Now showing items 1-20 of 27

    • On the Utility of Semantic Constraints 

      Smith, G.; Stuerzlinger, W. (The Eurographics Association, 2001)
      Content creation for computer graphics applications is a laborious process that requires skilled personnel. One fundamental problem is that manipulation of 3D objects with 2D user interfaces is very difficult for nonexperienced ...
    • Perception and Mental Rotation of 3D-Freeform Surfaces in an Immersive Projection System 

      Gaggioli, Andrea; Breining, Ralf (The Eurographics Association, 2001)
      This paper reports on three experiments performed to examine the effects of different visualization techniques of 3D computer-generated freeform surfaces on subjects perceptual and cognitive performance while doing ...
    • Two-Handed Through-the-Lens-Techniques for Navigation in Virtual Environments 

      Stoev, Stanislav L.; Schmalstieg, Dieter; Straßer, Wolfgang (The Eurographics Association, 2001)
      We present a tool set of techniques for navigation in virtual environments. Based on a through-the-lens concept, the user is enabled to simultaneously view the surrounding virtual world and an arbitrary location of the ...
    • Spring-Based Manipulation Tools for Virtual Environments 

      Koutek, Michal; Post, Frits H. (The Eurographics Association, 2001)
      In this paper we present new tools for user interaction with virtual worlds, to bring more natural behavior into the manipulation of objects in virtual environments. We present some principles of physically realistic ...
    • An Investigation into the design of an Interface for Interaction with a Virtual Environment representing a four-dimensional object 

      Wellard, R.; Chapman, S.C. (The Eurographics Association, 2001)
      Five methods of mapping the input from a six-degrees-of-freedom input device to the set of rotations available in four-dimensional space are evaluated with respect to how well they can be used to perform four-dimensional ...
    • Command and Control Cube : a Shortcut Paradigm for Virtual Environments 

      Grosjean, Jérôme; Coquillart, Sabine (The Eurographics Association, 2001)
      New immersive virtual environments (VE) such as the Responsive WorkbenchTM provide users with a very attractive way of interacting with 3D computer-generated worlds. The feeling of immersion is one of the many advantages ...
    • Measuring an Illusion:The Influence of System Performance on Size Perception in Virtual Environments 

      Hofmann, Jan; Jäger, Thomas J.; Deffke, Thorben; Bubb, Heiner (The Eurographics Association, 2001)
      The effects of system performance variations on people s estimation of virtual object sizes in a multi-sided back projection virtual reality system have been explored. Seventy-seven participants adjusted the sizes of three ...
    • Volume Rendering in a Virtual Environment 

      Schulze-Döbold, Jürgen; Wössner, Uwe; Walz, Steffen P.; Lang, Ulrich (The Eurographics Association, 2001)
      This paper describes a flexible rendering system for scalar volume data which has been integrated into the visualization system COVISE. It allows direct volume rendering based on texture mapping hardware on both the desktop ...
    • Design review and visualization steering using the INQUISITIVE interaction toolkit 

      Sastry, L.; Boyd, D. R. S.; Wilson, M. D. (The Eurographics Association, 2001)
      This paper describes the architecture of an interaction toolkit for creating virtual environments. The toolkit contains interaction techniques, interaction objects such as menus, spanner and a runtime manager to interface ...
    • Presence a global media quality metric 

      Lessiter, J.; Freeman, J. (The Eurographics Association, 2001)
      In this paper presence (a sense of being there in a mediated environment) is proposed as a global quality metric with which to evaluate advanced multi-modal media systems. The development of a new presence selfreport ...
    • Adaptive Networking for Tele-Immersion 

      Leigh, Jason; Yu, Oliver; Schonfeld, Dan; Ansari, Rashid; He, Eric; Nayak, Atul; Ge, Jinghua; Krishnaprasad, Naveen; Park, Kyoung; Cho, Yong-joo; Hu, Liujia; Fang, Ray; Verlo, Alan; Winkler, Linda; DeFanti, Thomas A. (The Eurographics Association, 2001)
      Tele-Immersive applications possess an unusually broad range of networking requirements. As high-speed and Quality of Service-enabled networks emerge, it will becoming more difficult for developers of Tele-Immersion ...
    • The integration of immersive Virtual Reality applications into Catia V5 

      Rantzau, D.; Maurer, F.; Mayer, C.; Löffler, R.; Riedel, O.; Scharm, H.; Banek, D. (The Eurographics Association, 2001)
      During the last few years a wide range of stand-alone virtual reality (VR) applications have been developed. The typical data source for most of these applications are 3D styling tools or 3D-CAD systems from which data has ...
    • COVISE and the Virtual Intuitive Simulation Test bed 

      Wierse, Andreas (The Eurographics Association, 2001)
      This paper describes the developments performed in the EU-project VISiT (Virtual Intuitive Simulation Test bed). The goal of the project is the development of an intuitive simulation test bed based on Virtual Reality ...
    • VIRPI: A High-Level Toolkit for Interactive Scientific Visualization in Virtual Reality 

      GERMANS, Desmond; SPOELDER, Hans J.W.; RENAMBOT, Luc; BAL, Henri E. (The Eurographics Association, 2001)
      Research areas that require interactive visualization of simulation data tend to dismiss virtual reality due to the lack of accessible tools for application specialists. This paper presents an integral toolkit for interactive ...
    • COMPUTER GRAPHICS OPTIQUE Optical Superposition of Projected Computer Graphics 

      Majumder, Aditi; GregWelch, (The Eurographics Association, 2001)
      We present some ideas and demonstrations for a hybrid projectorbased rendering and display technique we call Computer Graphics Optique. Instead of partially overlapping projected images to achieve a wide-area display, we ...
    • Comprehensive Calibration and Registration Procedures for Augmented Reality 

      Fuhrmann, A.L.; Splechtna, R.; Prikryl, J. (The Eurographics Association, 2001)
      Augmented Reality - best described as adding computer-generated virtual content to the real environment needs more adjustments to work properly than immersive virtual environments. To be perceived as an augmentation of ...
    • Interactive Storytelling with Virtual Identities 

      Greeff, M.; Lalioti, V. (The Eurographics Association, 2001)
      Stories form an integral part of our lives. Interactive storytelling enables the participant to actively explore the story world. However, interactive storytelling has problems such as the problem of narrative flow, the ...
    • First-Person Science Inquiry in the Field 

      Moher, T.; Johnson, A.; Cho, Y.; Lin, Y. (The Eurographics Association, 2001)
      In this paper we describe a class of restricted simulations, virtual ambients, designed to support science inquiry learning among elementary school students. These simulations employ large multi-user VR displays to support ...
    • Using Exercise Cycle as a Haptic Input Device in a Virtual Environment 

      Välkkynen, Pasi; Heinilä, Juhani; Lainio, Sari; Lakaniemi, Sami; Väätänen, Antti (The Eurographics Association, 2001)
      Virku (Virtual Fitness Centre) is a study, in which an exercise cycle is used for navigating in a virtual environment. The cycle acts as a haptic bodily user interface between the user and the simulation. The simulation ...
    • Spelunking: Experiences using the DIVE System on CAVE-like Platforms 

      Steed, Anthony; Mortensen, Jesper; Frécon, Emmanuel (The Eurographics Association, 2001)
      The Distributed Interactive Virtual Environment (DIVE) system is a mature toolkit that has been used for prototyping many collaborative virtual environment (CVE) applications [3]. Until recently, support for immersive ...