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IBM Journal of Research and Development

Issue 1.2 • Date Jan. 1991

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Displaying Results 1 - 25 of 26
  • Preface

    Publication Year: 1991, Page(s): 3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (131 KB)

    Presenting information in image form allows viewers to perceive patterns and relationships which may be missed in a table of numbers; graphics and images have been essential in the development of science and engineering. Medical research and clinical practice leadi n the display and interpretation of two- and three-dimensional data. At first many 3D techniques were based on extracting and displayi... View full abstract»

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  • FEMvis: An interactive visualization tool for mechanical analysis

    Publication Year: 1991, Page(s):4 - 11
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (766 KB)

    Increasing competitiveness in the development and manufacturing of mechanically based products requires ever-increasing design and development cycles, and has stimulated the introduction of many computer-based tools to assist with mechanical design and analysis. Currently, strong emphasis is placed upon the effectiveness of such tools, and on their enhancement through improved usability. A major c... View full abstract»

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  • Volume visualization of 3D finite element method results

    Publication Year: 1991, Page(s):12 - 25
    Cited by:  Papers (1)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1109 KB)

    This paper describes a method for visualizing the output data set of a 3D finite element method result. A linear tetrahedral element is used as a primitive for the visualization processing, and a 3D finite element model is subdivided into a set of these primitives, which are generated at every solid element. With these primitives, isosurfaces are visualized semitransparently from scalar data at ea... View full abstract»

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  • Visual interpretation of multidimensional computations and transistor design

    Publication Year: 1991, Page(s):26 - 44
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1590 KB)

    As digital simulations and computations become more complex, larger volumes of output are generated; the engineer must select a concise method of displaying the output and extracting relevant information. In this paper we describe an experimental system called the Visual Interpretation System (VIS), which provides a wide range of tools for managing the visualization of simulation data. The effecti... View full abstract»

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  • Data visualization using a general-purpose renderer

    Publication Year: 1991, Page(s):45 - 58
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1085 KB)

    This paper describes a general approach to data visualization, based on the Rendering Subroutine Package (RSP). (RSP) is a general-purpose polygon-based renderer, and is IBM's first rendering application programming interface (API) for users who wish to develop their own applications. We present an overview of the system, details of the image synthesis tools, and several examples of the applicatio... View full abstract»

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  • Interactive analysis of the topology of 4D vector fields

    Publication Year: 1991, Page(s):59 - 66
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (682 KB)

    Interactive visualization methods are now evolving in response to a need to provide more immediate access to particular features of interest to analysts at particular points in the space and time of their data. This paper focuses on feature extraction methods relevant to the analysis of vector fields. In vector fields, “critical points” are those points at which the vector magnitude ... View full abstract»

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  • Picture processing and three-dimensional visualization of data from scanning tunneling and atomic force microscopy

    Publication Year: 1991, Page(s):67 - 77
    Cited by:  Papers (2)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (993 KB)

    We present an overview of the current status of picture processing and three-dimensional visualization of data from scanning tunneling microscopy and related techniques. The topics we cover include the physical basis of the resolution limit and noise sources in scanning microscopes, the design and restoration filters, and methods of visualizing surface contours and other surface properties by use ... View full abstract»

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  • Displaying morphological and lithological maps: A numerically intensive computing and visualization application

    Publication Year: 1991, Page(s):78 - 87
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1054 KB)

    Algorithms for evaluating digital terrain models (DEMs) and elevation moments such as slope, aspect, relief, and curvature are discussed. Significant new applications based on the elaboration and display of such data are presented. The results show that the processed data can be used for environmental protection and to identify topography-dependent natural-disaster hazards. View full abstract»

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  • IDB: An image database system

    Publication Year: 1991, Page(s):88 - 96
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (743 KB)

    Specialized software and hardware tools are needed to work on digital color images; the usability of an image system implies the availability of such resources inside a coherent environment and a friendly user interface. Furthermore, a large volume of data must be efficiently stored and retrieved. To cope with these problems, the prototype of an image database system, named IDB, has been developed... View full abstract»

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  • Visualizing structure in high-dimensional multivariate data

    Publication Year: 1991, Page(s):97 - 107
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (999 KB)

    We present and discuss several dynamic statistical graphics tools designed to help the data analyst visually discover and formulate hypotheses about the structure of multivariate data. All tools are based on the notion of the “data space,” a representation of multivariate data as a high-dimensional (hD) space which has a dimension for each variable (column of the data) and a point fo... View full abstract»

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  • Visualization of molecular dynamics via ray-tracing and animation in a vectorized environment

    Publication Year: 1991, Page(s):108 - 118
    Cited by:  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (851 KB)

    Scientific visualization methodologies are being utilized increasingly in attempts to understand physical phenomena via mathematical and simulation model results. Presented herein are the results of a visualization project which produced a vectorized, high-resolution, ray-traced animation of the dynamics of a protein molecule. The resulting animation was recorded on 35-mm file, with a resolution o... View full abstract»

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  • Animation of computer simulations of two-dimensional turbulence and three-dimensional flows

    Publication Year: 1991, Page(s):119 - 139
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1779 KB)

    One of the most challenging problems in fluid dynamics is understanding the properties of turbulent flows. The advent of large supercomputers permits the investigation of turbulence with great accuracy in two dimensions, but full three-dimensional problems are physically more complex and their study is currently limited to the case of simple flows. It is shown that the availability of a continuous... View full abstract»

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  • A numerically intensive computing environment: IBM 3090 and the PS/2 Model 80

    Publication Year: 1991, Page(s):140 - 155
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2175 KB)

    Recent advances in personal computer workstations, such as the IBM Personal System/2® Model 80 with its increased memory and CPU speed, loosely coupled with a host IBM 3090™ Processor, can provide considerable computing advantages for executing and visualizing numerically intensive computing (NIC) applications. We have developed a prototype visualization environment which demonstrate... View full abstract»

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  • Application of visualization tools in solid mechanics

    Publication Year: 1991, Page(s):156 - 166
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (944 KB)

    With increasingly complex digital simulations and computations, large volumes of numerical output are generated, and users must select more effective techniques for handling and displaying such output in order to extract relevant information. In this study, visualization techniques such as animation, tracking, and 2D/3D color displays are imbedded in implicit and explicit finite element codes for ... View full abstract»

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  • Graphic workstations and supercomputers: An integrated environment for simulation of fluid dynamics problems

    Publication Year: 1991, Page(s):167 - 183
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1370 KB)

    An integrated environment for simulation and visualization of physics and engineering problems of industrial interest has been set up at the IBM European Center for Scientific and Engineering Computing (ECSEC). This paper describes the environment, its components, and some experiments carried on at ECSEC to represent 3D objects displayed with the shading technique and the solution of fluid dynamic... View full abstract»

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  • Correlative visualizaton techniques for multidimensional data

    Publication Year: 1991, Page(s):184 - 204
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1738 KB)

    Critical to the understanding of data is the ability to provide pictorial or visual representations of those data, particularly in support of correlative data analysis. Despite the many advances in visualization techniques for scientific data over the last several years, there are still significant problems in bringing today's hardware and software technology into the hands of the typical scientis... View full abstract»

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  • Interactive Quantitative Visualization

    Publication Year: 1991, Page(s):205 - 226
    Cited by:  Papers (4)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1996 KB)

    Interactive Quantitative Visualization, a methodology to enhance scientific and engineering computational simulation prototyping, is defined. Appropriate strategies for implementing IQV in a workstation-based distributed computing environment are discussed. Object-oriented graphical tools and a new data management technique to support IQV and computational steering are described. Two examples of I... View full abstract»

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  • Picturing randomness on a graphics supercomputer

    Publication Year: 1991, Page(s):227 - 230
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    This paper provides a light introduction to a simple graphics technique which can be used to represent random data on a graphics supercomputer. The representation, called a “noise-sphere,” can be used to detect “bad” random-number generators with little training on the part of the observer. The system uses lighting and shading facilities of 3D extensions to the X-Window... View full abstract»

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  • An interactive graphic tool to plot the structure of large sparse matrices

    Publication Year: 1991, Page(s):231 - 237
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (583 KB)

    Many engineering and scientific problems involve the solution of large sparse linear systems. To determine an optimal solving strategy for such systems, it is essential to understand the large- and small-scale properties of the associated sparse matrices. We present a graphic tool to analyze the sparsity pattern and the numeric structure of these matrices. Through examples, drawn from our practica... View full abstract»

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  • Visualization in a VLSI design automation system

    Publication Year: 1991, Page(s):238 - 243
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (555 KB)

    Problems unique to the visualization of complex, partially automated design tasks such as VLSI system design are reviewed, and approaches are described. The design domain used to illustrate the approaches is chip-level “floor-planning,” an iterative-refinement design methodology for VLSI layout, routing and timing control. The general view structure and control structure are describe... View full abstract»

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  • Visualizing processes in neural networks

    Publication Year: 1991, Page(s):244 - 253
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (863 KB)

    A real-time visualization toolkit has been designed to study processes in neural network learning. To date, relatively little attention has been given to visualizing these complex, nonlinear systems. Two new visualization methods are introduced and then applied. One represents synaptic weight data as “bonds” of varying length embedded in the geometrical structure of a network. The ot... View full abstract»

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  • Three-dimensional visualization of many-body system dynamics

    Publication Year: 1991, Page(s):254 - 269
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1413 KB)

    This paper describes a graphic rendering system for use in visualizing the behavior of three-dimensional physical systems. The tool is general and allows the user to characterize a great variety of phenomena. The only requirement is that the physical system be represented by variables defined on quantifiable positions (sites) within a three-dimensional grid. The variables may be discrete (e.g., bi... View full abstract»

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  • Visualizing parallel execution of FORTRAN programs

    Publication Year: 1991, Page(s):270 - 282
    Cited by:  Papers (1)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (994 KB)

    As a first step toward the parallel execution analysis of FORTRAN programs, a tool called the Parallel Execution Profiler has been designed and implemented for the graphical postexecution analysis of parallel programs using the Parallel FORTRAN environment as a vehicle for both implementing parallel programs and tracing parallel events. The dynamic behavior of parallel execution is observed intera... View full abstract»

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  • A 3072 × 32-stage TDI imaging device

    Publication Year: 1991, Page(s):283 - 287
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (472 KB)

    A 3072 × 32-stage TDI charge-coupled imaging device is described. It is believed to be the first reported TDI imager suitable for 300-pel-per-inch document scanning. Its large photocharge capacity gives it the noise performance and dynamic range required for high-quality gray-scale and color imaging in publishing and museum applications. Design options for high-resolution TDI imagers and th... View full abstract»

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  • Traffic studies of unbuffered Delta networks

    Publication Year: 1991, Page(s):288 - 300
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1003 KB)

    This paper analyzes the performance of unbuffered Delta networks under a nonuniform (“hot-spot”) traffic pattern. Particular attention is paid to characterizing the overflow traffic of unsuccessfully transmitted packets. Analytic techniques are used to show that the overflow traffic from an unbuffered packet-switched Delta network is (fractionally) hotter than the offered load. Simul... View full abstract»

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Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Meet Our Editors

Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center