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On the Environment of the Virtual Real-Time Media via the Networks

Research Project

Project/Area Number 12680404
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報システム学(含情報図書館学)
Research InstitutionIbaraki University

Principal Investigator

YONEKURA Tatsuhiro  Ibaraki Univ., Engineering, Assoc. Professor, 工学部, 助教授 (70240372)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2001: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2000: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsreal-time interactive media / time lag / DVE / PFL / prediction / simulated lag / network / task performance / ネットワーク対話性
Research Abstract

In this research, the authors study on
1) the method of presenting visual and tactile information on the network environment with transmission lag,
2) the effect of the accommodation and the convergence for the stereo scope in the virtual environment,
3) the relationship between the real-time interaction and the lag on the network, and
4) the examples of interactive application of the prediction method against degradation caused by the lag.
In the item 1), the real-time interactive environment is considered by using visual and tactile display to develop the protocol based on tactile information prior to visual information since the former has the benefit in terms of transmission performance, and to confirm the advantages of the proposal.
Secondly in 2), through the experiment of the task performance, it is confirmed that the consistency between the convergence and the accommodation contributes to the performance, by using the HMD of which those two parameters is controllable.
In the item 3), the task performance of collaborative work between the remote users on the network with lag is examined, where the implementation of prediction of the remote user is evaluated. As a result, forty through fifty percent of performance improvement is confirmed even if the simplest prediction model is utilized.
Finally in 4), the authors try to apply the prediction based interaction scheme for the competitive context of the network users, namely the online racing game. The new type of prediction model is introduced to reduce the incompatibility and comfortless interaction, where each terminal, in collaboration, modifies the prediction model in every frame to reduce the gap of the distance between the predicted opposite avatar and the local avatar, in each terminal. Future works involve the analysis of this prediction model and the application for other context.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] 川原慎太郎, 米倉達広他2名: "HMDの焦点調節補償機能に着目した仮想スポーツにおける捕球タイミングの評価"日本VR学界論文誌. 5・3. 1033-1039 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Sumiya, T.Yonekura, Shiraishi: "Walking guide tactile interface for the visually impaired using plural self-calibrating sensors"VRSJ Proceedings of VSMM 2000. Vol.1. 561-568 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Kawahara, T.Yonekura et al.: "An evaluation of depth perception in a Virtual Space"SID Proceedings of International Display Workshops '00. Vol.1. 1123-1126 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] D.Hanawa, T.Yonekura: "A Basic Estimation of Predictive Feedback Loop (PFL) in a Distributed Virtual Environment (DVE) with Lag"IFIP Proceedings of Human-Computer Interaction INTERACT 2001. Vol.1. 696-697 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Kawahara, T.Sugihara, T.Miyasato, T.Yonekura: "Method for Evaluation of depth accuracy in a virtual space"Proceedings of SPIE International Conference on Stereosccpic Displays and Applications XIII. No.4660Aa(印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 川原 慎太郎: "仮想空間における視覚特性に関する研究"茨城大学大学院理工学研究科博士学位論文. 50 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Kawahara, T. Yonekura et. al: "An Evaluation of Virtual Sports, Focussing on the Accomodative Compensation"Trans. of VRSJ. Vol. 5, No. 3. 1033-1039 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. Sumiya, T. Yonekura, M. Shiraishi: "Walking guide tactile interface for the visually impaired using plural self-calibrating sensors"VRSJ Proceedings of VSMM 2000. Vol. 1. 561-568 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Kawahara, T. Yonekura, et. al: "An evaluation of depth perception in a Virtual Space"SID Proceedings of International Display Workshops '00. Vol. 1. 1123-1126 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] D. Hanawa, T. Yonekura: "A Basic Estimation of Predictive Feedback Loop (PFL) in a Distributed Virtual Environment (DVE) with Lag"IFIP Proceedings of Human-Computer Interaction INTERACT 2001. Vol. 1. 696-697 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Kawahara, T. Sugihara, T. Miyasato, T. Yonekura: "Method for Evaluation of depth accuracy in a virtual space"Proceedings of SPIE International Conference on Stereoscopic Displays and Applications XIII. Vol. 1 No. 4660A, (in press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shintaro Kawahara: "On Characteristics of the Human Vision in a Virtual Space"Ph. D Thesis, Graduate School of Science & Engineering, Ibaraki Univ.. 50 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 川原 慎太郎: "HMDの焦点調節補償機能に着目した仮想スポーツにおける捕球タイミングの評価"日本VR学会論文誌. 5・3. 1033-1039 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideyasu Sumiya: "Walking guide tactile interface for the visually impaired using plural self-calibrating sensors"VRSJ Proceedings of VSMM 2000. vol.1. 561-568 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shintaro Kawahara: "An evaluation of depth perception in a Virtual Space"SID Proceedings of International Display Workshops'00. vol.1. 1123-1126 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Dai Hanawa: "A Basic Estimation of Predictive Feedback Loop (PFL) in a Distributed Vitual Environment (DVE) with Lag"IFIP Proceedings of Human-Computer Interaction INTERACT 2001. vol.1. 696-697 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shintaro Kawahara: "Method for Evaluation of depth accuracy in a virtual space"Proceedings of SPIE International Conference on Stereoscopic Displays and Applications XIII. No.4660A(印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 川原 慎太郎: "仮想空間における視覚特性に関する研究"茨城大学大学院理工学研究科博士学位論文. 50 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 立木学: "視覚提示と力覚提示の時間的ずれによる操作性への影響"電子情報通信学会2001年総合大会論文集. A-16・56(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 塙大: "遅延を有する分散仮想環境におけるPFL(Predictive Feedback Loop) の提案"電子情報通信学会2001年総合大学論文集. A-16・57(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 笹本綾子: "遅延を予測したリアルタイムネットワーク対戦ゲームの試作"電子情報通信学会2001年総合大学論文集. A-16・29(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 川原慎太郎: "HMDの焦点調節補償機能に着目した仮想スポーツにおける捕球タイミングの評価"日本VR学会論文誌. 5・3. 1033-1039 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 川原慎太郎: "An evaluation of depth perception in a Virtual Space"SID Proc.International Display Workshops 2000. 2000. 1123-1126 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 川原慎太郎: "仮想空間における視覚特性に関する研究"茨城大学大学院理工学研究科博士学位論文. 50 (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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