DevLan/vispubs huggingface dataset:
Virtual spacetime: an environment for the visualization of curved spacetimes via geodesic flows
Authors: Steve Bryson
Published at Vis, 1992

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 head-position-sensitive stereo CRT system is used for display. A hand-position-sensitive glove controller is used to control the initial positions and directions of geodesics in spacetime. A multiprocessor graphics workstation is used for computation and rendering. Several techniques for visualizing the geometry of spacetime using geodesics are discussed. Although this work is described exclusively in the context of physical four-dimensional spacetimes, it extends to arbitrary geometries in arbitrary dimensions. While this work is intended for researchers, it is also useful for the teaching of general relativity.&lt;&lt;ETX&gt;&gt;
VISAGE: an object-oriented scientific visualization system
Authors: William J. Schroeder, William E. Lorensen, G. D. Montanaro, Christopher R. Volpe
Published at Vis, 1992

VISAGE, a scientific visualization system implemented in an object-oriented, message passing environment, is described. The system includes over 500 classes ranging from visualization and graphics to Xlib and Motif user interface. Objects are created using compiled C and interact through an interpreted scripting language. The result is a flexible yet efficient system that has found wide application. The object architecture, the major issues faced when designing the visualization classes, and sample applications are also described.&lt;&lt;ETX&gt;&gt;
Visual query specification in a multimedia database system
Authors: Daniel A. Keim, Vincent Y. Lum
Published at Vis, 1992

A visual interface for a multimedia database management system (MDBMS) is described. DBMS query languages are linear in syntax. Although natural language interfaces have been found to be useful, natural language is ambiguous and difficult to process. For queries on standard (relational) data, these difficulties can be avoided with the use of a visual, graphical interface to guide the user in specifying the query. For image and other media data which are ambiguous in nature, natural language processing, combined with direct graphical access to the domain knowledge, is used to interpret and evaluate the natural language query. The system fully supports graphical and image input/output in different formats. The combination of visual effect and natural language specification, the support of media data, and the allowance of incremental query specification simplify the process of query specification not only for image or multimedia databases but also for all databases.&lt;&lt;ETX&gt;&gt;
Visualization for the document space
Authors: X. Lin
Published at Vis, 1992

An information retrieval frame work that promotes graphical displays, and that will make documents in the computer visualizable to the searcher, is described. As examples of such graphical displays, two simulation results of using a Kohonen feature map to generate map displays for information retrieval are presented and discussed. The map displays are a mapping from a high-dimensional document space to a two-dimensional space. They show document relationships by various visual cues, such as dots, links, clusters, and areas, as well as their measurement and spatial arrangement. Using the map displays as an interface for document retrieval systems, the user is provided with richer visual information to support browsing and searching.&lt;&lt;ETX&gt;&gt;
Visualization in anthropology: reconstruction of human fossils from multiple pieces
Authors: Alan D. Kalvin, David Dean, Jean-Jaques Hublin, M. Braun
Published at Vis, 1992

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.&lt;&lt;ETX&gt;&gt;
Visualization in the neurosciences: utility in research, teaching, and clinical practice
Authors: Stuart A. Tobet, Joan C. King, Steven L. Wertheim, Frank H. Duffy
Published at Vis, 1992

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.&lt;&lt;ETX&gt;&gt;
Visualization of cardiac bioelectricity-a case study
Authors: Robert S. MacLeod, Christopher R. Johnson 0001, Michael A. Matheson
Published at Vis, 1992

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 measured from the surface of the heart to potentials and currents throughout the volume of the thorax (a form of the forward problem in electrocardiography). Both interactive and batch-mode graphics programs were developed to view, manipulate, and interactively edit the model geometry. Results are presented.&lt;&lt;ETX&gt;&gt;
Visualization of fuzzy data using generalized animation
Authors: Nahum D. Gershon
Published at Vis, 1992

Methods are presented for the visualization of fuzzy data based on the sensitivity of the human visual system to motion and dynamic changes, and the ease of which electronic display devices can change their display. The methods include taking an otherwise static image and displaying in an animation loop either its segmented components or a series of blurred versions of the whole image. This approach was applied to sea-surface temperature data and was found to be effective in showing fuzzy details embedded in the data, and in drawing the viewer's attention. This approach and these methods could play a significant role in the display of browse products for massive data and information systems.&lt;&lt;ETX&gt;&gt;
Visualization of high resolution, three-dimensional, nonlinear finite element analyses
Authors: Mark A. Christon, T. Spelce
Published at Vis, 1992

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 rigid body dynamics effects is presented, with a brief discussion of a direct-to-videodisk animation strategy.&lt;&lt;ETX&gt;&gt;
Visualization of neutron scattering data using AVS
Authors: R. Popovic
Published at Vis, 1992

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 demonstrated the benefits of using visualization in exploring material science data, and also proved that it is possible to satisfy most of the requirements ISIS researchers place on a software environment by using application visualization systems (AVSs), and without writing any new code. The problems encountered and possible solutions are discussed.&lt;&lt;ETX&gt;&gt;
Visualization of second order tensor fields and matrix data
Authors: Thierry Delmarcelle, Lambertus Hesselink
Published at Vis, 1992

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 facilitate their visualization and to produce a continuous representation of the data. The focus is on interactively sensing and exploring real and symmetric second-order tensor data by generalizing the vector notion of streamline to the tensor concept of hyperstreamline. The importance of a structural analysis of the data field analogous to the techniques of vector field topology extraction in order to obtain a unique and objective representation of second-order tensor fields is stressed.&lt;&lt;ETX&gt;&gt;
Visualization of simulated airflow in a clean room
Authors: Koji Koyamada
Published at Vis, 1992

Techniques for visualizing a simulated air flow in a clean room are developed by using an efficient cell traverse of tetrahedral cells generated from irregular volumes. The proposed techniques, probing and stream line display, are related to the measurement techniques used in actual clean rooms. The efficient traverse makes it possible to move freely around a given irregular volume and to spawn off stream lines. A successful application of these techniques to a problem in a clean room is also described.&lt;&lt;ETX&gt;&gt;
Visualization requirements in the atmospheric and environmental sciences (five case study reports)
Authors: Theresa-Marie Rhyne, Mark Bolstad, Penny Rheingans, Lynne Petterson, Walter Shackelford, Mike E. Botts, E. Pepke, K. W. Johnson, Bill Hibbard, Charles R. Dyer, Brian E. Paul, Lloyd Treinish
Published at Vis, 1992

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. Florida State University's building of a new scientific visualization package, Sci An, is reported. This is followed by a discussion of the design and implementation of VIS-AD, an experimental laboratory for developing scientific algorithms, at the University of Wisconsin-Madison. The visualization of global atmospheric data at IBM Thomas J. Watson Research Center is highlighted.&lt;&lt;ETX&gt;&gt;
Visualizing a three dimensional hydrodynamic model
Authors: C. S. Jones, J. A. Baca
Published at Vis, 1992

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-scale model to verify the techniques; and visualizing the full-scale model. Problems encountered and resolutions of problems at each stage are described. Validation, as well as insights revealed about the model through the preliminary and final visualization, are discussed. Current application of visualization techniques to the model is reported.&lt;&lt;ETX&gt;&gt;
Visualizing code profiling line oriented statistics
Authors: Stephen G. Eick, Joseph L. Steffen
Published at Vis, 1992

A visualization technique that makes it possible to display and analyze line count profile data is described. The technique is to make a reduced picture of code with the line execution counts identified with color. Hot spots are shown in red, warm spots in orange, and so on. It is possible to identify nonexecuted code and nonexecutable code such as declarations and static tables.&lt;&lt;ETX&gt;&gt;
Visualizing n-dimensional implications of two-dimensional design decisions
Authors: Stephen M. Ervin
Published at Vis, 1992

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 simulations, the focus is on how abstractions and representational conventions can be used to gauge visual and environmental effects of proposals for landscape change, in a dynamic interactive computer-aided design environment.&lt;&lt;ETX&gt;&gt;
Visualizing seafloor structures with satellite gravity measurements
Authors: J. McLeod, C. Small
Published at Vis, 1992

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.&lt;&lt;ETX&gt;&gt;
Visualizing the Universe
Authors: M. J. Geller, E. E. Flaco, D. G. Fabricant, B. Estus
Published at Vis, 1992

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-D) map of the Universe. It is shown that visualization techniques are important for exploring and analyzing the data, for comparing the data with models, and for designing the future. Computer animation of the data is a way of bringing the maps before the public.&lt;&lt;ETX&gt;&gt;
Visualizing wind velocities by advecting cloud textures
Authors: Nelson L. Max, Roger Crawfis, Dean Williams
Published at Vis, 1992

In order to visualize both clouds and wind in climate simulations, clouds were rendered using a 3D texture which was advected by the wind flow. The simulation is described. Rendering, the advection of texture coordinates, and haze effects are discussed. Results are presented.&lt;&lt;ETX&gt;&gt;
Volume rendering on a distributed memory parallel computer
Authors: T. Todd Elvins
Published at Vis, 1992

A prototype implementation of a splatting volume renderer (SVR) on a commercially available distributed memory MIMD (multiple instruction stream, multiple data stream) parallel processor, the nCUBE2, is described. Some relatively good rendering times can be achieved with the nCUBE SVR. Message-passing bottlenecks occur when large numbers of floating-point values have to be collected from every processor for every picture. For large images this is a severe limitation. An initial implementation of a SVR on a distributed memory parallel computer demonstrates the need for parallel computers with high-bandwidth connections between processors, and also for new parallelizable volume rendering algorithms.&lt;&lt;ETX&gt;&gt;
Volume warping
Authors: T. J. True, J. F. Hughes
Published at Vis, 1992

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 volumetric modeling techniques and can be applied to any form of volumetric data.&lt;&lt;ETX&gt;&gt;
An Interface for Interactive Spatial Reasoning and Visualization
Authors: James R. Osborn, Alice M. Agogino
Published at CHI, 1992

An interface for software that creates a natural environment for engineering graphics students to improve their spatial reasoning and 3D visualization skills is described. The skills of interest involve spatial transformations and rotations, specifically those skills that engineers use to reason about 3D objects based on 2D representations. The software uses an intuitive and interactive interface allowing direct manipulation of objects. Animation capability is provided to demonstrate the relationship between arbitrary positions of an object and standard orthographic views. A second skill of interest requires visualization of a cutting-plane intersection of an object. An interface is developed which allows intuitive positioning of the cutting-plane utilizing the metaphor of a “pool of water” in which the object is partially submerged. The surface of the water represents the cutting plane. Adjustment of the pool depth combined with direct manipulation of the object provides for arbitrary positioning of the cutting-plane. Subjective evaluation of the software thus far indicates that students enjoy using it and find it helpful. A formal testing plan to objectively evaluate the software and interface design is underway.
An Introduction to Zeus: Audiovisualization of Some Elementary Sequential and Parallel Sorting Algorithms
Authors: Marc H. Brown
Published at CHI, 1992

Systems for algorithm animation provide facilities for users to view and interact with an animation of an algorithm, and for programmers to develop such animations. For a user, there are ways to control the data given to an algorithm, the ensemble of active views, and the execution of the algorithm. For a programmer, producing an animation of an algorithm becomes almost as easy as producing a textual trace of it.
Dynamic Queries for Information Exploration: An Implementation and Evaluation
Authors: Christopher Ahlberg, Christopher Williamson, Ben Shneiderman
Published at CHI, 1992

We designed, implemented and evaluated a new concept for direct manipulation of databases, called dynamic queries, that allows users to formulate queries with graphical widgets, such as sliders. By providing a graphical visualization of the database and search results, users can find trends and exceptions easily. Eighteen undergraduate chemistry students performed statistically significantly faster using a dynamic queries interface compared to two interfaces both providing form fill-in as input method, one with graphical visualization output and one with all-textual output. The interfaces were used to explore the periodic table of elements and search on their properties.
Human-Computer Interaction Research at Georgia Institute of Technology
Authors: James D. Foley, Christine M. Mitchell, Neff Walker
Published at CHI, 1992

HCI research at Georgia Tech is found in three cooperating groups: the Engineering Psychology and Experimental Psychology Programs in the School of Psychology, the Center for Human-Machine Systems Research in the School of Industrial and Systems Engineering, and the interdisciplinary Graphics, Visualization and Usability (GVU) Center. We cooperate via cross-listed courses, having students in one area take a minor in another area, collaborative research projects, serving on Ph. D. committees, joint colloquia and brown bag lunches, and joint appointments. The GVU Center (housed in the College of Computing) and Cognitive Science Program (sponsored by Psychology, Industrial and Systems Engineering, and the College of Computing) involves a number of the same faculty, further enhancing our collaborations.
Multimedia help: a prototype and an experiment
Authors: Piyawadee Noi Sukaviriya, Ellen Isaacs, Krishna Bharat
Published at CHI, 1992

On-line help systems have not paralleled recent advances in user interface technology. In particular, traditional textual help does not support visualization of the interaction processes needed to complete tasks, especially in graphical interfaces. In this demonstration, we present an experimental prototype which is capable of presenting help information in text, audio, static graphics, video, and context-sensitive animation. The prototype is used in a study on how multimedia technology enhances user performance.
Pointing and Visualization
Authors: William C. Hill, James D. Hollan
Published at CHI, 1992

The nature of visualizations and the social uses to which they are put rely heavily on pointing behavior. In the context of a switched telephone network visualization, this tape illustrates novel task-specific pointing facilities.
The MidasPlus molecular modeling system
Authors: Thomas E. Ferrin, Conrad C. Huang, Gregory S. Couch, Eric F. Pettersen, Robert Langridge
Published at CHI, 1992

MidasPlus [6, 7] is an interactive molecular modeling system used to depict three dimensional macromolecular structures such as proteins and nucleic acids, to study how these structures spatially and chemically interact, and to study how small molecules such as drugs bind with these macromolecules, Effective interaction with macromolecular structures presents several challenges: the molecules consist of thousands to tens of thousands of atoms and the scientist user is easily overwhelmed by the sheer volume of data if the displayed information is not limitied and presented in a rational manner. The intellectual process of understanding the structure and function of molecules is linked to visualizing the complex spatial relationships within these structures, and since the user ia only presented images of models, this intellectual process must proceed without being able to physically handle and make experimental “hand driven” modifications of a physical model. Finally, macromolecules are often globular in shape, of course bear no resemblance to macroscopic physical objects in the real world, and hence make it inherently difficult for the human visual system to accurately perceive the complex spatial relationships that are ao crucial to chemical activity.
TreeViz: treemap visualization of hierarchically structured information
Authors: Brian Johnson
Published at CHI, 1992

Scientific visualization has received a great deal of attention in recent years. There are many reasons for this but chief among them is the simple observation that humans have difficulty extracting meaningful information from large volumes of data. Our increasing ability to produce, disseminate, and collect information has quite naturally led to a demand for tools which aid in the analysis of this information and support our intuition.
Value bars: an information visualization and navigation tool for multi-attribute listings
Authors: Richard Chimera
Published at CHI, 1992

INTRODUCTION The need for better information visualization and navigation tools is widely recognized [1], [5]. It is difficult to sort and continuously resort tables or listings by more than one attribute and still maintain an understanding of the origin and natural position of items. The concept of “value bars” was created to help users visualize and navigate large information spaces that have characteristics of a lineoriented listing with multiple, quantifiable attributes. In general, value bars are useful for analyzing multi-attxibute listings and tables where a particular sort order should be maintained and analysis of the top percentage of items within each attribute is beneficial, The main features are: “ the ability to see in one view an attribute distribution overview for the “important” items (as defined by attribute values) in a fisheye view [3] variant, ● very small screenspace footprint, ● the ability to see at once many attribute overviews, ● the ability to locate outliers and exceptions, and ● extremely low cognitive load navigation. This work was spawned from the study of a novel way to visualize large tree data structures, called Tree-maps [4]. A more detailed description, discussion, future value bars research, and results of a usability study can be found in [2].