O. G. Staadt

Publications (3)0 Total impact

• Source

  Available from: msstate.edu

  Conference Proceeding: Measurement Protocols for Medium-Field Distance Perception in Large-Screen Immersive Displays

  E. Klein, J.E. Swan, G.S. Schmidt, M.A. Livingston, O.G. Staadt
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  ABSTRACT: How do users of virtual environments perceive virtual space? Many experiments have explored this question, but most of these have used head-mounted immersive displays. This paper reports an experiment that studied large-screen immersive displays at medium-field distances of 2 to 15 meters. The experiment measured ego-centric depth judgments in a CAVE, a tiled display wall, and a real-world outdoor field as a control condition. We carefully modeled the outdoor field to make the three environments as similar as possible. Measuring egocentric depth judgments in large-screen immersive displays requires adapting new measurement protocols; the experiment used timed imagined walking, verbal estimation, and triangulated blind walking. We found that depth judgments from timed imagined walking and verbal estimation were very similar in all three environments. However, triangulated blind walking was accurate only in the out-door field; in the large-screen immersive displays it showed under-estimation effects that were likely caused by insufficient physical space to perform the technique. These results suggest using timed imagined walking as a primary protocol for assessing depth perception in large-screen immersive displays. We also found that depth judgments in the CAVE were more accurate than in the tiled display wall, which suggests that the peripheral scenery offered by the CAVE is helpful when perceiving virtual space.
  Virtual Reality Conference, 2009. VR 2009. IEEE; 04/2009
• Source

  Available from: computer.org

  Conference Proceeding: PC Clusters for Virtual Reality

  B. Raffin, L. Soares, Tao Ni, R. Ball, G.S. Schmidt, M.A. Livingston, O.G. Staadt, R. May
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  ABSTRACT: In the late 90’s the emergence of high performance 3D commodity graphics cards opened the way to use PC clusters for high performance Virtual Reality (VR) applications. Today PC clusters are broadly used to drive multi projector immersive environments. In this paper, we survey the different approaches that have been developed to use PC clusters for VR applications. We review the most common software tools that enable to take advantage of the power of clusters. We also discuss some new trends.
  Virtual Reality Conference, 2006; 04/2006
• Source

  Available from: dtic.mil

  Article: A Survey of Large High-Resolution Display Technologies, Techniques, and Applications

  T. Ni, G. S. Schmidt, O. G. Staadt, M. A. Livingston, R. Ball, R. May
  Virtual Reality. 01/2006;