Results 11 to 20 of about 4,498 (215)

Analysis of Extracting Prior BRDF from MODIS BRDF Data [PDF]

Remote Sensing, 2016
Many previous studies have attempted to extract prior reflectance anisotropy knowledge from the historical MODIS Bidirectional Reflectance Distribution Function (BRDF) product based on land cover or Normalized Difference Vegetation Index (NDVI) data.
Hu Zhang, Ziti Jiao, Yadong Dong, Peng Du, Yang Li, Yi Lian, Tiejun Cui   +6 more
doaj   +3 more sources

Rational BRDF [PDF]

IEEE Transactions on Visualization and Computer Graphics, 2012
International audienceOver the last two decades, much effort has been devoted to accurately measure Bidirectional Reflectance Distribution Functions (BRDFs) of real-world materials and to use efficiently the resulting data for rendering. Because of their
Poulin, Pierre, C. Schlick, Schlick, Christophe, Salazar Celis, Oliver, Pierre, Poulin, X. Granier, Oliver Salazar Celis, P. Poulin, Cuyt, Annie A.M., Annie, Cuyt, Pacanowski, Romain, Granier, Xavier, A. Cuyt, Salazar-Celis, Oliver, R. Pacanowski   +14 more
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A copula-based BRDF model

Computer Graphics Forum, 2010
In this paper, we introduce a novel approach for modeling surface reflection. We focus on using a family of probability distributions called Archimedean copulas as BRDF models.
Kurt M., Bilgili A., Öztürk A.
core   +5 more sources

Directional Applicability Analysis of Albedo Retrieval Using Prior BRDF Knowledge

Remote Sensing
Surface albedo measures the proportion of incoming solar radiation reflected by the Earth’s surface. Accurate albedo retrieval from remote sensing data usually requires sufficient multi-angular observations to account for the surface reflectance ...
Hu Zhang, Qianrui Xi, Junqin Xie, Xiaoning Zhang, Lei Chen, Yi Lian, Hongtao Cao, Yan Liu, Lei Cui, Yadong Dong   +9 more
doaj   +2 more sources

ALTA: A BRDF Analysis Library

, 2014
In this document, we introduce ALTA, a cross platform generic open-source library for Bidirectional Reflectance Distribution Function (BRDF) analysis.
Pacanowski, Romain, Belcour, Laurent, Barla, Pascal   +2 more
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Perceived quality of BRDF models

Computer Graphics Forum
Material appearance is commonly modeled with the Bidirectional Reflectance Distribution Functions (BRDFs), which need to trade accuracy for complexity and storage cost.
Kavoosighafi, Behnaz, Mantiuk, Rafal K., Unger, Jonas, Miandji, Ehsan, Hajisharif, Saghi   +4 more
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Importance Sampling BRDF Derivatives

ACM Transactions on Graphics
We propose a set of techniques to efficiently importance sample the derivatives of a wide range of BRDF models. In differentiable rendering, BRDFs are replaced by their differential BRDF counterparts which are real-valued and can have negative values ...
Li, Tzu-Mao, Belhe, Yash, Ramamoorthi, Ravi, Xu, Bing, Bangaru, Sai Praveen   +4 more
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BRDF-NeRF: Neural radiance fields with optical satellite images and BRDF modelling

International Journal of Applied Earth Observations and Geoinformation
Neural radiance fields (NeRF) have gained prominence as a machine learning technique for representing 3D scenes and estimating the bidirectional reflectance distribution function (BRDF) from multiple images. However, most existing research has focused on
Lulin Zhang, Ewelina Rupnik, Tri Dung Nguyen, Stéphane Jacquemoud, Yann Klinger   +4 more
doaj   +3 more sources

Dynamic Display of BRDFs [PDF]

Computer Graphics Forum, 2011
AbstractThis paper deals with the challenge of physically displaying reflectance, i.e., the appearance of a surface and its variation with the observer position and the illuminating environment. This is commonly described by the bidirectional reflectance distribution function (BRDF).
Hullin, Matthias B., Lensch, Hendrik P. A., Raskar, Ramesh, Seidel, Hans-Peter, Ihrke, Ivo   +4 more
openaire   +3 more sources

BRDF Editor [PDF]

, 2019
Title: BRDF Editor Author: Jan Waltl Department: Department of Software and Computer Science Education Supervisor: RNDr. Josef Pelik'an, Department of Software and Computer Science Education Abstract: The goal of this thesis is to create a working ...
Waltl, Jan
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