Now showing items 1-20 of 41

    • ALTA: A BRDF Analysis Library 

      Belcour, Laurent; Barla, Pascal; Pacanowski, Romain (The Eurographics Association, 2014)
      In this document, we introduce ALTA, a cross platform generic open-source library for Bidirectional Reflectance Distribution Function (BRDF) analysis. Among others, ALTA permits to estimate BRDF models parameters from ...
    • Appearance of Interfaced Lambertian Microfacets, using STD Distribution 

      Ribardière, M.; Meneveaux, D.; Bringier, B.; Simonot, L. (The Eurographics Association, 2017)
      This paper presents the use of Student’s T-Distribution (STD) with interfaced Lambertian (IL) microfacets. The resulting model increases the range of materials while providing a very accurate adjustment of appearance. STD ...
    • BTF-based Material Representations: Current Challenges 

      Ruiters, R.; Klein, R. (The Eurographics Association, 2013)
      The development of Bidirectional Texture Functions (BTFs) has made it possible for a wide range of different materials to acquire their characteristic appearance from a real-world counterpart and reproduce it faithfully ...
    • Challenges in Appearance Capture and Predictive Modeling of Textile Materials 

      Castillo, Carlos; Aliaga, Carlos; López-Moreno, Jorge (The Eurographics Association, 2017)
      The appearance of cloth is the result of complex light interactions within the structures present in textile materials, particularly challenging due to their multi-scale nature. In addition to the inherent complexity of ...
    • Diffraction Prediction in HDR Measurements 

      Lucat, Antoine; Hegedus, R.; Pacanowski, Romain (The Eurographics Association, 2017)
      Modern imaging techniques have proved to be very efficient to recover a scene with high dynamic range values. However, this high dynamic range can introduce star-burst patterns around highlights arising from the diffraction ...
    • DOME II: A Parallelized BTF Acquisition System 

      Schwartz, C.; Sarlette, R.; Weinmann, M.; Klein, R. (The Eurographics Association, 2013)
      Bidirectional Texture Functions (BTFs) provide a realistic depiction of the appearance of many real-world materials as they contain the spatially varying light scattering behavior of the material surface. Since editing of ...
    • The Effects of Digital Cameras Optics and Electronics for Material Acquisition 

      Holzschuch, Nicolas; Pacanowski, Romain (The Eurographics Association, 2017)
      For material acquisition, we use digital cameras and process the pictures. We usually treat the cameras as perfect pinhole cameras, with each pixel providing a point sample of the incoming signal. In this paper, we study ...
    • Experimental Analysis of BSDF Models 

      Kurt, Murat (The Eurographics Association, 2017)
      The Bidirectional Scattering Distribution Function (BSDF) describes the appearance of an optically thin, translucent material by its interaction with light at a surface point. Various BSDF models have been proposed to ...
    • Exploring Material Recognition for Estimating Reflectance and Illumination From a Single Image 

      Weinmann, Michael; Klein, Reinhard (The Eurographics Association, 2016)
      In this paper, we propose a novel approach for recovering illumination and reflectance from a single image. Our approach relies on the assumption that the surface geometry has already been reconstructed and a-priori knowledge ...
    • From Color to Appearance in the Real World 

      Ellens, M.; Mueller, G.; Lamy, F. (The Eurographics Association, 2013)
      X-Rite's declared ambition is to create a digital ecosystem for appearance; a daunting challenge that has many dimensions and has not been accomplished so far. In this short paper we sketch a path from color to full ...
    • Frontmatter: Eurographics 2015 Workshop on Material Appearance Modeling 

      Klein, Reinhard; Rushmeier, Holly (The Eurographics Association, 2015)
    • Gaze Analysis of BRDF Distortions 

      Filip, J.; Havran, V.; Myszkowski, K. (The Eurographics Association, 2016)
      BRDFs are currently used as a standard representation of material surface reflectance properties either in the from of tabulated measurements or a parametric model. However, the compression of tabulated representations as ...
    • Geometric Accuracy Analysis of Stationary BTF Gonioreflectometers 

      Havran, V. (The Eurographics Association, 2015)
      The accurate BTF data representation requires specialized measurement gantries, some of them designed as gonireflectometers. These consist of an illumination source and a camera mounted on two robotic arms, one degree of ...
    • Grand Challenges: Material Models in the Automotive Industry 

      Schregle, R.; Denk, C.; Slusallek, P.; Glencross, M. (The Eurographics Association, 2013)
      Material reflectance definitions are core to high fidelity visual simulation of objects within a compelling 3D scene. In the automotive industry these are used across the entire business process: from conceptualisation of ...
    • High-Quality Multi-Spectral Reflectance Acquisition with X-Rite TAC7 

      Merzbach, Sebastian; Weinmann, Michael; Klein, Reinhard (The Eurographics Association, 2017)
      When relighting digitized objects, strong color deviations can arise depending on the illumination conditions if the object’s reflectance is only captured in RGB. To guarantee color-correct simulations, it is therefore of ...
    • Identifying Diffraction Effects in Measured Reflectances 

      Holzschuch, N.; Pacanowski, R. (The Eurographics Association, 2015)
      There are two different physical models connecting the micro-geometry of a surface and its physical reflectance properties (BRDF). The first, Cook-Torrance, assumes geometrical optics: light is reflected and masked by the ...
    • Image-based Remapping of Material Appearance 

      Sztrajman, Alejandro; Krivánek, Jaroslav; Wilkie, Alexander; Weyrich, Tim (The Eurographics Association, 2017)
      Digital 3D content creation requires the ability to exchange assets across multiple software applications. For many 3D asset types, standard formats and interchange conventions are available. For material definitions, ...
    • In Praise of an Alternative BRDF Parametrization 

      Barla, P.; Belcour, L.; Pacanowski, R. (The Eurographics Association, 2015)
      In this paper, we extend the work of Neumann et al. [NNSK99] and Stark et al. [SAS05] to a pair of 4D BRDF parameterizations with explicit changes of variables. We detail their mathematical properties and relationships to ...
    • Interactive Appearance Design in the Presence of Optically Complex 

      Schroeder, K.; Zincke, A. (The Eurographics Association, 2013)
      In this position paper, we discuss the usability of different material representations for interactive appearance design in the context of visual prototyping. We emphasize the importance of methods explicitly considering ...
    • Interactive Appearance Prediction for Cloudy Beverages 

      Dal Corso, Alessandro; Frisvad, Jeppe Revall; Kjeldsen, Thomas Kim; Bærentzen, Jakob Andreas (The Eurographics Association, 2016)
      Juice appearance is important to consumers, so digital juice with a slider that varies a production parameter or changes juice content is useful. It is however challenging to render juice with scattering particles quickly ...