Now showing items 418-437 of 762

    • Occlusion Culling for Sub-Surface Models in Geo-Scientific Applications 

      Plate, John; Grundhoefer, Anselm; Schmidt, Benjamin; Froehlich, und Bernd (The Eurographics Association, 2004)
      Modern graphics cards support occlusion culling in hardware. We present a three pass algorithm, which makes efficient use of this feature. Our geo-scientific sub-surface data sets consist typically of a set of high resolution ...
    • Octreemizer: A Hierarchical Approach for Interactive Roaming Through Very Large Volumes 

      Plate, John; Tirtasana, Michael; Carmona, Rhadamés; Fröhlich, Bernd (The Eurographics Association, 2002)
      We have developed a hierarchical paging scheme for handling very large volumetric data sets at interactive frame rates. Our system trades texture resolution for speed and uses effective prediction strategies. We have tested ...
    • On Simulated Annealing and the Construction of Linear Spline Approximations for Scattered Data 

      Kreylos, Oliver; Hamann, Bernd (Springer and The Eurographics Association, 1999)
      We describe a method to create optimal linear spline approximations to arbitrary functions of one or two variables, given as scattered data without known connectivity.We start with an initial approximation consisting of a ...
    • On Visualization and Reconstruction from Non-Uniform Point Sets using B-splines 

      Vuçini, Erald; Möller, Torsten; Gröller, M. Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      In this paper we present a novel framework for the visualization and reconstruction from non-uniform point sets. We adopt a variational method for the reconstruction of 3D non-uniform data to a uniform grid of chosen ...
    • Online Dynamic Graph Drawing 

      Frishman, Yaniv; Tal, Ayellet (The Eurographics Association, 2007)
      This paper presents an algorithm for drawing a sequence of graphs online. The algorithm strives to maintain the global structure of the graph and thus the user's mental map, while allowing arbitrary modifications between ...
    • Opacity Optimization for Surfaces 

      Günther, Tobias; Schulze, Maik; Esturo, Janick Martinez; Rössl, Christian; Theisel, Holger (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      In flow visualization, integral surfaces rapidly tend to expand, fold and produce vast amounts of occlusion. While silhouette enhancements and local transparency mappings proved useful for semi-transparent depictions, they ...
    • An Open Toolkit for Prototyping Reverse Engineering Visualizations 

      Telea, Alexandru; Maccari, Alessandro; Riva, Claudio (The Eurographics Association, 2002)
      Maintenance and evolution of complex software systems (such as mobile telephones) involves activities such as reverse engineering (RE) and software visualization. Although several RE tools exist, we found their architecture ...
    • Out-of-Core Simplification and Crack-Free LOD Volume Rendering for Irregular Grids 

      Du, Zhiyan; Chiang, Yi-Jen (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We propose a novel out-of-core simplification and level-of-detail (LOD) volume rendering algorithm for large irregular grids represented as tetrahedral meshes. One important feature of our algorithm is that it creates a ...
    • PaperVis: Literature Review Made Easy 

      Chou, Jia -Kai; Yang, C. -K. (The Eurographics Association and Blackwell Publishing Ltd., 2011)
      Reviewing literatures for a certain research field is always important for academics. One could use Google-like information seeking tools, but oftentimes he/she would end up obtaining too many possibly related papers, as ...
    • Papilio: Visualizing Android Application Permissions 

      Loorak, Mona Hosseinkhani; Fong, Philip W. L.; Carpendale, Sheelagh (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We introduce Papilio, a new visualization technique for visualizing permissions of real-world Android applications. We explore the development of layouts that exploit the directed acyclic nature of Android application ...
    • Parallel and Out-of-core View-dependent Isocontour Visualization Using Random Data Distribution 

      Zhang, Xiaoyu; Bajaj, Chandrajit; Ramachandran, Vijaya (The Eurographics Association, 2002)
      In this paper we describe a parallel and out-of-core view-dependent isocontour visualization algorithm that efficiently extracts and renders the visible portions of an isosurface from large datasets. The algorithm first ...
    • Parallel Computation of 3D Morse-Smale Complexes 

      Shivashankar, Nithin; Natarajan, Vijay (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      The Morse-Smale complex is a topological structure that captures the behavior of the gradient of a scalar function on a manifold. This paper discusses scalable techniques to compute the Morse-Smale complex of scalar functions ...
    • Parallel Irradiance Caching for Interactive Monte-Carlo Direct Volume Rendering 

      Khlebnikov, Rostislav; Voglreiter, Philip; Steinberger, Markus; Kainz, Bernhard; Schmalstieg, Dieter (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      We propose a technique to build the irradiance cache for isotropic scattering simultaneously with Monte Carlo progressive direct volume rendering on a single GPU, which allows us to achieve up to four times increased ...
    • Parallel Marching Blocks: A Practical Isosurfacing Algorithm for Large Data on Many-Core Architectures 

      Liu, Baoquan; Clapworthy, Gordon J.; Dong, Feng; Wu, Enhua (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Interactive isosurface visualisation has been made possible by mapping algorithms to GPU architectures. However, current state-of-the-art isosurfacing algorithms usually consume large amounts of GPU memory owing to the ...
    • Parallel Multipipe Rendering for Very Large Isosurface Visualization 

      Udeshi, Tushar; Hansen, Charles D. (Springer and The Eurographics Association, 1999)
      In exploratory scientific visualization, isosurfaces are typi- cally created with an explicit polygonal representation for the surface using a technique such as Marching Cubes. For even moderate data sets, Marchching Cubes ...
    • Parallel Ray Casting of Visible Human on Distributed Memory Architectures 

      Bajaj, Chandrajit; Ihm, Insung; Koo, Gee-bum; Park, Sanghun (Springer and The Eurographics Association, 1999)
      This paper proposes a new parallel ray-casting scheme for very large volume data on distributed-memory architectures. Our method, based on data compression, attempts to enhance the speedup of parallel rendering by quickly ...
    • Parametric Visualization of High Resolution Correlated Multi-spectral Features Using PCA 

      Broersen, Alexander; Liere, Robert van; Heeren, Ron M. A. (The Eurographics Association, 2007)
      An imaging mass spectrometer is an analytical instrument that can determine the spatial distribution of chemical compounds on complex surfaces. The output of the device is a multi-spectral datacube; a three-dimensional ...
    • Particle Level Set Advection for the Interactive Visualization of Unsteady 3D Flow 

      Cuntz, Nicolas; Kolb, Andreas; Strzodka, Robert; Weiskopf, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2008)
      Typically, flow volumes are visualized by defining their boundary as iso-surface of a level set function. Grid-based level sets offer a good global representation but suffer from numerical diffusion of surface detail, ...
    • Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decomposition 

      Sadarjoen, Ari; Boer, Alex J. de; Post, Frits H.; Mynett, Arthur E. (The Eurographics Association, 1998)
      Particle tracing in curvilinear grids often employs decomposition of hexahedral cells into 5 tetrahedra. This method has shortcomings when applied to sigma-transformed grids, a grid type having strongly sheared cells, ...
    • Particle Tracing on Sparse Grids 

      Teitzel, Christian; Grosso, Roberto; Ertl, Thomas (The Eurographics Association, 1998)
      These days sparse grids are of increasing interest in numerical simulations. Based upon hierarchical tensor product bases, the sparse grid approach is a very e cient one improving the ratio of invested storage and computing ...