Now showing items 101-120 of 245

    • 3D Motion Completion in Crowded Scenes 

      Gafni, Niv; Sharf, Andrei (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Crowded motions refer to multiple objects moving around and interacting such as crowds, pedestrians and etc. We capture crowded scenes using a depth scanner at video frame rates. Thus, our input is a set of depth frames ...
    • Real-time Bas-Relief Generation from Depth-and-Normal Maps on GPU 

      Ji, Zhongping; Sun, Xianfang; Li, Shi; Wang, Yigang (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      To design a bas-relief from a 3D scene is an inherently interactive task in many scenarios. The user normally needs to get instant feedback to select a proper viewpoint. However, current methods are too slow to facilitate ...
    • Piecewise-Planar 3D Reconstruction with Edge and Corner Regularization 

      Boulch, Alexandre; Gorce, Martin de La; Marlet, Renaud (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      This paper presents a method for the 3D reconstruction of a piecewise-planar surface from range images, typically laser scans with millions of points. The reconstructed surface is a watertight polygonal mesh that conforms ...
    • Compressed Manifold Modes for Mesh Processing 

      Neumann, Thomas; Varanasi, Kiran; Theobalt, Christian; Magnor, Marcus; Wacker, Markus (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      This paper introduces compressed eigenfunctions of the Laplace-Beltrami operator on 3D manifold surfaces. They constitute a novel functional basis, called the compressed manifold basis, where each function has local support. ...
    • Feature-Preserving Surface Completion Using Four Points 

      Harary, Gur; Tal, Ayellet; Grinspun, Eitan (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a user-guided, semi-automatic approach to completing large holes in a mesh. The reconstruction of the missing features in such holes is usually ambiguous. Thus, unsupervised methods may produce unsatisfactory ...
    • Efficient Encoding of Texture Coordinates Guided by Mesh Geometry 

      Vása, Libor; Brunnett, Guido (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      In this paper, we investigate the possibilities of efficient encoding of UV coordinates associated with vertices of a triangle mesh. Since most parametrization schemes attempt to achieve at least some level of conformality, ...
    • Discrete 2-Tensor Fields on Triangulations 

      Goes, Fernando de; Liu, Beibei; Budninskiy, Max; Tong, Yiying; Desbrun, Mathieu (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Geometry processing has made ample use of discrete representations of tangent vector fields and antisymmetric tensors (i.e., forms) on triangulations. Symmetric 2-tensors, while crucial in the definition of inner products ...
    • Designing N-PolyVector Fields with Complex Polynomials 

      Diamanti, Olga; Vaxman, Amir; Panozzo, Daniele; Sorkine-Hornung, Olga (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We introduce N-PolyVector fields, a generalization of N-RoSy fields for which the vectors are neither necessarily orthogonal nor rotationally symmetric. We formally define a novel representation for N-PolyVectors as the ...
    • Preface and Table of Contents 

      Thomas Funkhouser and Shi-Min Hu (The Eurographics Association and Blackwell Publishing Ltd., 2014)
    • Probabilistic Visibility Evaluation using Geometry Proxies 

      Billen, Niels; Lagae, Ares; Dutré, Philip (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Evaluating the visibility between two points is a fundamental problem for ray-tracing and path-tracing algorithms. Ideally, visibility computations are organized such that a minimum number of geometric primitives need to ...
    • A Physically-Based BSDF for Modeling the Appearance of Paper 

      Papas, Marios; Mesa, Krystle de; Jensen, Henrik Wann (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a novel appearance model for paper. Based on our appearance measurements for matte and glossy paper, we find that paper exhibits a combination of subsurface scattering, specular reflection, retroreflection, and ...
    • Hero Wavelength Spectral Sampling 

      Wilkie, Alexander; Nawaz, Sehera; Droske, Marc; Weidlich, Andrea; Hanika, Johannes (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a spectral rendering technique that offers a compelling set of advantages over existing approaches. The key idea is to propagate energy along paths for a small, constant number of changing wavelengths. The first ...
    • Spectral Ray Differentials 

      Elek, Oskar; Bauszat, Pablo; Ritschel, Tobias; Magnor, Marcus; Seidel, Hans-Peter (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Light refracted by a dispersive interface leads to beautifully colored patterns that can be rendered faithfully with spectral Monte-Carlo methods. Regrettably, results often suffer from chromatic noise or banding, requiring ...
    • Importance Sampling Microfacet-Based BSDFs using the Distribution of Visible Normals 

      Heitz, Eric; d'Eon, Eugene (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a new approach to microfacet-based BSDF importance sampling. Previously proposed sampling schemes for popular analytic BSDFs typically begin by choosing a microfacet normal at random in a way that is independent ...
    • Error Analysis of Estimators that use Combinations of Stochastic Sampling Strategies for Direct Illumination 

      Subr, Kartic; Nowrouzezahrai, Derek; Jarosz, Wojciech; Kautz, Jan; Mitchell, Kenny (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a theoretical analysis of error of combinations of Monte Carlo estimators used in image synthesis. Importance sampling and multiple importance sampling are popular variance-reduction strategies. Unfortunately, ...
    • Layered Reconstruction for Defocus and Motion Blur 

      Munkberg, Jacob; Vaidyanathan, Karthik; Hasselgren, Jon; Clarberg, Petrik; Akenine-Möller, Tomas (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Light field reconstruction algorithms can substantially decrease the noise in stochastically rendered images. Recent algorithms for defocus blur alone are both fast and accurate. However, motion blur is a considerably more ...
    • Interactive Parameter Retrieval for Two-Tone Procedural Textures 

      Gieseke, Lena; Koch, Sebastian; Hahn, Jens Uwe; Fuchs, Martin (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      The choice of parameters for procedural textures to achieve a desired appearance poses a challenging problem even for experienced artists. We propose a method to automatically determine such parameters to reproduce the ...
    • User-Assisted Video Stabilization 

      Bai, Jiamin; Agarwala, Aseem; Agrawala, Maneesh; Ramamoorthi, Ravi (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We present a user-assisted video stabilization algorithm that is able to stabilize challenging videos when stateof- the-art automatic algorithms fail to generate a satisfactory result. Current methods do not give the user ...
    • Semi-Automated Video Morphing 

      Liao, Jing; Lima, Rodolfo S.; Nehab, Diego; Hoppe, Hugues; Sander, Pedro V. (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We explore creating smooth transitions between videos of different scenes. As in traditional image morphing, good spatial correspondence is crucial to prevent ghosting, especially at silhouettes. Video morphing presents ...
    • C-LOD: Context-aware Material Level-of-Detail applied to Mobile Graphics 

      Koulieris, George Alex; Drettakis, George; Cunningham, Douglas; Mania, Katerina (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Attention-based Level-Of-Detail (LOD) managers downgrade the quality of areas that are expected to go unnoticed by an observer to economize on computational resources. The perceptibility of lowered visual fidelity is ...