Testing Monte-Carlo Global Illumination Methods with Analytically Computable Scenes

László Szirmay-Kalos, László Kovács, Ali Mohamed Abbas

Dept. of Control Engineering and Information Technology

Technical University of Budapest





The paper presents analytically computable scenes for testing global illumination algorithms with arbitrary BRDFs. The task of these scenes is to enable us to compare global illumination algorithms and check the correctness of the implementation. In our first approach a criterion is given that makes the radiance constant for an arbitrary closed scene allowing either arbitrary BRDFs or arbitrary lightsource models. In the second approach the geometry is assumed to be an internal surface of a sphere. Here homogeneous diffuse and mirror like reflections can be tested with arbitrary lightsource models.

Keywords: Global illumination, BRDF sampling, albedo, test scenes, Monte-Carlo integration, rendering equation

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