Proceedings Visualization '92

19-23 Oct. 1992

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Displaying Results 1 - 25 of 60
  • Visualizing a three dimensional hydrodynamic model

    Publication Year: 1992, Page(s):441 - 445
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    A three-dimensional finite-element hydrodynamic model was constructed to simulate tidal cycles in Galveston Bay over a one-year period in order to view changes in water velocities and salinity. A project undertaken to visualize the simulation results is reported. The project comprised analyzing model requirements and determining suitable visualization techniques, visualizing a preliminary, smaller... View full abstract»

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  • Case study: visualizing classical problems in CFD

    Publication Year: 1992, Page(s):436 - 440
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    A brief example of the visualization and quantification of a complex fluid interaction is presented in order to give one a feeling for the difficulty of dealing with geometrical and topological questions in three dimensions and time. To obtain a quantitative understanding, visiometric techniques, including thresholding, object isolation, ellipsoid fitting, abstraction, vector field line generation... View full abstract»

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  • Visualization requirements in the atmospheric and environmental sciences (five case study reports)

    Publication Year: 1992, Page(s):428 - 435
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (674 KB)

    Reports from five research centers involved with atmospheric and environmental visualization issues are presented in this case study. Visualization with heterogeneous computer architectures is highlighted in the US EPA Scientific Visualization Center discussion. The NASA Marshall Space Flight Center effort to develop the multidimensional analysis of sensor systems (MASS) environment is presented. ... View full abstract»

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  • Visualizing seafloor structures with satellite gravity measurements

    Publication Year: 1992, Page(s):424 - 427
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (297 KB)

    The relationship between gravity and topography to study subseafloor structures is discussed. Specifically, analysis of the dynamics of seafloor spreading using satellite altimetry is described. The visualization of satellite altimetry data and the limitations of such applications are presented.<<ETX>> View full abstract»

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  • The microscopist's workstation

    Publication Year: 1992, Page(s):419 - 423
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Issues involved in operating a sophisticated scientific instrument as a computer peripheral accessible over a high-speed network are studied. A custom interactive visualization application was constructed to support investigation using a unique computer-controlled high-voltage electron microscope. The researcher's workstation forms the visible third of a triumvirate, along with the instrument and ... View full abstract»

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  • Visualization of cardiac bioelectricity-a case study

    Publication Year: 1992, Page(s):411 - 418
    Cited by:  Papers (9)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (801 KB)

    A project in the field of computational electrocardiography which requires visualization of complex, three-dimensional geometry and electric potential and current fields is described. Starting from magnetic resonance images (MRIs) from a healthy subject, a multisurfaced model of the human thorax was constructed and used as the basis for computational studies relating potential distributions measur... View full abstract»

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  • Visualization in anthropology: reconstruction of human fossils from multiple pieces

    Publication Year: 1992, Page(s):404 - 410
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (506 KB)

    A new way of reconstructing human fossils from fragmentary fossil material is described. Unlike the traditional method of making physical models using clay, this new approach is based on geometrical modeling and visualization of digitized fossil data. It can provide anthropologists with both quantifiable, computer-based geometric models and physical plastic reconstructions of fossils.<<ETX&g... View full abstract»

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  • Visualization of neutron scattering data using AVS

    Publication Year: 1992, Page(s):398 - 403
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (525 KB)

    This case study is a result of a six-week feasibility exercise, the aim of which was to explore the extend to which existing visualization software can be used for visualizing ISIS neutron scattering data. ISIS is an experimental facility devoted to the use of pulsed neutrons and muons to investigate the microscopic structure and dynamics of all classes of condensed matter. The feasibility study d... View full abstract»

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  • Visualizing the Universe

    Publication Year: 1992, Page(s):390 - 397
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (595 KB)

    A Universe mapping project at the Harvard-Smithsonian Center for Astrophysics (CfA), called the CfA Redshift Survey, is described. The line-of-sight recession velocities of galaxies are measured by identifying absorption and emission lines in their spectra. With the two angular positions of a galaxy on the sky and a measurement of its red-shift, each galaxy can be placed in a three-dimensional (3-... View full abstract»

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  • Object-oriented, dataflow visualization system-a paradigm shift?

    Publication Year: 1992, Page(s):384 - 388
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (430 KB)

    Discusses the breadth and the effectiveness of application visualization systems (AVSs). The current and future research areas involving AVSs, drawbacks and limitations of certain application areas, possible improvements to AVSs, and alternative analysis and visualization approaches are discussed.<<ETX>> View full abstract»

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  • Visualization in the neurosciences: utility in research, teaching, and clinical practice

    Publication Year: 1992, Page(s):380 - 383
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (287 KB)

    Discusses the uses of visualization in the field of neuroscience is reported. The applications discussed are image analysis for basic neurobiological problems, image analysis from basic to applied neurobiological problems, management of images and graphics from anatomical experiments, and visualization and analysis of multivariate electrophysiological data sets.<<ETX>> View full abstract»

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  • Real virtual environment applications-now

    Publication Year: 1992, Page(s):375 - 379
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Discusses efforts to develop virtual environment (VE) systems. The applications discussed are medical telesurgery, maintenance access, presence simulators, accounting visualizations, topographic visualizations and tools to assist developers in determining the value added of potential VE-based solutions.<<ETX>> View full abstract»

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  • Improving visualization: theoretical and empirical foundations

    Publication Year: 1992, Page(s):372 - 374
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (209 KB)

    Discusses the ways in which the understanding of visual perception could help improve the scientific visualization process. It is argued that as long as there is a human interface link to computer visualization systems, understanding how humans perceive information visually could help improve the quality and the effectiveness of the visualization process. The fields of visual physiology, psychophy... View full abstract»

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  • Grand challenge problems in visualization software

    Publication Year: 1992, Page(s):366 - 371
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    Discusses issues relating to the complexity of scientific visualization software system implementation. It is argued that the complexity of current implementations of such systems may limit the utility for users because the interfaces typically require significant knowledge of the data being studied and the applicable visualization algorithms, as well as its infrastructure of graphics, imaging and... View full abstract»

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  • Techniques for managing very large scientific databases

    Publication Year: 1992, Page(s):362 - 365
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (275 KB)

    Discusses issues relating to the state of the art in scientific data management. Management of scientific data sets or databases is reviewed. The generic science requirements, as well as a case example that drives the underlying data management system architecture are explored, showing current technology limitations. A concept of intelligent information fusion with sufficient detail on how to inte... View full abstract»

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  • Visualizing n-dimensional implications of two-dimensional design decisions

    Publication Year: 1992, Page(s):356 - 360
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (414 KB)

    Experiments in visualizing implications of landscape planning and design decisions using a combination of GIS, CAD, and video animation technology are described. Simple grid-cell GIS databases and site-scale polygonal models are used to provide visualizations of site planning design proposals and environmental impact, with both static and animated images. Rather than pursuing photo-realistic simul... View full abstract»

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  • Interactive terrain rendering and volume visualization on the Princeton Engine

    Publication Year: 1992, Page(s):349 - 355
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (682 KB)

    The implementation of truly interactive volume visualization and terrain rendering algorithms on the Princeton Engine (PE) video supercomputer is described. The PE is a single-instruction multiple-data (SIMD) computer. Since it was originally developed as a real-time digital television system simulator, it possesses many of the attributes necessary for interactive visualization: high-resolution di... View full abstract»

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  • A voxel-based, forward projection algorithm for rendering surface and volumetric data

    Publication Year: 1992, Page(s):340 - 348
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A voxel-based, forward projection algorithm with a pipeline architecture for real-time applications is presented. The multisensor capabilities (electrooptical, or visual, and infrared) currently implemented in software have also been applied to non-real-time imaging applications on workstations and minicomputers. Most suited for terrain-based applications, the system features haze, imbedded target... View full abstract»

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  • Optimizing triangulations by curvature equalization

    Publication Year: 1992, Page(s):333 - 339
    Cited by:  Papers (7)  |  Patents (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (607 KB)

    An algorithm that attempts to improve a triangulation by shifting the vertices so that curvature within the triangles is nearly equal is presented. Unnecessary triangles are removed. The method is an effective way of guaranteeing that the triangle vertices are points of higher curvature, and that the triangle edges correspond to distinctive edges on the surfaces. Triangulations of surfaces with co... View full abstract»

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  • Visualization of high resolution, three-dimensional, nonlinear finite element analyses

    Publication Year: 1992, Page(s):324 - 331
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (563 KB)

    A two-pass surface extraction algorithm for adaptive finite-element meshes is presented in the context of a visualization study for a particle impact and a turbine-blade containment problem. The direct use of finite-element data structures for the computation of external surfaces, surface normals, and derived physical qualities is discussed. An overview of the in-betweening which accounts for rigi... View full abstract»

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  • Visualization of second order tensor fields and matrix data

    Publication Year: 1992, Page(s):316 - 323
    Cited by:  Papers (30)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (686 KB)

    The visualization of 3-D second-order tensor fields and matrix data is studied. The general problem of visualizing unsymmetric real or complex Hermitian second-order tensor fields can be reduced to the simultaneous visualization of a real and symmetric second-order tensor field and a real vector field. The emphasis is on exploiting the mathematical properties of tensor fields in order to facilitat... View full abstract»

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  • Volume warping

    Publication Year: 1992, Page(s):308 - 315
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (559 KB)

    Volume warping, a technique for deforming sampled volumetric data using B-splines that is related to image warping and to the free-form deformations of T.W. Sederberg and S.R. Parry (1986) and S. Coquillart (1990), is presented. The process is accelerated to near-real-time speed, and the compromises that are made to effect such speeds are explained. This technique expands the repertoire of volumet... View full abstract»

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  • Network video device control

    Publication Year: 1992, Page(s):299 - 306
    Cited by:  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (629 KB)

    Work in progress at the San Diego Supercomputer Center (SDSC) involving the implementation of network clients and servers to provide networkwide access to video devices is described. Applications anywhere on the net can manage record and playback operations, change video signal routing, or adjust scan converter parameters. Details of network communications, protocols, and device-specific control q... View full abstract»

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  • Virtual spacetime: an environment for the visualization of curved spacetimes via geodesic flows

    Publication Year: 1992, Page(s):291 - 298
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (605 KB)

    An implementation of a virtual environment for visualizing the geometry of curved spacetime by the display of interactive geodesics is described. This technique displays the paths of particles under the influence of gravity as described by the general theory of relativity and is useful in the investigation of solutions to the field equations of that theory. A boom-mounted six-degree-of-freedom hea... View full abstract»

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  • Automated design of virtual worlds for visualizing multivariate relations

    Publication Year: 1992, Page(s):283 - 290
    Cited by:  Papers (9)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (678 KB)

    Interactive visualization systems provide a powerful means to explore complex data, especially when coupled with 3-D interaction and display devices to produce virtual worlds. While designing a quality static 2-D visualization is already a difficult task for most users, designing an interactive 3-D one is even more challenging. To address this problem, AutoVisual, a research system that designs in... View full abstract»

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