An Improved Visible Normal Sampling Routine for the Beckmann Distribution
نویسنده
چکیده
Recently, Heitz and D’Eon [2014] proposed a method for importance sampling the distribution of visible normals in the context of microfacet BSDF models. One of their sampling routines internally relies on a discontinuous mapping, which can cause problems in conjunction with Quasi Monte Carlo sampling and Markov Chain Monte Carlo integration. In this report, we develop an alternative method that does not have this drawback.
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تاریخ انتشار 2014