Results 171 to 180 of about 5,611 (211)
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A Unified Algorithm for BRDF Matching
2019This paper generalizes existing BRDF fitting algorithms presented in the literature that aims to find a mapping of the parameters of an arbitrary source material model to the parameters of a target material model. A material model in this context is a function that maps a list of parameters, such as roughness or specular color, to a BRDF.
Ron Vanderfeesten, Jacco Bikker
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View planning for BRDF acquisition
ACM SIGGRAPH 2003 Sketches & Applications, 2003The estimation of the bi-directional reflectance distribution function (BRDF) of a 3D object requires reflectance measurements under numerous viewing and lighting directions. This sketch summarizes our method to select advantageous directions.
Lang, J. +2 more
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OSA Annual Meeting, 1993
By combining scatterometry with polarimetry, a polarization dependent BRDF is measured with the potential to separate roughness, contamination, and subsurface damage. Two instruments which measure the polarization BRDF will be presented and results discussed.
Stephen C. McClain, Russell A. Chipman
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By combining scatterometry with polarimetry, a polarization dependent BRDF is measured with the potential to separate roughness, contamination, and subsurface damage. Two instruments which measure the polarization BRDF will be presented and results discussed.
Stephen C. McClain, Russell A. Chipman
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A microfacet-based BRDF generator
Proceedings of the 27th annual conference on Computer graphics and interactive techniques - SIGGRAPH '00, 2000A method is presented that takes as an input a 2D microfacet orientation distribution and produces a 4D bidirectional reflectance distribution function (BRDF). This method differs from previous microfacet-based BRDF models in that it uses a simple shadowing term which allows it to handle very general microfacet distributions while maintaining ...
Michael Ashikhmin +2 more
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BRDF Acquisition with Basis Illumination
2007 IEEE 11th International Conference on Computer Vision, 2007Realistic descriptions of surface reflectance have long been a topic of interest in both computer vision and computer graphics research. In this paper, we describe a novel and fast approach for the acquisition of bidirectional reflectance distribution functions (BRDFs). We develop a novel theory for directly measuring BRDFs in a basis representation by
Abhijeet Ghosh +3 more
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Special Interest Group on Computer Graphics and Interactive Techniques Conference Proceedings, 2022
Jiahui Fan +4 more
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Jiahui Fan +4 more
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Forward a Small-Timescale BRDF/Albedo by Multisensor Combined BRDF Inversion Model
IEEE Transactions on Geoscience and Remote Sensing, 2017In this paper, the land surface bidirectional reflectance distribution function (BRDF) and albedo on a small timescale are retrieved by the multisensor combined BRDF inversion (MCBI) model with improved accuracy. The accumulation period for this BRDF/albedo retrieval is shortened to 8 and 4 days with data from four satellite sensors, the Moderate ...
Jianguang Wen +6 more
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An Anisotropic Phong BRDF Model
Journal of Graphics Tools, 2000Abstract We present a BRDF model that combines several advantages of the various empirical models currently in use. In particular, it has intuitive parameters, is anisotropic, conserves energy, is reciprocal, has an appropriate non-Lambertian diffuse term, and is well-suited for use in Monte Carlo renderers.
Michael Ashikhmin, Peter Shirley
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Directional statistics BRDF model
2009 IEEE 12th International Conference on Computer Vision, 2009We introduce a novel parametric BRDF model that can accurately encode a wide variety of real-world isotropic BRDFs with a small number of parameters. The key observation we make is that a BRDF may be viewed as a statistical distribution on a unit hemisphere.
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