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- W156788573 abstract "Abstract Measured bidirectional reflectance distribution function (BRDF) data have been used to represent complex interaction between lights and surface materials for photorealistic rendering. However, their massive size makes it hard to adopt them in practical rendering applications. In this paper, we propose an adaptive method for B-spline volume representation of measured BRDF data. It basically performs approximate B-spline volume lofting, which decomposes the problem into three sub-problems of multiple B-spline curve fitting along u-, v-, and w-parametric directions. Especially, it makes the efficient use of knots in the multiple B-spline curve fitting and thereby accomplishes adaptive knot placement along each parametric direction of a resulting B-spline volume. The proposed method is quite useful to realize efficient data reduction while smoothing out the noises and keeping the overall features of BRDF data well. By applying the B-spline volume models of real materials for rendering, we show that the B-spline volume models are effective in preserving the features of material appearance and are suitable for representing BRDF data." @default.
- W156788573 created "2016-06-24" @default.
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- W156788573 date "2014-12-06" @default.
- W156788573 modified "2023-09-27" @default.
- W156788573 title "Adaptive B-spline volume representation of measured BRDF data for photorealistic rendering" @default.
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- W156788573 doi "https://doi.org/10.1016/j.jcde.2014.11.001" @default.
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