Generalization of Lambert's reflectance model

@article{Oren1994GeneralizationOL,
  title={Generalization of Lambert's reflectance model},
  author={Michael Oren and Shree K. Nayar},
  journal={Proceedings of the 21st annual conference on Computer graphics and interactive techniques},
  year={1994}
}
  • M. Oren, S. Nayar
  • Published 1994
  • Physics, Computer Science
  • Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Lambert's model for body reflection is widely used in computer graphics. It is used extensively by rendering techniques such as radiosity and ray tracing. For several real-world objects, however, Lambert's model can prove to be a very inaccurate approximation to the body reflectance. While the brightness of a Lambertian surface is independent of viewing direction, that of a rough surface increases as the viewing direction approaches the light source direction. In this paper, a comprehensive… Expand
Statistically based reflection model for rough surfaces
  • Yinlong Sun
  • Mathematics, Engineering
  • IS&T/SPIE Electronic Imaging
  • 2003
TLDR
A new reflection model entirely using physical parameters that generates a sharp specular highlight when a surface is smooth and shows diffuse behavior when the surface is rough and will be shown through rendered images. Expand
Photometric stereo applied to diffuse surfaces that violate Lambert's law.
TLDR
It is shown that, for the special case where light sources are arranged at 90° intervals around the optical axis, standard PS is not limited to Lambertian surfaces, and standard PS performs well in simulations if the microroughness is moderate. Expand
Rendering Rough Opaque Materials with Interfaced Lambertian Microfacets
TLDR
This paper proposes a representation corresponding to a Fresnel interface lying on a Lambertian substrate, for which the multiple reflections of light between the interface and the substrate can be expressed analytically, and shows how Fresnel transmission affects the material appearance for flat and rough surfaces with isotropic and anisotropic distributions. Expand
Towards Efficient and Compact Phenomenological Representation of Arbitrary Bidirectional Surface Reflectance
TLDR
An analytical analysis and experimental justification is provided that for a given approximation order, the proposed hemispherical basis provide better approximation accuracy when compared to Zernike-based basis, while avoiding the high computational complexity inherited from such polynomials. Expand
Isotropic and Anisotropic Interfaced Lambertian Microfacets
Specular microfacet distributions have been successfully employed by many authors for representing materials glossiness, and they are generally combined with a Lambertian term that accounts for theExpand
Analysis and Approximation of Some Shape-from-Shading Models for Non-Lambertian Surfaces
  • S. Tozza, M. Falcone
  • Mathematics, Computer Science
  • Journal of Mathematical Imaging and Vision
  • 2016
TLDR
A unified mathematical formulation of some popular orthographic non-Lambertian models, considering vertical and oblique light directions as well as different viewer positions is presented, able to develop a semi-Lagrangian approximation scheme for the Oren–Nayar and the Phong model and to prove a general convergence result. Expand
Geometric attenuation factor based on scattering theory from randomly rough surface.
TLDR
This work proposes a GAF algorithm that is designed based on Maxwell's equations and the scattering, and validated on generated Gaussian surfaces that eliminated the undesired behavior of the Cook-Torrance BRDF model near the grazing angle. Expand
Inverse global illumination: recovering reflectance models of real scenes from photographs
TLDR
A lighting-independent model of the scene’s geometry and reflectance properties can be rendered with arbitrary modifications to structure and lighting via traditional rendering methods, and allows diffuse albedo to vary arbitrarily over surfaces while assuming that non-diffuse characteristics remain constant across particular regions. Expand
Rendering human skin using a multi-layer reflection model
A key element to creating realistic images is the appearance of surfaces. In order to overcome the artificial look of synthetic humans, human skin has to be modelled in all its variety. A newExpand
Experimental analysis of BRDF models
TLDR
This work evaluates several well-known analytical models in terms of their ability to fit measured BRDFs, and shows that using a sampled microfacet distribution computed from measurements improves the fit and qualitatively reproduces the measurements. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 54 REFERENCES
Reflection from layered surfaces due to subsurface scattering
TLDR
This paper presents a model for subsurface scattering in layered surfaces in terms of one-dimensional linear transport theory, and derives explicit formulas for backscattering and transmission that can be directly incorporated in most rendering systems, and a general Monte Carlo method that is easily added to a ray tracer. Expand
Predicting reflectance functions from complex surfaces
TLDR
A physically-based Monte Carlo technique for approximating bidirectional reflectance distribution functions (BRDFs) for a large class of geometries by directly simulating optical scattering, which removes most restrictions on surface microgeometry. Expand
A comprehensive physical model for light reflection
TLDR
A new general reflectance model for computer graphics is presented and provides a smooth transition from diffuse-like to specular reflection as the wavelength and incidence angle are increased or the surface roughness is decreased. Expand
A model for anisotropic reflection
TLDR
This model can be implemented easily within most rendering system, given a suitable mechanism to define and alter surface tangents, and the visual importance of anisotropy is illustrated with some pictures. Expand
Theory for off-specular reflection from roughened surfaces
The directional distribution of radiant flux reflected from roughened surfaces is analyzed on the basis of geometrical optics. The analytical model assumes that the surface consists of small,Expand
A Model for Anisotropic Reeection
A reeection and refraction model for anisotropic surfaces is introduced. The anisotropy is simulated by small cylinders (added or subtracted) distributed on the anisotropic surface. Diierent levelsExpand
Photometric studies of diffusely reflecting surfaces with applications to the brightness of the Moon
A series of light reflectivity measurements has been made on a variety of samples in a search for materials or surface textures which might reproduce the photometric properties of the lunar surface,Expand
Lunar surface roughness - Shadowing and thermal emission.
A statistical model of the moon's surface roughness is used in an attempt to explain the deviations of the observed gross infrared thermal emissive properties of the moon from those characterizing aExpand
An improved illumination model for shaded display
TLDR
Consideration of all of these factors allows the shader to accurately simulate true reflection, shadows, and refraction, as well as the effects simulated by conventional shaders. Expand
Geometrical modes as a general method to treat diffuse interreflections in radiometry
The problem of interreflections for Lambertian surfaces of arbitrary shape and with varying reflectance is of interest for many practical applications. We present a general method to approach thisExpand
...
1
2
3
4
5
...