정보처리학회논문지B (The KIPS Transactions:PartB)

한국정보처리학회 (Korea Information Processing Society)
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비쥬얼 가이더 : 몰입형 가상세계에서의 공간지각 보조도구

Visual Guider : Space Perception Aid Tool in Immersive Virtual World

  • 조은 (이화여자대학교 컴퓨터학과) ;
  • 박주영 (이화여자대학교 컴퓨터학과) ;
  • 김명희 (이화여자대학교 컴퓨터학과)
  • 발행 : 2005.02.01
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⟨ 이전 논문 다음 논문 ⟩

초록

몰입형 가상현실 시스템에서는 실제로 가상세계가 입체적으로 가시화된다 할지라도 현실에서와 같이 정확한 거리 및 깊이 단서가 제공되지 않기 때문에, 사용자가 가상객체들과 원활한 상호작용을 하는데 많은 불편함이 있다. 본 논문에서는 이 점을 개선하기 위하여 몰입형 가상세계에서 사용자가 효과적으로 시공간지각을 할 수 있도록 지원해 주는 Visual Guider를 제안한다. Visual Guider는 사용자가 가상객체들 간의 상대적 거리 정보를 신속하고 정확하게 파악할 수 있도록 이차원 윈도우 어플리케이션에서 활용되는 눈금자 개념을 도입하여 삼차원 가상공간상에 적용한 것이다. 본 논문에서는 제안 기법을 $CAVE^(TM)-like$ 시스템 상에서 구현된 실험용 가상공간 상에 적용하여 사용자의 위치 이동과 가상객체의 선택 및 조작에 활용한 결과를 보인다.

In immersive virtual reality system, since virtual worlds do not supply users with sufficient spatial information af real world does, the users frequently experience clumsiness and roughness while manipulating virtual objects. To overcome this problem, we propose Visual Guider in this paper as a tool for enhancing user's visual space perception in immersive virtual worlds. The Visual Guider aids users to recognize exocentric distances between different scene points and egocentric distances from the observation point to other points in the scene fast and precisely. Its concept is imported from the rectangular grids frequently used in two-dimensional windows applications. We applied the proposed technique to an experimental virtual space implemented in $CAVE^(TM)-like$ system and tested its effectiveness while users grasp and move virtual objects.

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참고문헌

  1. S. R. Ellis, and B. M. Menges, 'Judgments of the distance to nearby virtual objects: Interaction of viewing conditions and accormnodative demand,' Presence : Teleoperators and Virtual Environments, 6, pp. 452-460, 1997
  2. J. E. Cutting and P. M. Viston, 'Perceiving layout and knowing distance : The integration, relative potency, and contextual use of different information about depth,' In William Epstein and Sheena Rogers, editors, Perceptual of Space and Motion, Academic Press, New York, pp.69-117, 1995
  3. J. M. Loomis and J. M. Knapp, 'Visual perception of egocentric distance in real and virtual environments,' In L.J Hettinger and M. W. Haas(Eds), Virtual and Adaptive Environments. Hillsdale NJ: Erlbaum, in press
  4. H. H. Hu, A . A Gooch, W.B. Thompson and B.E. Smits, 'Visual Cues for Imminent Object Contact In Realistic Virtual Environments,' IEEE Proceedings of the Conference on Visualization 2000, pp.179- 185, 2000 https://doi.org/10.1109/VISUAL.2000.885692
  5. P. Willemsen, and A.A.Gooch, 'Perceived Egocentric Distances in Real, Image-Based, and traditional Virtual Environments', Proc. IEEE Virtual Reality, 2002 https://doi.org/10.1109/VR.2002.996536
  6. S. Yoshida, et al, 'A Technique for Precise Depth Representation in Stereoscopic Display,' Proceedings of Computer Graphics International, 1999 https://doi.org/10.1109/CGI.1999.777919
  7. K. Kakusho, J. Kitawaki, S. Hagihara and M. Minoh, 'Adjusting the Difference between 3D Spaces in VR Systems and Human Perception through Object Manipulation,' IEEE Proceedings of the Conference on Virtual Reality, pp.99-106, 2000 https://doi.org/10.1109/VR.2000.840487
  8. M. J. Sinai, W. K. Krebs, R.P. Darken, J.H. Rowland, and J.S. McCarley, 'Egocentric distance perception in a virtual environment using a perceptual matching task,' Human Factors and Ergonomics Society 43, pp.1256-1260, 1999 https://doi.org/10.1177/154193129904302219
  9. D. A Bowman, and L. F. Hodges, 'User Interface Constraints for Irmnersive Virtual Environment Applications,' Graphics, Visualization and Usability Center Technical Report, 1995
  10. S. Y. Lee, J. S. Seo, Gerard J. Kim, and C. M. Park, 'Evaluation of Pointing Techniques for Ray Casting Selection in Virtual Environments,' VRAI, 2002
  11. A. Forsberg, J. Herndon, and R. Zeleznik, 'Aperture based selection for immersive virtual environments,' Proceedings of the 9th annual ACM symposium on User interface software and technology, 1996
  12. I. P. Mark Billinghurst, and S. W Tadao Ichikawa, 'The Go-Go Interaction Technique: Non-linear Mapping for Direct Manipulation in VR,' ACM Symposium on User Interface Software and Technology, 1996 https://doi.org/10.1145/237091.237102
  13. M. R. Mine, F. P. Brooks Jr., and C. H. Sequin, 'Moving Objects in Space : Exploiting Proprioception in Virtual Environment Interaction,' Proceedings of SIGGRAPH97, 1997 https://doi.org/10.1145/258734.258747
  14. 이선민, 박성원, 박주영, 김명희, 'PC 기반 CAVE-like 시스템 구축 및 가상수수실 컨텐츠 개발 사례' HCI 학술대회논문집, 2003
  15. Trackd, (URL)http://www.vrco.com/products/trackd trackd.html
  16. CAVELib, (URL)http://www.siliconstudio.co.kr/products/vrco.htm