Now showing items 1-20 of 31

    • Cyclic Numerical Time Integration in Variational Non-Rigid Image Registration based on Quadratic Regularisation 

      Mang, Andreas; Schuetz, Tina Anne; Becker, Stefan; Toma, Alina; Buzug, Thorsten M. (The Eurographics Association, 2012)
      In the present work, a novel computational framework for variational non-rigid image registration is discussed. The fundamental aim is to provide an alternative to approximate approaches based on successive convolution, ...
    • Fast Accurate Soft Shadows with Adaptive Light Source Sampling 

      Schwärzler, Michael; Mattausch, Oliver; Scherzer, Daniel; Wimmer, Michael (The Eurographics Association, 2012)
      Physically accurate soft shadows in 3D applications can be simulated by taking multiple samples from all over the area light source and accumulating them. Due to the unpredictability of the size of the penumbra regions, ...
    • Hybrid Sample-based Surface Rendering 

      Reichl, Florian; Chajdas, Matthäus G.; Bürger, Kai; Westermann, Rüdiger (The Eurographics Association, 2012)
      The performance of rasterization-based rendering on current GPUs strongly depends on the abilities to avoid overdraw and to prevent rendering triangles smaller than the pixel size. Otherwise, the rates at which highresolution ...
    • 3D Shape Matching based on Geodesic Distance Distributions 

      Martinek, Michael; Ferstl, Matthias; Grosso, Roberto (The Eurographics Association, 2012)
      In this work, we present a signature for 3D shapes which is based on the distribution of geodesic distances. Our shape descriptor is invariant with respect to rotation and scaling as well as articulations of the object. ...
    • Spectral Analysis of Higher-Order and BFECC Texture Advection 

      Netzel, Rudolf; Ament, Marco; Burch, Michael; Weiskopf, Daniel (The Eurographics Association, 2012)
      We present a spectral analysis of higher-order texture advection in combination with Back and Forth Error Compensation and Correction (BFECC). Semi-Lagrangian texture advection techniques exhibit high numerical diffusion, ...
    • Markov Chain Driven Multi-Dimensional Visual Pattern Analysis with Parallel Coordinates 

      Geng, Zhao; Walker, James; Laramee, Robert S. (The Eurographics Association, 2012)
      Parallel coordinates is a widely used visualization technique for presenting, analyzing and exploring multidimensional data. However, like many other visualizations, it can suffer from an overplotting problem when rendering ...
    • Visualization and Exploration of Shape Variance for the Analysis of Cohort Study Data 

      Klemm, Paul; Oeltze, Steffen; Hegenscheid, Katrin; Völzke, Henry; Toennies, Klaus; Preim, Bernhard (The Eurographics Association, 2012)
      In epidemiological studies, a group of people with common characteristics or experiences (a cohort) is studied including an analysis of socio-demographic as well as biological factors and correlations indicating per subject ...
    • Kinematic ICP for Articulated Template Fitting 

      Fechteler, Philipp; Hilsmann, Anna; Eisert, Peter (The Eurographics Association, 2012)
      In this paper, we present an efficient optimization method to adapt an articulated 3D template model to a full or partial 3D mesh. The well-known ICP algorithm is enhanced to fit a generic template to a target mesh. Each ...
    • Implicit Integral Surfaces 

      Stöter, Torsten; Weinkauf, Tino; Seidel, Hans-Peter; Theisel, Holger (The Eurographics Association, 2012)
      We present an implicit method for globally computing all four classic types of integral surfaces - stream, path, streak, and time surfaces - in 3D time-dependent vector fields. Our novel formulation is based on the ...
    • Optimized Canonical Coordinate Frames for 3D Object Normalization 

      Martinek, Michael; Grosso, Roberto; Greiner, Günther (The Eurographics Association, 2012)
      In this paper, we describe a method to optimize an orthogonal system of axes for 3D objects in order to perform normalization with respect to orientation and scale. An energy function evaluates the quality of a system by ...
    • GPU-accelerated Interactive Material Aging 

      Günther, Tobias; Rohmer, Kai; Grosch, Thorsten (The Eurographics Association, 2012)
      A photorealistic appearance of a 3D scene is required in many applications today. Thereby, one vital aspect is the usage of realistic materials, for which a broad variety of reflectance models is available. When directly ...
    • Fast and Robust Landmark Tracking in X-ray Locomotion Sequences Containing Severe Occlusions 

      Amthor, Manuel; Haase, Daniel; Denzler, Joachim (The Eurographics Association, 2012)
      Recent advances in the understanding of animal locomotion have proven it to be a key element of many fields in biology, motion science, and robotics. For the analysis of walking animals, high-speed x-ray videography is ...
    • Juggling Increases Interhemispheric Brain Connectivity: A Visual and Quantitative dMRI Study 

      Schultz, Thomas; Gerber, Peter; Schmidt-Wilcke, Tobias (The Eurographics Association, 2012)
      We use visualization to help analyze a diffusion magnetic resonance imaging study that has investigated the effects of learning how to juggle on nerve fiber microstructure in the human brain. Building on a standard voxel-wise ...
    • An Efficient Trim Structure for Rendering Large B-Rep Models 

      Claux, Frédéric; Vanderhaeghe, David; Barthe, Loïc; Paulin, Mathias; Jessel, Jean-Pierre; Croenne, David (The Eurographics Association, 2012)
      We present a multiresolution trim structure for fast and accurate B-Rep model visualization. To get a good tradeoff between performance and visual accuracy, we propose to use a vectorial but approximated representation of ...
    • Automatic Detection and Recognition of Engineered Nanoparticles in SEM Images 

      Kockentiedt, Stephen; Toennies, Klaus; Gierke, Erhardt; Dziurowitz, Nico; Thim, Carmen; Plitzko, Sabine (The Eurographics Association, 2012)
      Engineered nanoparticles have gained importance in recent years and will do so in the future, but their potential toxicity remains an open question. To better understand their effects on the human body, it is necessary to ...
    • Segmentation of Vertebral Bodies in MR Images 

      Zukic, Dzenan; Vlasák, Ales; Dukatz, Thomas; Egger, Jan; Horínek, Daniel; Nimsky, Christopher; Kolb, Andreas (The Eurographics Association, 2012)
      Segmentation of vertebral bodies is useful for diagnosis of certain spine pathologies, such as scoliosis, spondylolisthesis and vertebral fractures. In this paper, we present a fast and semi-automatic approach for spine ...
    • The Great Wall of Space-Time 

      Tominski, Christian; Schulz, Hans-Joerg (The Eurographics Association, 2012)
      Understanding how data evolves in space and time is an essential task in many application domains. Despite the numerous visual methods that have been proposed to facilitate this task (e.g., showing the data on a map or ...
    • Resolving Twisted Surfaces within an Iterative Refinement Surface Reconstruction Approach 

      Annuth, Hendrik; Bohn, Christian-A. (The Eurographics Association, 2012)
      We present a method which resolves twisted surface regions within a surface reconstruction approach that uses local refinement operations to iteratively fit a surface into an unorganized point cloud. We show that this local ...
    • Analysis of Vortex Merge Graphs 

      Kasten, Jens; Zoufahl, Andre; Hege, Hans-Christian; Hotz, Ingrid (The Eurographics Association, 2012)
      We propose an analysis framework to investigate different flow quantities such as vorticity, &#955<sub>2</sub> or the acceleration magnitude along vortex merge graphs and within their regions of influence. The ...
    • Generating Smooth High-Quality Isosurfaces for Interactive Modeling and Visualization of Complex Terrains 

      Löffler, Falko; Schumann, Heidrun (The Eurographics Association, 2012)
      In modeling and rendering of complex procedural terrains the extraction of isosurfaces is an important part. In this paper we introduce an approach to generate high-quality isosurfaces from regular grids at interactive ...