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- W4210245889 abstract "Monte-Carlo path tracing algorithms for computer graphics require that given an incident light ray at a surface an outgoing direction can be computed with a distribution given by the magnitude of the bidirectional reflectance distribution function (BRDF). For analytic reflectance functions this can be done using various techniques including inverting the function, or tabulating some representation of the inverse. However, measured BRDF data sets are too large for this to be practical. We present a method to generate reflection rays distributed according to the magnitude of the BRDF. The method relies on a wavelet-based representation of the BRDF. This representation is efficient and compact, allowing large, anisotropic measured BRDF data sets to be represented with a few thousand coefficients. In particular, we exploit the wavelet representation to quickly compute integrals over ranges of the BRDF." @default.
- W4210245889 created "2022-02-08" @default.
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- W4210245889 date "2008-06-28" @default.
- W4210245889 modified "2023-09-26" @default.
- W4210245889 title "Generating Reflected Directions from BRDF Data" @default.
- W4210245889 doi "https://doi.org/10.1111/1467-8659.16.3conferenceissue.30" @default.
- W4210245889 hasPublicationYear "2008" @default.
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