Robot vision
Surface Reflection: Physical and Geometrical Perspectives
IEEE Transactions on Pattern Analysis and Machine Intelligence
A comprehensive physical model for light reflection
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
Reflection from layered surfaces due to subsurface scattering
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Generalization of the Lambertian model and implications for machine vision
International Journal of Computer Vision
Non-linear approximation of reflectance functions
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Illumination for computer generated pictures
Communications of the ACM
A practical model for subsurface light transport
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
A practical model for subsurface light transport
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
An Illumination Model for a Skin Layer Bounded by Rough Surfaces
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
Reflectance and Texture of Real-World Surfaces Authors
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
Testing new variants of the Beckmann-Kirchhoff model against radiance data
Computer Vision and Image Understanding
The modified Beckmann-Kirchhoff scattering theory for rough surface analysis
Pattern Recognition
A spectral BSSRDF for shading human skin
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
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A new model for the scattering of light from layered dielectrics with rough surface boundaries is introduced. The model contains a surface scattering component together with a subsurface scattering component. The former component corresponds to the roughness on the upper surface boundary and is modeled using the modified Beckmann model. The latter component accounts for both refraction due to Fresnel transmission through the layer and rough scattering at the lower layer boundary. One interesting consequence of the model is that the peak radiance is deflected away from the specular direction, a behavior that is also evident in BRDF data from human skin. By allowing independent roughness parameters for each surface boundary and controlling the contributions from the two scattering components in the outgoing radiance using a balance parameter, we can achieve excellent fits of the model to the measured BRDF data. We experiment with BRDF data from skin surface samples (human volunteers) and show that the new model outperforms alternative variants of the Beckmann model and the Lafortune et al. reflectance model. As an application in computer graphics, we also show that realistic images of 3D surfaces can be generated using the new model, by setting the values of its physical parameters.