A comprehensive physical model for light reflection
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
Predicting reflectance functions from complex surfaces
SIGGRAPH '92 Proceedings of the 19th 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
Generalization of Lambert's reflectance model
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Non-linear approximation of reflectance functions
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
A framework for realistic image synthesis
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
A microfacet-based BRDF generator
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
A Reflectance Model for Computer Graphics
ACM Transactions on Graphics (TOG)
An anisotropic phong BRDF model
Journal of Graphics Tools
Illumination for computer generated pictures
Communications of the ACM
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Efficient isotropic BRDF measurement
EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
Physically Based Rendering: From Theory to Implementation
Physically Based Rendering: From Theory to Implementation
Efficient BRDF importance sampling using a factored representation
ACM SIGGRAPH 2004 Papers
Barycentric Parameterizations for Isotropic BRDFs
IEEE Transactions on Visualization and Computer Graphics
Progressively-refined reflectance functions from natural illumination
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Experimental analysis of BRDF models
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
Image-based BRDF measurement including human skin
EGWR'99 Proceedings of the 10th Eurographics conference on Rendering
Technical Section: Linear approximation of Bidirectional Reflectance Distribution Functions
Computers and Graphics
Representing BRDFs using SOMs and MANs
ACM SIGGRAPH Computer Graphics
Family of Energy Conserving Glossy Reflection Models
ICCS '08 Proceedings of the 8th international conference on Computational Science, Part II
An anisotropic BRDF model for fitting and Monte Carlo rendering
ACM SIGGRAPH Computer Graphics - Visual Research, Evaluation and Assessment in the Age of Computer Graphics
BRDF models for accurate and efficient rendering of glossy surfaces
ACM Transactions on Graphics (TOG)
Real-time shading with filtered importance sampling
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
Sketch and paint-based interface for highlight modeling
SBM'08 Proceedings of the Fifth Eurographics conference on Sketch-Based Interfaces and Modeling
Representing BRDF by wavelet transformation of pair-copula constructions
Proceedings of the 28th Spring Conference on Computer Graphics
Anisotropic spherical Gaussians
ACM Transactions on Graphics (TOG)
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We present a mathematical framework for enforcing energy conservation in a bidirectional reflectance distribution function (BRDF) by specifying halfway vector distributions in simple two-dimensional domains. Energy-conserving BRDFs can produce plausible rendered images with accurate reflectance behavior, especially near grazing angles. Using our framework, we create an empirical BRDF that allows easy specification of diffuse, specular, and retroreflective materials. We also present a second BRDF model that is useful for data fitting; although it does not preserve energy, it uses the same halfway vector domain as the first model. We show that this data-fitting BRDF can be used to match measured data extremely well using only a small set of parameters. We believe that this is an improvement over table-based lookups and factored versions of BRDF data.