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Reference TypeConference Paper (Conference Proceedings)
Last Update2017: administrator
Metadata Last Update2020: administrator
Citation KeyNunesMiraAndr:2017:UsDiRe
TitleUsing Dimensionality Reduction to Create New Materials from Tabular BRDFs
DateOct. 17-20, 2017
Access Date2021, Jan. 21
Number of Files1
Size5679 KiB
Context area
Author1 Nunes, Mislene da Silva
2 Miranda Junior, Gastão Florêncio
3 Andrade, Beatriz Trinchão
Affiliation1 Universidade Federal de Sergipe
2 Universidade Federal de Sergipe
3 Universidade Federal de Sergipe
EditorTorchelsen, Rafael Piccin
Nascimento, Erickson Rangel do
Panozzo, Daniele
Liu, Zicheng
Farias, Mylène
Viera, Thales
Sacht, Leonardo
Ferreira, Nivan
Comba, João Luiz Dihl
Hirata, Nina
Schiavon Porto, Marcelo
Vital, Creto
Pagot, Christian Azambuja
Petronetto, Fabiano
Clua, Esteban
Cardeal, Flávio
Conference NameConference on Graphics, Patterns and Images, 30 (SIBGRAPI)
Conference LocationNiterói, RJ
Book TitleProceedings
PublisherIEEE Computer Society
Publisher CityLos Alamitos
Tertiary TypeFull Paper
History2017-08-21 21:34:07 :: -> administrator ::
2020-02-19 02:01:34 :: administrator -> :: 2017
Content and structure area
Is the master or a copy?is the master
Content Stagecompleted
Content TypeExternal Contribution
KeywordsDimensionality reduction, BRDFs, navigation.
AbstractRepresenting reality in computer graphics requires simulating the appearance of real-world materials. Bidirectional Reflectance Distribution Functions (BRDFs) are commonly used to perform this task, as they represent the appearance of a material through the quotient between the reflected radiance and the incoming irradiance at this point. Acquiring the BRDF of a real material is an expensive task due to its high dimensionality, so strategies to take advantage of already existing measurements are a promising solution. In this paper we present an approach to create BRDFs for new materials from a basis of tabular representations of BRDFs. We apply dimensionality reduction in this basis and then we perform a triangulation in the resulting reduced space. Thus, any position in this reduced space can be used to create a new material: using the triangulation, we estimate coefficients that can be used to find the BRDF of this new material by interpolating materials in the original space. In addition, we present a technique to navigate in this reduced space that enables the creation of several different materials from two materials in the basis. This approach provides a wide range of new materials based on real measurements without the need to acquire new BRDFs. We show that our navigation is coherent and that it yields a smooth transition between materials.
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