Results 171 to 180 of about 4,498 (215)
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ACM SIGGRAPH 2007 posters, 2007
We propose a BRDF display that reproduces the textures of a light field. Conventional displays are now high-definition (HD). HDdisplays are ideal in terms of their excellent resolution. This, of course begs, the questions of whether resolution is the most important factor when judging the quality of a display?
Takafumi Koike, Takeshi Naemura
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We propose a BRDF display that reproduces the textures of a light field. Conventional displays are now high-definition (HD). HDdisplays are ideal in terms of their excellent resolution. This, of course begs, the questions of whether resolution is the most important factor when judging the quality of a display?
Takafumi Koike, Takeshi Naemura
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The D-BRDF model as a basis for BRDF acquisition
ACM SIGGRAPH 2007 posters, 2007Real world materials exhibit characteristic surface reflectance, such as glossy or specular highlights, and anisotropy that need to be modeled accurately for realistic rendering applications. The surface reflectance of a material is formalized by the notion of the Bidirectional Reflectance Distribution Function (BRDF).
Abhijeet Ghosh, Wolfgang Heidrich
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IEEE Transactions on Visualization and Computer Graphics, 2007
The properties of virtually all real-world materials change with time, causing their bidirectional reflectance distribution functions (BRDFs) to be time varying. However, none of the existing BRDF models and databases take time variation into consideration; they represent the appearance of a material at a single time instance. In this paper, we address
Bo Sun +4 more
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The properties of virtually all real-world materials change with time, causing their bidirectional reflectance distribution functions (BRDFs) to be time varying. However, none of the existing BRDF models and databases take time variation into consideration; they represent the appearance of a material at a single time instance. In this paper, we address
Bo Sun +4 more
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Parameterization of Tabulated BRDFs
Proceedings of the 33rd Computer Graphics International, 2016Measured or simulated data for bidirectional reflectance distribution functions (BRDFs) of various materials is typically stored in a tabulated form by discretizing incoming and outgoing directions over the hemisphere. Since reflected radiance is usually strongly nonuniform over the hemisphere, a uniform discretization of a BRDF usually leads to poor ...
Ian Mallett 0001, Cem Yuksel
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To derive BRDF archetypes from POLDER-3 BRDF database
2014 IEEE Geoscience and Remote Sensing Symposium, 2014In this study, based on kernel-driven linear BRDF model, a new spectral vegetation index named anisotropic flat index (AFX) and a hotspot kernel function are described. Anisotropic Flat Index (AFX), which is created by normalization of net scattering magnitude with the isotropic scattering, can summarize the variability of basic dome-bowl anisotropic ...
Ziti Jiao +3 more
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ACM SIGGRAPH 2011 Emerging Technologies, 2011
Traditional computer displays are designed to be invariant to illumination and viewing conditions. However, this is not what the real world behaves like. Real materials reflect the surrounding light in a characteristic way that depends on the angles of illumination and observation.
Matthias B. Hullin +4 more
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Traditional computer displays are designed to be invariant to illumination and viewing conditions. However, this is not what the real world behaves like. Real materials reflect the surrounding light in a characteristic way that depends on the angles of illumination and observation.
Matthias B. Hullin +4 more
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Proceedings of the 2008 workshop on Immersive projection technologies/Emerging display technologiges, 2008
We developed a bidirectional reflectance distribution function (BRDF) display that reproduces the texture of objects and rays of a light field. Our BRDF display is based on the technology used in integral photography (IP), which was originally investigated for use in 3D displays.
Takafumi Koike, Takeshi Naemura
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We developed a bidirectional reflectance distribution function (BRDF) display that reproduces the texture of objects and rays of a light field. Our BRDF display is based on the technology used in integral photography (IP), which was originally investigated for use in 3D displays.
Takafumi Koike, Takeshi Naemura
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Barycentric parameterizations for isotropic BRDFs
IEEE Transactions on Visualization and Computer Graphics, 2005A bidirectional reflectance distribution function (BRDF) is often expressed as a function of four real variables: two spherical coordinates in each of the the "incoming" and "outgoing" directions. However, many BRDFs reduce to functions of fewer variables. For example, isotropic reflection can be represented by a function of three variables.
Michael M. Stark +2 more
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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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An Adaptive BRDF Fitting Metric
Computer Graphics Forum, 2020 AbstractWe propose a novel image‐driven fitting strategy for isotropic BRDFs. Whereas existing BRDF fitting methods minimize a cost function directly on the error between the fitted analytical BRDF and the measured isotropic BRDF samples, we also take into account the resulting material appearance in visualizations of the BRDF.
James C. Bieron, Pieter Peers
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