has an attractive property in that the multivariate distributions are characterized by their marginal distributions through a single univariate function only. It is shown that the proposed model meets the reciprocity property of reflection. Based on measured BRDF data, we demonstrate that the proposed approach provides a good approximation to BRDF. Empirical comparisons are made with some classically used BRDF models.

  • 出版日期2010