Now showing items 41-60 of 542

    • Visual Representations of Discrete Multivariate Data 

      Ribarsky, William; Hodges, Larry F.; Minsk, Robert; Bruchez, Marcel (Georgia Institute of Technology, 1992)
      Some methods are presented, involving shape and color distortions of 3-D objects, that are well suited for the correlated interpretation of complex, discrete data. Examples are given for data taken from molecular dynamics ...
    • Knowledgeable Development Environments Using Shared Design Models 

      Neches, Robert; Foley, James D.; Szekely, Pedro; Sukaviriya, Piyawadee (Noi); Luo, Ping; Kovacevic, Srdjan; Hudson, Scott E. (Georgia Institute of Technology, 1992)
      We describe MASTERMIND, a step toward our vision of a knowledge-based design-time and run-time environment where human-computer interface development is centered around an all-encompassing design model. The MASTERMIND ...
    • Algorithms for Rendering Cubic Curves 

      Watson, Benjamin A. (Benjamin Allen); Hodges, Larry F. (Georgia Institute of Technology, 1992)
      We present two integer-only algorithms to be used in tandem for rendering cubic functions and parametric cubic curves with ratyional coefficients. We then show how to take advantage of curve shape to improve algorithm ...
    • Tone Reproduction for Realistic Computer Generated Images 

      Tumblin, John Erwin (Jack); Rushmeier, Holly E. (Georgia Institute of Technology, 1992)
      Radiosity and other global illumination methods for image synthesis calculate the 'real world' radiance values of a scene instead of the display radiance values that will represent them. Ad-hoc conversions cause serious ...
    • Built-In User Modelling Support, Adaptive Interfaces, and Adaptive Help in UIDE 

      Sukaviriya, Piyawadee (Noi); Foley, James D. (Georgia Institute of Technology, 1992)
      Developing an adaptive interface requires a user interface which can be adapted, a user model, and an adaptation strategy. Research on adaptive interfaces in the past lacks support from user interface tools which allow ...
    • Automatic Generation of Context-Sensitive "Show and Tell" Help 

      Sukaviriya, Piyawadee (Noi); De Graaff, Johannes J. (Hans) (Georgia Institute of Technology, 1992)
      Textual help has become insufficient to guide users to carry out procedural tasks. Help for a direct manipulation interface requires that textual help be verbose in order to describe procedures accurately and specifically. ...
    • Real-Time Audio Spatialization with Inexpensive Hardware 

      Burgess, David A. (Georgia Institute of Technology, 1992)
      There are a variety of potential uses for interactive spatial sound in human-machine interfaces, but tremendous computational costs have made most of these applications impractical. Recently, however, single-chip digital ...
    • Mapping GUIs to Auditory Interfaces 

      Mynatt, Elizabeth D.; Edwards, W. Keith (Georgia Institute of Technology, 1992)
      This paper describes work to provide mappings between X-based graphical interfaces and auditory interfaces. In our system, dubbed Mercator, this mapping is transparent to applications. The primary motivation for this work ...
    • Metaphors for Nonvisual Computing 

      Mynatt, Elizabeth D.; Edwards, W. Keith (Georgia Institute of Technology, 1992)
      Many of the systems in this book exemplify negotiating a technological barrier in order to provide access to a computer or other device. The necessity of providing access of any kind to existing devices has often outweighed ...
    • Montage: An X-Based Multimedia Electronic Mail System 

      Edwards, W. Keith (Georgia Institute of Technology, 1992)
      This paper describes an extensible multimedia electronic mail system called Montage which is based on the X Window System. Montage supports the composition, transmission, and viewing of structured documents consisting of ...
    • Using Animation to Design, Document and Trace Object-Oriented Systems 

      Shilling, John J.; Stasko, John T. (Georgia Institute of Technology, 1992)
      Current diagramming techniques for the development and documentation of object-oriented designs largely emphasize capturing relationships among classes. Such techniques cannot capture full designs because the static nature ...
    • Tidy Animations of Tree Algorithms 

      Stasko, John T.; Turner, Carlton Reid (Georgia Institute of Technology, 1992)
      In software visualization and algorithm animation it is important that advances in system technologies are accompanied by corresponding advances in animation presentations. In this paper we describe methods for animating ...
    • Three-Dimensional Computation Visualization 

      Stasko, John T. (Georgia Institute of Technology, 1992)
      Systems supporting the visualization and animation of algorithms, programs, and computations have focused primarily on two-dimensional graphics to date. In this paper we identify the need for three-dimensional graphics in ...
    • Aggregation Bias and the Use of Regression in Evaluating Models of Human Performance 

      Walker, Neff; Catrambone, Richard (Georgia Institute of Technology, 1992)
      Regression analysis is increasingly being used to provide confirmatory evidence for models of human performance. The amount of information made available to judge these models is reduced because clearly established standards ...
    • Auditory Presentation of Graphical User Interfaces 

      Mynatt, Elizabeth D. (Georgia Institute of Technology, 1992)
      This paper describes work to provide mappings between X-based graphical interfaces and auditory interfaces. In our system, dubbed Mercator, this mapping is transparent to applications. The primary motivation for this work ...
    • Frequency Characteristics of Moving Images 

      Geunter, Brian (Georgia Institute of Technology, 1992)
      The class of multidimensional signals we will be dealing with is three dimensional: x, y, and time. We want to compute the Fourier transform of a moving image and the easiest way to approach the problem is to begin by ...
    • Ray-Affine Functions: A General Dual Form to Describe Curves, Surfaces, and Volumes 

      Akleman, Ergun; Hodges, Larry F.; Mersereau, Russell M. (Georgia Institute of Technology, 1992)
      In computer graphics modeling, two different forms are used to represent curves and surfaces: implicit and parametric. Functions that can be expressed both in implicit and parametric forms are called dual forms. To date, ...
    • Techniques for Low Cost Spatial Audio 

      Burgess, David A. (Georgia Institute of Technology, 1992)
      There are a variety of potential uses for interactive spatial sound in human-computer interfaces, but hardware costs have made most of these applications impractical. Recently, however, single-chip digital signal processors ...
    • Psychophysical Models in Image Synthesis 

      Geunter, Brian (Georgia Institute of Technology, 1992)
      It has long been known that the human visual system (HVS) is not a camera; the eye-retina-brain combination does not simply record a visual scene the way a movie camera or video camera does. Instead, the HVS processes the ...
    • The Mercator Environment: A Nonvisual Interface to X Windows and Unix Workstations 

      Mynatt, Elizabeth D.; Edwards, W. Keith (Georgia Institute of Technology, 1992)
      User interfaces to computer workstations are heavily dependent on visual information. These Graphical User Interfaces, commonly found on powerful desktop computers, are almost completely inaccessible to blind and visually ...