Browsing by Subject "Fourier"
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5D Covariance Tracing for Efficient Defocus and Motion Blur
(2012-11-16)The rendering of effects such as motion blur and depth-of-field requires costly 5D integrals. We dramatically accelerate their computation through adaptive sampling and reconstruction based on the prediction of the anisotropy ...
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A Frequency Analysis of Monte-Carlo and other Numerical Integration Schemes
(2011-12-14)The numerical calculation of integrals is central to many computer graphics algorithms such as Monte-Carlo Ray Tracing. We show that such methods can be studied using Fourier analysis. Numerical error is shown to correspond ...