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Showing 1 to 2 of 2 for “"direct lighting"”.
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Sampling Methods in Ray-Based Global Illumination
… itself with sampling algorithms related to direct lighting, an important subset of global illumination. In this part, we develop two stage importance sampling} to sample the product of the BRDF function and a large light source such as an environment map. We then extend this method to …
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Importance Resampling for Global Illumination
… the robustness of this technique on the direct lighting problem and achieve up to a 33% variance reduction over standard techniques. We also suggest using RIS as a default BRDF sampling technique.