Beyond Points and Beams:Higher-Dimensional Photon Samples for Volumetric Light Transport Supplemental Document
نویسنده
چکیده
Estimating the contribution of a blurred photon plane involves the computation of an integral along the interval of overlap between the camera segment and the photon plane. In order to reduce variance introduced by this estimation, we apply control variates [Glasserman 2003] in our implementation of the photon plane estimator for homogeneous media. The concept of control variates is simple. Say we wanted to estimate the integral of some function f (x) over a domain Ω using Monte Carlo integration: ∫
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