Now showing items 1-20 of 70

    • An Adaptive Metric for BRDF Appearance Matching 

      Bieron, James; Peers, Pieter (The Eurographics Association, 2020)
      Image-based BRDF matching is a special case of inverse rendering, where the parameters of a BRDF model are optimized based on a photograph of a homogeneous material under natural lighting. Using a perceptual image metric, ...
    • 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 ...
    • Bonn Appearance Benchmark 

      Merzbach, Sebastian; Klein, Reinhard (The Eurographics Association, 2020)
      There is a general shortage of standardized comparisons in the field of appearance modeling. We therefore introduce a benchmark for assessing the quality of reflectance models on a dataset of high quality material measurements ...
    • 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 ...
    • Comparative Study of Layered Material Models 

      Bati, Mégane; Pacanowski, Romain; Barla, Pascal (The Eurographics Association, 2019)
      The accurate reproduction of layered materials is an important part of physically-based rendering applications. Since no exact analytical model exists for any configuration of layer stacks, available models make approximations. ...
    • Deep Dual Loss BRDF Parameter Estimation 

      Boss, Mark; Groh, Fabian; Herholz, Sebastian; Lensch, Hendrik P. A. (The Eurographics Association, 2018)
      Surface parameter estimation is an essential field in computer games and movies. An exact representation of a real-world surface allows for a higher degree of realism. Capturing or artistically creating these materials is ...
    • 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 ...
    • Estimating Homogeneous Data-driven BRDF Parameters from a Reflectance Map under Known Natural Lighting 

      Cooper, Victoria L.; Bieron, James C.; Peers, Pieter (The Eurographics Association, 2019)
      In this paper we demonstrate robust estimation of the model parameters of a fully-linear data-driven BRDF model from a reflectance map under known natural lighting. To regularize the estimation of the model parameters, we ...
    • 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 ...
    • Fresnel Equations Considered Harmful 

      Hoffman, Naty (The Eurographics Association, 2019)
      Microfacet shading models in film and game production have long used a simple approximation to the Fresnel equations, published by Schlick in 1994. Recently a growing number of film studios have transitioned to using the ...
    • 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)
    • Frontmatter: Eurographics 2018 Workshop on Material Appearance Modeling 

      Klein, Reinhard; Rushmeier, Holly (The Eurographics Association, 2018)
    • 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 ...
    • A Genetic Algorithm Based Heterogeneous Subsurface Scattering Representation 

      Kurt, Murat (The Eurographics Association, 2020)
      In this paper, we present a novel heterogeneous subsurface scattering (sss) representation, which is based on a combination of Singular Value Decomposition (SVD) and genetic optimization techniques. To find the best ...