Now showing items 389-408 of 542

    • A Review of the Fundamental Effects of Multimedia Information Presentation on Learning 

      Najjar, Lawrence Joseph (Georgia Institute of Technology, 1995)
      This paper examines the question, "Does multimedia information presentation help people learn?" The paper begins by describing general learning theory and several specific theories more closely related to multimedia and ...
    • Revisiting and Validating a Model of Two-Thumb Text Entry 

      Clarkson, Edward C.; Lyons, Kenton Michael; Clawson, James; Starner, Thad (Georgia Institute of Technology, 2006)
      MacKenzie and Soukoreff have previously introduced a Fitts' Law--based performance model of expert two--thumb text entry on mini--QWERTY keyboards. In this work we validate the original model and update it to account for ...
    • The Right Tool at the Right Time -- Investigation of Freehand Drawing as an Interface to Knowledge Based Design Tools 

      Do, Ellen Yi-Luen (Georgia Institute of Technology, 1998)
      Designers use different symbols and configurations in their drawings to explore alternatives and to communicate with each other. For example, when thinking about spatial arrangements, they draw bubble diagrams; when thinking ...
    • Ringing Js refinements 

      Schaefer, Scott; Rossignac, Jaroslaw R. (Georgia Institute of Technology, 2007)
      Both the four-point and the uniform cubic B-spline refinement (i.e. subdivision) schemes double the number of vertices of a closed-loop polygonal curve jP and respectively produce sequences of vertices fk and bk. The Js ...
    • Robot Catching 

      Riley, Marcia; Atkeson, Christopher G. (Georgia Institute of Technology, 2000)
      Our focus is on creating interesting, ralistic behaviors for humanoid robots and virtual charaters. Among the methods we use to create human-like movements are a template-based approach, where example movements from humans ...
    • Robot Herds: Group Behaviors for Systems with Significant Dynamics 

      Hodgins, Jessica K.; Brogan, David C. (Georgia Institute of Technology, 1994)
      Birds, fish, and many other animals are able to move gracefully and efficiently as a herd, flock, or school. We would like to reproduce this behavior for herds of artificial creatures with significant dynamics. This paper ...
    • Robust Generative Subspace Modeling: The Subspace t Distribution 

      Khan, Zia; Dellaert, Frank (Georgia Institute of Technology, 2004)
      Linear latent variable models such as statistical factor analysis (SFA) and probabilistic principal component analysis (PPCA) assume that the data are distributed according to a multivariate Gaussian. A drawback of this ...
    • Robust Multi-Robot Coordination in Noisy and Dangerous Environments 

      Balch, Tucker; Sariel, Sanem (Georgia Institute of Technology, 2005)
      In this paper we present the design and implementation of a complete framework for multi-robot coordination in which robots collectively execute inter-dependent tasks of an overall complex mission requiring diverse ...
    • Robust Tracking of People by a Mobile Robotic Agent 

      Tanawongsuwan, Rawesak; Stoytchev, Alexander; Essa, Irfan A. (Georgia Institute of Technology, 1999)
      We present methods for tracking people in dynamic and changing environments from camera mounted on a mobile robot. We describe processes to extract color, motion, and depth information from video and we present methods to ...
    • Rotation algorithm artifacts in stereoscopic images 

      Hodges, Larry F.; McAllister, David F. (Georgia Institute of Technology, 1991)
      We examine the effect of using rotations for generation of the left- and right-eye perspective views of a stereoscopic image. We show that this approach to stereoscopic display of perspective views results in vertical ...
    • Run-Based Multi-Point Line Drawing 

      Lee, Eun Jae; Hodges, Larry F. (Georgia Institute of Technology, 1993)
      This paper describes a hybrid method which uses structural properties of raster lines, such as runs, to improve the efficiency of multi-point line generation. A quadruple-step algorithm is developed which requires fewer ...
    • The Safari Interface for Visualizing Time-Dependent Volume Data Using Iso-Surfaces and a Control Plane 

      Kettner, Lutz; Rossignac, Jaroslaw R.; Snoeyink, Jack (Georgia Institute of Technology, 2001)
      We describe a prototype interface for the visualization of time-varying volume data of one or several variables as they occur in scientific and engineering applications. We partition the data dimensions into a 3D viewer ...
    • A Sampling of Surface Reconstruction Techniques 

      Dinh, Huong Quynh (Georgia Institute of Technology, 2000)
      The goal of surface reconstruction is to obtain a continuous representation of a surface described by a cloud of points. This problem is often called the unorganized points problem because the cloud of points has no ...
    • A Second Generation User Interface Design Environment: The Model and the Runtime Architecture 

      Sukaviriya, Piyawadee (Noi); Foley, James D.; Griffith, Todd W. (Georgia Institute of Technology, 1992)
      Several obstacles exist in the user interface design process which distract a developer from designing a good user interface. One of the problems is the lack of an application model to keep the designer in perspective with ...
    • Semi-Automated and Interactive Construction of 3D Urban Terrains 

      Wasilewski, Anthony A.; Faust, Nick L. (Nickolas Lea); Ribarsky, William (Georgia Institute of Technology, 1999)
      We have developed a set of tools that attack the problem of rapid construction of 3D urban terrains containing buildings, roads, trees, and other features. Heretofore, the process of creating such databases has been ...
    • Semi-Automated Landscape Feature Extraction and Modeling 

      Wasilewski, Anthony A.; Faust, Nick L. (Nickolas Lea); Grimes, Matthew; Ribarsky, William (Georgia Institute of Technology, 2002)
      We have developed a semi-automated procedure for generating correctly located 3D tree objects from overhead imagery. Cross-platform software partitions arbitrarily large, geocorrected and geolocated imagery into manageable ...
    • Shadow Elimination and Blinding Light Suppression for Interactive Projected Displays 

      Summet, Jay W.; Flagg, Matthew; Cham, Tat-Jen; Rehg, James M.; Sukthankar, Rahul (Georgia Institute of Technology, 2006)
      A major problem with interactive displays based on front-projection is that users cast undesirable shadows on the display surface. This situation is only partially-addressed by mounting a single projector at an extreme ...
    • Shape and Motion from Linear Features 

      Gardner, Warren F.; Lawton, Daryl T. (Georgia Institute of Technology, 1993)
      This paper introduces a technique for extracting structure and motion using directionally selective matches between linear features. A world-centered coordinate system is used to make these computations without the ...
    • Sharpen&Bend: Recovering Curved Edges in Triangle Meshes Produced by Feature-Insensitive Sampling 

      Attene, Marco; Falcidieno, B. (Bianca); Spagnuolo, Michela; Rossignac, Jaroslaw R. (Georgia Institute of Technology, 2003)
      Various 3D acquisition, analysis, visualization and compression approaches sample surfaces of 3D shapes in a uniform fashion, without any attempt to align the samples with the sharp edges and corners of the original shape. ...
    • ShieldTester: Cell-to-cell Visibility Test for Surface Occluders 

      Navazo, Isabel; Rossignac, Jaroslaw R.; Jou, Joan; Shariff, Rahim (Georgia Institute of Technology, 2003)
      We present a novel Cell-To-Cell Visibility (C2CV) algorithm, which given two polyhedra, A and B, and a connected and oriented manifold triangle mesh, S, offers a simple, fast, and conservative test for detecting when A and ...