@InProceedings{NunesMiraAndr:2017:UsDiRe,
               author = "Nunes, Mislene da Silva and Miranda Junior, Gast{\~a}o 
                         Flor{\^e}ncio and Andrade, Beatriz Trinch{\~a}o",
          affiliation = "{Universidade Federal de Sergipe} and {Universidade Federal de 
                         Sergipe} and {Universidade Federal de Sergipe}",
                title = "Using Dimensionality Reduction to Create New Materials from 
                         Tabular BRDFs",
            booktitle = "Proceedings...",
                 year = "2017",
               editor = "Torchelsen, Rafael Piccin and Nascimento, Erickson Rangel do and 
                         Panozzo, Daniele and Liu, Zicheng and Farias, Myl{\`e}ne and 
                         Viera, Thales and Sacht, Leonardo and Ferreira, Nivan and Comba, 
                         Jo{\~a}o Luiz Dihl and Hirata, Nina and Schiavon Porto, Marcelo 
                         and Vital, Creto and Pagot, Christian Azambuja and Petronetto, 
                         Fabiano and Clua, Esteban and Cardeal, Fl{\'a}vio",
         organization = "Conference on Graphics, Patterns and Images, 30. (SIBGRAPI)",
            publisher = "IEEE Computer Society",
              address = "Los Alamitos",
             keywords = "Dimensionality reduction, BRDFs, navigation.",
             abstract = "Representing 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.",
  conference-location = "Niter{\'o}i, RJ, Brazil",
      conference-year = "17-20 Oct. 2017",
                  doi = "10.1109/SIBGRAPI.2017.37",
                  url = "http://dx.doi.org/10.1109/SIBGRAPI.2017.37",
             language = "en",
                  ibi = "8JMKD3MGPAW/3PFRBLH",
                  url = "http://urlib.net/ibi/8JMKD3MGPAW/3PFRBLH",
           targetfile = "PID4960297.pdf",
        urlaccessdate = "2024, Apr. 29"
}