By Topic

IEEE Transactions on Visualization and Computer Graphics

Issue 2 • Date April-June 2003

Filter Results

Displaying Results 1 - 13 of 13
  • Guest editor's introduction: special section on IEEE visualization

    Publication Year: 2003, Page(s):113 - 114
    Request permission for commercial reuse | PDF file iconPDF (183 KB) | HTML iconHTML
    Freely Available from IEEE
  • Illustrative interactive stipple rendering

    Publication Year: 2003, Page(s):127 - 138
    Cited by:  Papers (19)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3890 KB) | HTML iconHTML

    Simulating hand-drawn illustration can succinctly express information in a manner that is communicative and informative. We present a framework for an interactive direct stipple rendering of volume and surface-based objects. By combining the principles of artistic and scientific illustration, we explore several feature enhancement techniques to create effective, interactive visualizations of scien... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Shadows and soft shadows with participating media using splatting

    Publication Year: 2003, Page(s):139 - 149
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1074 KB) | HTML iconHTML

    This paper describes an efficient algorithm to model the light attenuation due to a participating media with low albedo. Here, we consider the light attenuation along a ray, as well as the light attenuation emanating from a surface. The light attenuation is modeled using a splatting volume renderer for both the viewer and the light source. During the rendering, a 2D shadow buffer accumulates the l... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Distributed Virtual Reality environments based on rewriting systems

    Publication Year: 2003, Page(s):213 - 225
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1474 KB) | HTML iconHTML

    Ideally, virtual worlds should be dynamic, mutable, and complex in order to be attractive for immersed users. As such worlds can be designed easily by rewriting techniques, we propose a distributed Virtual Reality (VR) system that is based on an interactive animation system using a rewriting technique for geometric and behavioral modeling. The emphasis is on concepts and extensions for the integra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Communicating centrality in policy network drawings

    Publication Year: 2003, Page(s):241 - 253
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB) | HTML iconHTML

    We introduce a network visualization technique that supports an analytical method applied in the social sciences. Policy network analysis is an approach to study policy making structures, processes, and outcomes, thereby concentrating on relations between policy actors. An important operational concept for the analysis of policy networks is the notion of centrality, i.e., the distinction of actors... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiscale visualization using data cubes

    Publication Year: 2003, Page(s):176 - 187
    Cited by:  Papers (11)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2940 KB) | HTML iconHTML

    Most analysts start with an overview of the data before gradually refining their view to be more focused and detailed. Multiscale pan-and-zoom systems are effective because they directly support this approach. However, generating abstract overviews of large data sets is difficult and most systems take advantage of only one type of abstraction: visual abstraction. Furthermore, these existing system... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model for volume lighting and modeling

    Publication Year: 2003, Page(s):150 - 162
    Cited by:  Papers (51)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2375 KB) | HTML iconHTML

    Direct volume rendering is a commonly used technique in visualization applications. Many of these applications require sophisticated shading models to capture subtle lighting effects and characteristics of volumetric data and materials. For many volumes, homogeneous regions pose problems for typical gradient-based surface shading. Many common objects and natural phenomena exhibit visual quality th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparing simplification and image-based techniques for 3D client-server rendering systems

    Publication Year: 2003, Page(s):226 - 240
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1290 KB) | HTML iconHTML

    A mathematical model is presented for comparing geometric and image-based simplification methods. Geometric simplification reduces the number of polygons in the virtual object and image-based simplification replaces the object with an image. Our model integrates and extrapolates existing accuracy estimates, enabling the comparison of different simplification methods in order to choose the most eff... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • GraphSplatting: visualizing graphs as continuous fields

    Publication Year: 2003, Page(s):206 - 212
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (726 KB) | HTML iconHTML

    This paper introduces GraphSplatting, a technique which transforms a graph into a two-dimensional scalar field. The scalar field can be rendered as a color coded map, a height field, or a set of contours. Splat fields allow for the visualization of arbitrarily large graphs without cluttering. They provide density information which can be used to determine the structure of the graph. The constructi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hardware-based view-independent cell projection

    Publication Year: 2003, Page(s):163 - 175
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1049 KB) | HTML iconHTML

    We present two implementations of a view-independent cell projection algorithm for off-the-shelf programmable graphics hardware. Both implementations perform all computations for the projection and scan conversion of a set of tetrahedra on the graphics hardware and are therefore compatible with many of the hardware-accelerated optimizations for polygonal graphics, e.g., OpenGL vertex arrays and di... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using motion to illustrate static 3D shape-kinetic visualization

    Publication Year: 2003, Page(s):115 - 126
    Cited by:  Papers (11)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1344 KB) | HTML iconHTML

    In this paper, we present a novel visualization technique-kinetic visualization-that uses motion along a surface to aid in the perception of 3D shape and structure of static objects. The method uses particle systems, with rules such that particles flow over the surface of an object to not only bring out, but also attract attention to information on a shape that might not be readily visible with a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simplification and repair of polygonal models using volumetric techniques

    Publication Year: 2003, Page(s):191 - 205
    Cited by:  Papers (95)  |  Patents (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1439 KB) | HTML iconHTML

    Two important tools for manipulating polygonal models are simplification and repair and we present voxel-based methods for performing both of these tasks. We describe a method for converting polygonal models to a volumetric representation in a way that handles models with holes, double walls, and intersecting parts. This allows us to perform polygon model repair simply by converting a model to and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image-based techniques in a hybrid collision detector

    Publication Year: 2003, Page(s):254 - 271
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1674 KB) | HTML iconHTML

    Most collision detection methods developed so far are based on geometrical object-space interference tests. While this remains the basic mode of investigation for geometric algorithms, the requirements for interactive rates and complex geometry predominate in commercial applications. In this article, we propose a new mode of collision detection based on an image-space approach. This approach break... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

Visualization techniques and methodologies; visualization systems and software; volume visualization; flow visualization; multivariate visualization; modeling and surfaces; rendering; animation; user interfaces; visual progranuning; applications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Leila De Floriani
Department of Computer Science, Bioengineering, Robotics and Systems Engineering
University of Genova
16146 Genova (Italy)
ldf4tvcg@umiacs.umd.edu