Now showing items 503-522 of 542

    • Using the Web as a Survey Tool: Results from the Second WWW User Survey 

      Pitkow, James Edward; Recker, Mimi (Georgia Institute of Technology, 1994)
      This paper presents the initial results from the second World Wide Web User Survey, which was advertised and made available to the Web user population for 38 days during October and November 1994. The survey is built on ...
    • Using Visualization to Foster Object-Oriented Program Understanding 

      Jerding, Dean Frederick; Stasko, John T. (Georgia Institute of Technology, 1994)
      Software development and maintenance tasks rely on and can benefit from an increased level of program understanding. Object-oriented programming languages provide features which facilitate software maintenance, yet the ...
    • Variational Implicit Surfaces 

      Turk, Greg; O'Brien, James F. (Georgia Institute of Technology, 1999)
      We introduce a new method of creating smooth implicit surfaces of arbitrary manifold topology. These surfaces are described by specifying locations in 3D through which the surface should pass, and also identifying locations ...
    • A Variational inference method for Switching Linear Dynamic Systems 

      Oh, Sang Min; Ranganathan, Ananth; Rehg, James M.; Dellaert, Frank (Georgia Institute of Technology, 2005)
      This paper aims to present a structured variational inference algorithm for switching linear dynamical systems (SLDSs) which was initially introduced by Pavlovic and Rehg. Starting with the need for the variational approach, ...
    • Vector Field Design on Surfaces 

      Zhang, Eugene; Mischaikow, Konstantin Michael; Turk, Greg (Georgia Institute of Technology, 2004)
      Vector field design on surfaces is necessary for many graphics applications: example-based texture synthesis, non-photorealistic rendering, and fluid simulation. A vector field design system should allow a user to create ...
    • Vicariously Sharing Captured Web Experiences through an Automated Recommendation System 

      Truong, Khai Nhut; Abowd, Gregory D.; Pimentel, Maria da Graca Campos (Georgia Institute of Technology, 2002)
      Our daily experiences are rich in content that we want to recall in the future. These previous experiences are often where we begin in our search for information needed when we work. In a community, we can rely on others ...
    • Video Temporal Compression Techniques to Facilitate Usability Evaluation 

      Santos, Paulo J.; Hudson, Scott E.; Guzdial, Mark; Badre, Albert (Georgia Institute of Technology, 1995)
      Video of users' interaction with interfaces is often collected as part of the usability evaluation process. Analyzing the video is a time-comsuming task, because of the length of the video. One way to reduce the time ...
    • The Virtual Annotation System 

      Harmon, C. Reid, Jr.; Patterson, Walter; Ribarsky, William; Bolter, J. David (Georgia Institute of Technology, 1996)
      Annotation is a key operation for developing understanding of complex data or extended spaces. We have developed a flexible set of annotation tools that can be placed in a variety of applications. These tools offer a full ...
    • Virtual Annotation: Verbal Communication in Virtual Reality 

      Verlinden, Jouke C.; Bolter, J. David; Van der Mast, Charles A.P.G. (Georgia Institute of Technology, 1993)
      This paper describes a system that was developed to explore communication in Virtual Reality. The system offers a simple and powerful method to embed verbal communication in simulations and visualizers by means of voice ...
    • Virtual Environments Research at the Georgia Tech GVU Center 

      Hodges, Larry F.; Bolter, J. David; Mynatt, Elizabeth D.; Ribarsky, William; Van Teylingen, Ron (Georgia Institute of Technology, 1993)
      The Grapics, Visualization, and Usability (GVU) Center was established at Georgia Tech in 1991 in recognition of the central importance of these three disciplines to the future growth of computing. The key emphasis ...
    • Virtual GIS: A Real-Time 3D Geographic Information System 

      Koller, David; Lindstrom, Peter; Ribarsky, William; Hodges, Larry F.; Faust, Nick L. (Nickolas Lea); Turner, Gregory (Georgia Institute of Technology, 1995)
      Advances in computer graphics hardware and algorithms, visualization, and interactive techniques for analysis offer the components for a highly integrated, efficient real-time 3D Geographic Information System. We have ...
    • Virtual Rear Projection: A Comparison Study of Projection Technologies for Large Interactive Displays 

      Summet, Jay W.; Abowd, Gregory D.; Corso, Gregory M.; Rehg, James Matthew (Georgia Institute of Technology, 2003)
      Rear projection of large-scale upright displays is often preferred over front projection because of the elimination of shadows that occlude the projected image. However, rear projection is not always a feasible option for ...
    • Virtual Rear Projection: An Empirical Study of Shadow Elimination for Large Upright Displays 

      Summet, Jay W.; Abowd, Gregory D.; Corso, Gregory M.; Rehg, James Matthew (Georgia Institute of Technology, 2003)
      Rear projection of large-scale upright displays is often preferred over front projection because of the elimination of shadows that occlude the projected image. However, rear projection is not always a feasible option for ...
    • The Virtual Venue: User-Computer Interaction in Information-Rich Virtual Environments 

      Bowman, Douglas A.; Hodges, Larry F.; Bolter, J. David (Georgia Institute of Technology, 1996)
      We present a virtual reality application that allows users to access embedded information within an immersive virtual environment. Due to the richness and complexity of this environment, interaction between the user and ...
    • 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 ...
    • Visual Coding and Tracking of Speech Related Facial Motion 

      Reveret, Lionel; Essa, Irfan A. (Georgia Institute of Technology, 2001)
      This article present a visual characterization of facial motions inherent with speaking. We propose a set of four Facial Speech Parameters (FSP): jaw opening, lips rounding, lips closure, and lips raising, to represent the ...
    • Visual Query of Time-Dependent 3D Weather in a Global Geospatial Environment 

      Ribarsky, William; Faust, Nick L. (Nickolas Lea); Wartell, Zachary Justin; Shaw, Christopher D.; Jang, Justin (Georgia Institute of Technology, 2002)
      A multi-key data organization is developed for handling a continuous stream of large scale, time-dependent, 3D weather data in a global environment. The structure supports inserting the data in real-time as they arrive or ...
    • 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 ...
    • Visual SLAM with a Multi-Camera Rig 

      Kaess, Michael; Dellaert, Frank (Georgia Institute of Technology, 2006)
      Camera-based simultaneous localization and mapping or visual SLAM has received much attention recently. Typically single cameras, multiple cameras in a stereo setup or omni-directional cameras are used. We propose a different ...
    • Visualization and Analysis Using Virtual Reality 

      Ribarsky, William; Bolter, J. David; Op den Bosch, Augusto; Van Teylingen, Ron (Georgia Institute of Technology, 1994)
      Current virtual reality technologies have not yet crossed the threshold of usability. Display resolutions in many cases render the user legally blind. Head- and hand-tracking devices are inaccurate and of very limited ...