Now showing items 1-20 of 31

    • 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 ...
    • Illumination-Driven Opacity Modulation for Expressive Volume Rendering 

      Csébfalvi, Balázs; Tóth, Balázs; Bruckner, Stefan; Gröller, Eduard (The Eurographics Association, 2012)
      Using classical volume visualization, typically a couple of isosurface layers are rendered semi-transparently to show the internal structures contained in the data. However, the opacity transfer function is often difficult ...
    • 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, ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Single-Pass Rendering of Day and Night Sky Phenomena 

      Müller, Daniel; Engel, Juri; Döllner, Jürgen (The Eurographics Association, 2012)
      This paper presents astronomical based rendering of skies as seen from low altitudes on earth, in respect to location, date, and time. The technique allows to compose an atmosphere with sun, multiple cloud layers, moon, ...
    • Visualization of Scene Structure Uncertainty in a Multi-View Reconstruction Pipeline 

      Recker, Shawn; Hess-Flores, Mauricio; Duchaineau, Mark A.; Joy, Kenneth I. (The Eurographics Association, 2012)
      This paper presents a novel, interactive visualization tool that allows for the analysis of scene structure uncer- tainty and its sensitivity to parameters in different multi-view scene reconstruction stages. Given a set ...
    • Interactive Geometry-Aware Segmentation for the Decomposition of Kaleidoscopic Images 

      Klehm, Oliver; Reshetouski, Ilya; Eisemann, Elmar; Seidel, Hans-Peter; Ihrke, Ivo (The Eurographics Association, 2012)
      Mirror systems have recently emerged as an alternative low-cost multi-view imaging solution. The use of these systems critically depends on the ability to compute the background of a multiply mirrored object. The images ...
    • 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 ...
    • 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 ...
    • Registration of Temporal Ultrasonic Image Sequences Using Markov Random Fields 

      Schäfer, Sebastian; Toennies, Klaus (The Eurographics Association, 2012)
      Ultrasound perfusion imaging is a rapid and inexpensive technique which enables observation of a dynamic process with high temporal resolution. The image acquisition is disturbed by various motion influences due to 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 ...
    • 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 ...
    • Screen Space Spherical Harmonic Occlusion 

      Herholz, Sebastian; Schairer, Timo; Schilling, Andreas; Straßer, Wolfgang (The Eurographics Association, 2012)
      In this paper we present a new algorithm for real-time directional occlusion sampling. We combine the real-time capabilities of Screen Space Ambient Occlusion (SSAO) with the Spherical Harmonics (SH) representation of local ...
    • 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 ...
    • Visualizing Dynamic Call Graphs 

      Burch, Michael; Müller, Christoph; Reina, Guido; Schmauder, Hansjoerg; Greis, Miriam; Weiskopf, Daniel (The Eurographics Association, 2012)
      Visualizing time-varying call graphs is challenging due to vast amounts of data at many dimensions to be displayed: Hierarchically organized vertices with attributes, directed or undirected edges with weights, and time. ...
    • 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 ...
    • 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 ...
    • 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 ...