Browsing 31-Issue 4 by Subject "and texture"

Now showing items 1-6 of 6

    • Accurate Fitting of Measured Reflectances Using a Shifted Gamma Micro-facet Distribution 

      Bagher, Mohammad Mahdi; Soler, Cyril; Holzschuch, Nicolas (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Material models are essential to the production of photo-realistic images. Measured BRDFs provide accurate representation with complex visual appearance, but have larger storage cost. Analytical BRDFs such as Cook- Torrance ...

    • Example-Based Fractured Appearance 

      Glondu, Loeiz; Muguercia, Lien; Marchal, Maud; Bosch, Carles; Rushmeier, Holly; Dumont, Georges; Drettakis, George (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      A common weathering effect is the appearance of cracks due to material fractures. Previous exemplar-based aging and weathering methods have either reused images or sought to replicate observed patterns exactly. We introduce ...

    • ISHair: Importance Sampling for Hair Scattering 

      Ou, Jiawei; Xie, Feng; Krishnamachari, Parashar; Pellacini, Fabio (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present an importance sampling method for the bidirectional scattering distribution function (bsdf) of hair. Our method is based on the multi-lobe hair scattering model presented by Sadeghi et al. [SPJT10]. We reduce ...

    • Parameterization-Aware MIP-Mapping 

      Manson, Josiah; Schaefer, Scott (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present a method of generating mipmaps that takes into account the distortions due to the parameterization of a surface. Existing algorithms for generating mipmaps assume that the texture is isometrically mapped to the ...

    • Pre-convolved Radiance Caching 

      Scherzer, Daniel; Nguyen, Chuong; Ritschel, Tobias; Seidel, Hans-Peter (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      The incident indirect light over a range of image pixels is often coherent. Two common approaches to exploit this inter-pixel coherence to improve rendering performance are Irradiance Caching and Radiance Caching. Both ...

    • A Statistical Method for SVBRDF Approximation from Video Sequences in General Lighting Conditions 

      Palma, Gianpaolo; Callieri, Marco; Dellepiane, Matteo; Scopigno, Roberto (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present a statistical method for the estimation of the Spatially Varying Bidirectional Reflectance Distribution Function (SVBRDF) of an object with complex geometry, starting from video sequences acquired with fixed but ...