Visualization, 1994., Visualization '94, Proceedings., IEEE Conference on

21-21 Oct. 1994

Filter Results

Displaying Results 1 - 25 of 60
  • Proceedings Visualization '94

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (20 KB)
    Freely Available from IEEE
  • Discretized Marching Cubes

    Publication Year: 1994, Page(s):281 - 287, CP32
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    Since the introduction of standard techniques for isosurface extraction from volumetric datasets, one of the hardest problems has been to reduce the number of triangles (or polygons) generated. The paper presents an algorithm that considerably reduces the number of polygons generated by a Marching Cubes-like scheme (W. Lorensen and H. Cline, 1987) without excessively increasing the overall computa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A library for visualizing combinatorial structures

    Publication Year: 1994, Page(s):164 - 171, CP18
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    Describes ANIM3D, a 3D animation library targeted at visualizing combinatorial structures. In particular, we are interested in algorithm animation. Constructing a new view for an algorithm typically takes dozens of design iterations, and can be very time-consuming. Our library eases the programmer's burden by providing high-level constructs for performing animations, and by offering an interpretiv... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualization and data analysis in space and atmospheric science

    Publication Year: 1994, Page(s):341 - 344, CP37
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    In this paper we show how SAVS, a tool for visualization and data analysis in space and atmospheric science, can be used to quickly and easily address problems that would previously have been far more laborious to solve. Based on the popular AVS package, SAVS presents the user with an environment tailored specifically for the physical scientist. Thus there is minimal “startup” time, an... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Approximation of isosurface in the Marching Cube: ambiguity problem

    Publication Year: 1994, Page(s):288 - 292
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The purpose of the article is the consideration of the problem of ambiguity over the faces arising in the Marching Cube algorithm. The article shows that for unambiguous choice of the sequence of the points of intersection of the isosurface with edges confining the face it is sufficient to sort them along one of the coordinates. It also presents the solution of this problem inside the cube. Graph ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Strata-various: multi-layer visualization of dynamics in software system behavior

    Publication Year: 1994, Page(s):172 - 178, CP19
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    Current software visualization tools are inadequate for understanding, debugging, and tuning realistically complex applications. These tools often present only static structure, or they present dynamics from only a few of the many layers of a program and its underlying system. This paper introduces “PV”, a prototype program visualization system which provides concurrent visual presenta... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Triangulation and display of rational parametric surfaces

    Publication Year: 1994, Page(s):69 - 76, CP6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    We present a comprehensive algorithm to construct a topologically correct triangulation of the real affine part of a rational parametric surface with few restrictions on the defining rational functions. The rational functions are allowed to be undefined on domain curves (pole curves) and at certain special points (base points), and the surface is allowed to have nodal or cuspidal self-intersection... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The topology of symmetric, second-order tensor fields

    Publication Year: 1994, Page(s):140 - 147, CP15
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    We study the topology of symmetric, second-order tensor fields. The goal is to represent their complex structure by a simple set of carefully chosen points and lines analogous to vector field topology. We extract topological skeletons of the eigenvector fields, and we track their evolution over time. We study tensor topological transitions and correlate tensor and vector data. The basic constituen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • VolVis: a diversified volume visualization system

    Publication Year: 1994, Page(s):31 - 38, CP3
    Cited by:  Papers (29)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    VolVis is a diversified, easy to use, extensible, high performance, and portable volume visualization system for scientists and engineers as well as for visualization developers and researchers. VolVis accepts as input 3D scalar volumetric data as well as 3D volume-sampled and classical geometric models. Interaction with the data is controlled by a variety of 3D input devices in an input device-in... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A case study on visualization for boundary value problems

    Publication Year: 1994, Page(s):345 - 348
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    In this paper we present a method, and a software based on this method, making highly inter-active visualization possible for computational results on nonlinear BVPs associated with ODEs. The program PCR relies partly on computer graphics tools and partly on real-time computations, the combination of which not only helps the understanding of complex problems, it also permits the reduction of store... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonpolygonal isosurface rendering for large volume datasets

    Publication Year: 1994, Page(s):293 - 300, CP33
    Cited by:  Papers (2)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Surface-based rendering techniques, particularly those that extract a polygonal approximation of an isosurface, are widely used in volume visualization. As dataset size increases though, the computational demands of these methods can overwhelm typically available computing resources. Recent work on accelerating such techniques has focused on preprocessing the volume data or postprocessing the extr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Differential volume rendering: a fast volume visualization technique for flow animation

    Publication Year: 1994, Page(s):180 - 187, CP20
    Cited by:  Papers (28)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    We present a direct volume rendering algorithm to speed up volume animation for flow visualizations. Data coherency between consecutive simulation time steps is used to avoid casting rays from those pixels retaining color values assigned to the previous image. The algorithm calculates the differential information among a sequence of 3D volumetric simulation data. At each time step the differential... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualization and geographic information system integration: what are the needs and the requirements, if any?

    Publication Year: 1994, Page(s):400 - 403
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Addresses the needs and requirements of integrating visualization and geographic information system technologies. There are three levels of integration methods: rudimentary, operational and functional. The rudimentary approach uses the minimum amount of data sharing and exchange between these two technologies. The operational level attempts to provide consistency of the data while removing redunda... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Isosurface generation by using extrema graphs

    Publication Year: 1994, Page(s):77 - 83, CP7
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A high-performance algorithm for generating isosurfaces is presented. In this algorithm, extrema points in a scalar field are first extracted. A graph is then generated in which the extrema points are taken as nodes. Each arc of the graph has a list of IDs of the cells that are intersected by the arc. A boundary cell list ordered according to cells' values is also generated. The graph and the list... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The design and implementation of the Cortex visualization system

    Publication Year: 1994, Page(s):265 - 272, CP30
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Cortex has been designed for interactive analysis and display of simulation data generated by CFD applications based on unstructured-grid solvers. Unlike post-processing visualization environments, Cortex is designed to work in co-processing mode with the CFD application. This significantly reduces data storage and data movement requirements for visualization and also allows users to interactively... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • GASP-a system for visualizing geometric algorithms

    Publication Year: 1994, Page(s):149 - 155, CP16
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    This paper describes a system, GASP, that facilitates the visualization of geometric algorithms. The user need not have any knowledge of computer graphics in order to quickly generate a visualization. The system is also intended to facilitate the task of implementing and debugging geometric algorithms. The viewer is provided with a comfortable user interface enhancing the exploration of an algorit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Introducing alpha shapes for the analysis of path integral Monte Carlo results

    Publication Year: 1994, Page(s):52 - 59
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    We present a new technique for the visualization and analysis of the results from Monte Carlo simulations based on α-complexes and α-shapes. The specific application presented is the analysis of the quantum-mechanical behavior of hydrogen molecules and helium atoms on a surface at very low temperatures. The technique is an improvement over existing techniques in two respects. First, th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 3D visualization of unsteady 2D airplane wake vortices

    Publication Year: 1994, Page(s):124 - 131, CP13
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    Air flowing around the wing tips of an airplane forms horizontal tornado-like vortices that can be dangerous to following aircraft. The dynamics of such vortices, including ground and atmospheric effects, can be predicted by numerical simulation, allowing the safety and capacity of airports to be improved. We introduce three-dimensional techniques for visualizing time-dependent, two-dimensional wa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated control of distributed volume visualization through the World-Wide-Web

    Publication Year: 1994, Page(s):13 - 20
    Cited by:  Papers (7)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    The World-Wide-Web (WWW) has created a new paradigm for online information retrieval by providing immediate and ubiquitous access to digital information of any type from data repositories located throughout the world. The web's development enables not only effective access for the generic user but also more efficient and timely information exchange among scientists and researchers. We have extende... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualizing data: is virtual reality the key?

    Publication Year: 1994, Page(s):410 - 413
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    A visualization goal is to simplify the analysis of large-quantity, numerical data by rendering the data as an image that can be intuitively manipulated. The question the article addresses is whether or not virtual reality techniques are the cure-all to the dilemma of visualizing increasing amounts of data. It determines the usefulness of techniques available today and in the near future that will... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualizing 3D velocity fields near contour surfaces

    Publication Year: 1994, Page(s):248 - 255, CP28
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    Vector field rendering is difficult in 3D because the vector icons overlap and hide each other. We propose four different techniques for visualizing vector fields only near surfaces. The first uses motion blurred particles in a thickened region around the surface. The second uses a voxel grid to contain integral curves of the vector field. The third uses many antialiased lines through the surface,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Implicit modeling of swept surfaces and volumes

    Publication Year: 1994, Page(s):40 - 45, CP4
    Cited by:  Papers (21)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Swept surfaces and volumes are generated by moving a geometric model through space. Swept surfaces and volumes are important in many computer-aided design applications including geometric modeling, numerical cutter path generation, and spatial path planning. In this paper we describe a numerical algorithm to generate swept surfaces and volumes using implicit modeling techniques. The algorithm is a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualization in medicine: VIRTUAL reality or ACTUAL reality ?

    Publication Year: 1994, Page(s):396 - 399
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Discusses and debates the role played by 3D visualization in medicine as a set of methods and techniques for displaying 3D spatial information related to the anatomy and the physiology of the human body View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualization of volcanic ash clouds

    Publication Year: 1994, Page(s):386 - 390, CP46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Ash clouds resulting from volcanic eruptions are a serious hazard to aviation safety. In Alaska alone, there are over 40 active volcanoes whose eruptions may affect more than 40,000 flights using the great circle polar routes each year. The clouds are especially problematic because they are invisible to radar and nearly impossible to distinguish from weather clouds. The Arctic Region Supercomputin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Severe rainfall events in Northwestern Peru (visualization of scattered meteorological data)

    Publication Year: 1994, Page(s):350 - 354, CP38
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The ordinarily arid climate of coastal Peru is disturbed every few years by a phenomenon called El Nino, characterized by a warming in the Pacific Ocean. Severe rainstorms are one of the consequences of El Nino, which cause great damage. An examination of daily data from 66 rainfall stations in the Chiura-Piura region of northwestern Peru from late 1982 through mid-1983 (associated with an El Nino... View full abstract»

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