SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Measuring and modeling anisotropic reflection
SIGGRAPH '92 Proceedings of the 19th annual conference on Computer graphics and interactive techniques
Combined Rendering of Polarization and Fluorescence Effects
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
A reflectance model for computer graphics
SIGGRAPH '81 Proceedings of the 8th annual conference on Computer graphics and interactive techniques
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
Efficient isotropic BRDF measurement
EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
On cross-validation and resampling of BRDF data measurements
Proceedings of the 21st spring conference on Computer graphics
A reflectance model for diffuse fluorescent surfaces
Proceedings of the 4th international conference on Computer graphics and interactive techniques in Australasia and Southeast Asia
Color images visible under UV light
ACM SIGGRAPH 2007 papers
Experimental analysis of BRDF models
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
Computer-aided appearance design based on BRDF measurements
Computer-Aided Design
Spectralization: reconstructing spectra from sparse data
EGSR'10 Proceedings of the 21st Eurographics conference on Rendering
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part VII
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In fluorescent materials, light from a certain band of incident wavelengths is reradiated at longer wavelengths, i.e., with a reduced per-photon energy. While fluorescent materials are common in everyday life, they have received little attention in computer graphics. Especially, no bidirectional reradiation measurements of fluorescent materials have been available so far. In this paper, we extend the well-known concept of the bidirectional reflectance distribution function (BRDF) to account for energy transfer between wavelengths, resulting in a Bispectral Bidirectional Reflectance and Reradiation Distribution Function (bispectral BRRDF). Using a bidirectional and bispectral measurement setup, we acquire reflectance and reradiation data of a variety of fluorescent materials, including vehicle paints, paper and fabric, and compare their renderings with RGB, RGBxRGB, and spectral BRDFs. Our acquisition is guided by a principal component analysis on complete bispectral data taken under a sparse set of angles. We show that in order to faithfully reproduce the full bispectral information for all other angles, only a very small number of wavelength pairs needs to be measured at a high angular resolution.