Now showing items 1-20 of 547

    • Constructing a Global Representation from Multiple Stereo Images 

      Gardner, Warren F.; Hoshino, Junichi (Georgia Institute of Technology, 1991)
      The problem of using passive vision to construct 3-D descriptions of the environment is commonly encountered in computer vision and robotics. This paper focuses on the problem of merging multiple stereo images into a single ...
    • A method for interactive manipulation and animation of volumetric data 

      Jean, Yves Darly; Hodges, Larry F.; Pettigrew, Roderic (Georgia Institute of Technology, 1991)
      We outline an efficient method for visualizing and manipulating volumetric data, in particular, cardiac MRIdata sets. The approach is designed to allow interactive manipulation and real-time animation of volumetric data ...
    • What You See is What I Want: Experiences with the Virtual X Shared Window System 

      Smith, Ian; Mynatt, Elizabeth D. (Georgia Institute of Technology, 1991)
      There has been considerable interest in the problems associated with real-time, multi-user interfaces for computer supported collaborative work. This paper describes our experiences in designing and implementing Virtual ...
    • Multimedia Help: A Literature Survey and a Preliminary Experimental Design 

      Sukaviriya, Piyawadee (Noi) (Georgia Institute of Technology, 1991)
      Multimedia has become widely accepted as an effective interface for exploratory education. Despite this fact, little is known about this new form of interface - in which context is it appropriate and which media should be ...
    • A Knowledge-Based System for Capturing Human-Computer Interaction Events: CHIME 

      Badre, Albert; Santos, Paulo J. (Georgia Institute of Technology, 1991)
      The ability to capture and analyze human-computer interaction (HCI) data is an important part of the iterative interface development process. In this paper, we claim that in order to perform accurate and extensive analysis ...
    • CHIME: A Knowledge-based Computer-Human Interaction Monitoring Engine 

      Badre, Albert; Santos, Paulo J. (Georgia Institute of Technology, 1991)
      One of the prerequisites to improving the quality of a user interface is the ability to capture and analyze human-computer interaction data. We claim that in order to perform an accurate and extensive analysis of human-computer ...
    • An Integrated Taxonomy of Online Help Based on User Interface View 

      Sukaviriya, Piyawadee (Noi) (Georgia Institute of Technology, 1991)
      We developed a comprehensive help taxonomy by combining both user interface and help system attributes, ranging from help access interface, presentation, and supporting knowledge structure, to implementation. The taxonomy ...
    • One Step Towards Multimedia Help: Adding Context-Sensitive Animated Help as One Ingredient 

      Sukaviriya, Piyawadee (Noi) (Georgia Institute of Technology, 1991)
      Users often have difficulties relating general help information to the specific computer tasks which they are attempting to complete. A factor contributing to this problem is the distance between the space in which help ...
    • Simultaneous Generation of Stereoscopic Views 

      Adelson, Stephen Joel; Bentley, Jeffrey B.; Chong, In Seok; Hodges, Larry F.; Winograd, Joseph (Georgia Institute of Technology, 1991)
      Currently almost all computer graphic stereoscopic images are generated by doubling the work required to create a single image. In this paper we derive and analyze algorithms for simultaneous generation of the two views ...
    • Evaluation of Display Parameters Affecting User Performance of an Interactive Task in a Virtual Environment 

      McWhorter, Shane William; Hodges, Larry F.; Rodriguez, Walter E. (Georgia Institute of Technology, 1991)
      Although the popularity of virtual environments is widely known, little is known about the usability of virtual environment displays. This paper presents experimental data on the effect of virtual environment display ...
    • Tone Reproduction for Realistic Computer Generated Images 

      Tumblin, John Erwin (Jack); Rushmeier, Holly E. (Georgia Institute of Technology, 1991)
      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. This causes 'display range' problems ...
    • Visible Surface Ray-Tracing of Stereoscopic Images 

      Adelson, Stephen Joel; Hodges, Larry F. (Georgia Institute of Technology, 1991)
      Ray-tracing is a well-known method for producing realistic images. If we wish to view a ray-traced image stereoscopically, we must create two distinct views of the image: a left-eye view and a right-eye view. The most ...
    • The Graphics, Visualization, and Usability Center Brochure 

      Badre, Albert; Berger, Marc; Corso, Gregory M.; Davis, Elizabeth Thorpe; Ezquerra, Norberto F.; Foley, James D.; Govindaraj, T.; Guenter, Brian K.; Hodges, Larry F.; Hodges, Laurie Beth; Hudson, Scott E.; Lawton, Daryl T.; Mitchell, C. M. (Christine M.); Morton, Joan C.; Mynatt, Elizabeth D.; Putnam, Bill; Ribarsky, William; Rodriguez, Walter E.; Shonkwiler, Ronald W.; Sinclair, Michael J.; Stasko, John T.; Sukaviriya, Piyawadee (Noi); Trauner, Mary; Walker, Neff (Georgia Institute of Technology, 1991)
      Graphics, Visualization, and Usability (GVU) is an interdisciplinary area which draws its intellectual foundations from Computer Science, Psychology, Industrial and Systems Engineering, and Computer Engineering, and which ...
    • Applying Program Visualization Techniques to Aid Parallel and Distributed Program Development 

      Stasko, John T.; Appelbe, William F.; Kraemer, Eileen T. (Georgia Institute of Technology, 1991)
      Parallel and distributed programming is intrinsically more difficult than sequential programming, yet few effective tools or methodologies have been developed to help programmers understand the behavior of their parallel ...
    • A Neural Network Approach to Assess Myocardial Infarction 

      Pazos, Alejandro; Maojo, Victor; Martin, Fernando; Ezquerra, Norberto F. (Georgia Institute of Technology, 1991)
      The assessment of myocardial infarction is a complex information intensive process that involves the analysis and interpretation of cardiovascular nuclear medicine images. For a number of years, a knowledge-based approach ...
    • Understanding and Characterizing Program Visualization Systems 

      Stasko, John T.; Patterson, Charles W., Jr. (Georgia Institute of Technology, 1991)
      The general term 'program visualization' refers to graphical views or illustrations of the entities and characteristics of computer programs. This term along with many others, including data structure display, program ...
    • Coupling Application Design and User Interface Design 

      De Baar, Dennis J. M. J.; Foley, James D.; Mullet, Kevin E. (Georgia Institute of Technology, 1991)
      Building an interactive application requires, amongst other activities, the design of both a data model and a user interface. These two designs are often done separately, frequently by different individuals or groups. ...
    • Assessing Program Visualization Systems as Instructional Aids 

      Badre, Albert; Beranek, Margaret; Morris, John Morgan; Stasko, John T. (Georgia Institute of Technology, 1991)
      Recently, program visualization systems have received much attention as learning tools and as software understanding aids. How to evaluate these systems, however, is an open and unexplored area. In order to determine what ...
    • The Effects of Manipulating Recognition Variables on the Transition from Menus to Commands 

      Badre, Albert; Morris, John Morgan (Georgia Institute of Technology, 1991)
      The needs of users vary along with their degree of acquired expertise, with novices gladly accepting much-needed guidance and experts preferring to use the knowledge that they have gained with repeated use. The study of ...
    • Comparison of 3-D display formats for CAD applications 

      McWhorter, Shane William; Hodges, Larry F.; Rodriguez, Walter E. (Georgia Institute of Technology, 1991)
      Two experiments were performed to rank different types of display formats common to CAD applications in terms of geometric information conveyed and perceived realism of objects. Display types tested were: wireframe, wireframe ...