• Title, Summary, Keyword: virtual environment

Search Result 2,159, Processing Time 0.056 seconds

Constructing Virtual Environment for Flight Simulators based on Digital Map (지리정보를 이용한 비행 시뮬레이터의 가상환경 구축)

  • 유병헌;한순흥
    • Korean Journal of Computational Design and Engineering
    • /
    • v.9 no.2
    • /
    • pp.148-157
    • /
    • 2004
  • Interactive simulators that simulate mechanical systems are being developed for the purpose of performance evaluation of product design, replacement of physical training, and entertainment game. Use of flight simulator is increasing to reduce risk and cost of physical training, and we need virtual environment which covers large area terrain. We need a method that can reduce development cost and construction time of virtual environment that simulate the real environment. There have been attempts to link GIS or remote sensing field with virtual reality. This paper examines a method that helps to construct virtual environment, and attempts to link geographic information with virtual reality. A construction method of virtual environment based on digital map and satellite image has been studied.

Interactive Virtual Studio & Immersive Viewer Environment (인터렉티브 가상 스튜디오와 몰입형 시청자 환경)

  • 김래현;박문호;고희동;변혜란
    • Proceedings of the Korean Society of Broadcast Engineers Conference
    • /
    • /
    • pp.87-93
    • /
    • 1999
  • In this paper, we introduce a novel virtual studio environment where a broadcaster in the virtual set interacts with tele-viewers as if they are sharing the same environment as participants. A tele-viewer participates physically in the virtual studio environment by a dummy-head equipped with video "eyes" and microphone "ears" physically located in the studio. The dummy head as a surrogate of the tole-viewer follows the tele-viewer's head movements and views and hears through the dummy head like a tele-operated robot. By introducing the tele-presence technology in the virtual studio setting, the broadcaster can not only interact with the virtual set elements like the regular virtual studio environment but also share the physical studio with the surrogates of the tele-viewers as participants. The tele-viewer may see the real broadcaster in the virtual set environment and other participants as avatars in place of their respective dummy heads. With an immersive display like HMD, the tele-viewer may look around the studio and interact with other avatars. The new interactive virtual studio with the immersive viewer environment may be applied to immersive tele-conferencing, tele-teaching, and interactive TV program productions.program productions.

  • PDF

Design of Application Sharing System for Collaborative Works in 3D Virtual Environment supporting Multi-Participants (다중 참여자를 지원하는 3차원 가상환경에서 공동작업을 위한 어플리케이션 공유 시스템 설계)

  • Tak, Jin-Hyun;Lee, Sei-Hoon;Wang, Chang-Jong
    • The Transactions of the Korea Information Processing Society
    • /
    • v.7 no.2
    • /
    • pp.355-364
    • /
    • 2000
  • Application sharing for collaborative works make multiple participants to be capable of collaborative developments through sharing development tools and applications which is distributed to various system without spatial restriction. However, applying legacy application sharing to CSCW based virtual environment has a problem because it dont consider 3D space and it disturbs the harmonic interaction of participants. In this study, we designed application sharing system for collaborative works in 3D virtual environment to share application effectively on collaborative virtual environment. The designed application sharing system for collaborative works in 3D virtual environment consist of application sharing manager, group manager and communication manager. This system is able to perceive event of 3D space about application of participant on 3D virtual environment by agent which moves to participant sites and get an ordered events and conflict among participants through scheduling. Therefore, designed application sharing system for collaborative work in 3D virtual environment can support efficient collaborative works and improve reusability of legacy application through using easily legacy application in 3D virtual environment when CSCW application development for virtual environments.

  • PDF

A New Mavigation Method in Virtual Environment

  • Koo, Eun-Young;Kon, Tae-Wook;Choy, Yoon-Chul
    • Proceedings of the Korean Information Science Society Conference
    • /
    • /
    • pp.643-645
    • /
    • 2000
  • This paper puts emphasis on navigation in virtual environment, which is one of the major interfaces for the interactivity between human and virtual environment in virtual reality circumstances and worlds. It proposes a new navigation method: 2d Map-Based navigation, which prevents user's spatial lost in 3D Virtual Environment. The 2D Map-Based Navigation is composed of three major processes, Constant Velocity Navigation, Collision Detection and Avoidance, and Path Adjustment. The 2D Map-Based Navigation can reduce user's difficulties and improve user's sense of presence and reality in the virtual environments. The experiment study proved that the 2D Map-Based Navigation is a very natural, straightforward and useful navigation interface in the virtual environment.

  • PDF

The Design and Implementation of Virtual Studio

  • Sul, Chang-Whan;Wohn, Kwang-Yoen
    • Proceedings of the Korean Society of Broadcast Engineers Conference
    • /
    • /
    • pp.83-87
    • /
    • 1996
  • A virtual reality system using video image is designed and implemented. A participant having 2{{{{ { 1} over { 2} }}}}DOF can interact with the computer-generated virtual object using her/his full body posture and gesture in the 3D virtual environment. The system extracts the necessary participant-related information by video-based sensing, and simulates the realistic interaction such as collision detection in the virtual environment. The resulting scene obtained by compositing video image of the participant and virtual environment is updated in near real time.

  • PDF

Modeling of Indoor Geometry and Environment Sensor for Responsive Virtual URS Service (반응형 가상 URS 서비스를 위한 실내 기하구조 및 환경 센서 모델링)

  • Jeon, Kyeong-Won;Ki, Jeong-Seok;Kwon, Yong-Moo
    • The Journal of Korea Robotics Society
    • /
    • v.3 no.2
    • /
    • pp.112-116
    • /
    • 2008
  • This paper presents URS (Ubiquitous Robotic Space) Modeling and service technique for the robotic security service while bridging between virtual space and physical space. First, this paper introduces a concept of virtual URS and responsive virtual URS. Second, this paper addresses modeling of URS which covers modeling of indoor geometry and environment sensor. Third, this paper describes virtual URS services including interactive virual-physical bridging service.

  • PDF

Multimodal Interface Control Module for Immersive Virtual Education (몰입형 가상교육을 위한 멀티모달 인터페이스 제어모듈)

  • Lee, Jaehyub;Im, SungMin
    • The Journal of Korean Institute for Practical Engineering Education
    • /
    • v.5 no.1
    • /
    • pp.40-44
    • /
    • 2013
  • This paper suggests a multimodal interface control module which allows a student to naturally interact with educational contents in virtual environment. The suggested module recognizes a user's motion when he/she interacts with virtual environment and then conveys the user's motion to the virtual environment via wireless communication. Futhermore, a haptic actuator is incorporated into the proposed module in order to create haptic information. Due to the proposed module, a user can haptically sense the virtual object as if the virtual object is exists in real world.

  • PDF

Construction of Virtual Environment for a Vehicle Simulator (자동차 시뮬레이터의 가상환경 구성에 대한 연구)

  • Chang, Chea-Won;Son, Kwon;Choi, Kyung-Hyun
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.8 no.4
    • /
    • pp.158-168
    • /
    • 2000
  • Vehicle driving simulators can provide engineers with benefits on the development and modification of vehicle models. One of the most important factors to realistic simulations is the fidelity given by a motion system and a real-time visual image generation system. Virtual reality technology has been widely used to achieve high fidelity. In this paper the virtual environment including a visual system like a head-mounted display is developed for a vehicle driving simulator system by employing the virtual reality technique. virtual vehicle and environment models are constructed using the object-oriented analysis and design approach. Accordint to the object model a three dimensional graphic model is developed with CAD tools such as Rhino and Pro/E. For the real-time image generation the optimized IRIS Performer 3D graphics library is embedded with the multi-thread methodology. Compared with the single loop apprach the proposed methodology yields an acceptable image generation speed 20 frames/sec for the simulator.

  • PDF

A Study on the Measurement Method of Spatial Position Compensation for Virtual Reality and Real Space Synchronization (가상현실과 실공간 동기화를 위한 공간 위치보정 측정 방법론에 대한 연구)

  • Park, Kee-Jin;Lee, Byoung-Hwak;Kim, Nam-Hyuk;Yoon, Sung-Ho
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.17 no.6
    • /
    • pp.136-143
    • /
    • 2018
  • Recently, with the rapid development of virtual reality technology, there have been more and more applications of virtual reality technology in various fields. In order to realize a virtual reality, a method of implementing a visualization environment through an HMD (Head Mounted Display) is widely used. However, in the current visualization environment through the HMD, the user feels dizziness when worn, It has the disadvantage of imposing restrictions on. In this study, it is aimed to realize virtual reality visualization environment through multi-screen environment which improves the experience effect of virtual environment by using existing screen instead of visualization through HMD, and compensates for shortcomings of HMD method. In order to realize a multi-screen environment as a highly visualized environment, a technique for matching the spatial position of the multi-screen with the spatial position of the virtual environment is required. To do this, we need an efficient method to precisely measure the position of the space, and we propose a spatial position compensation methodology that can efficiently and precisely measure the position of the real space and reflect it in the virtual environment.

The Tactile Illusion evoked by a synchronous Visual Stimulus on Virtual and Real Hand (가상과 실제 손의 동기화를 통한 촉각환상 유발연구)

  • Jeonghun Ku;Kim, Hosung;Kim, Kwanguk;Wonyoung Hahn;Lee, Jang-Han;Kim, Sun I.
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
    • /
    • /
    • pp.84-89
    • /
    • 2003
  • The virtual reality(VR) technology can provide various stimuli, including, visual and auditory stimuli, simultaneously in the virtual environment and encourage the user to interact. Virtual reality is a set of computer technologies, which when combined, provide an interactive interface to a computer generated world. In this world the subject can see, hear and navigate in a dynamically changing environment in which he participates as an active player, by modifying the environment according to his will. Moreover, the subject can get a feeling for the virtual environment in much the same way as one feels real life situations. In the real world, a plethora of information from various modalities may be in conflict, and modulate each other to form an illusion. In this study we investigated whether a tactile illusion on a real hand could be evoked by a virtual stimulus, the time required to generate this illusion and its duration. This study shows that the illusion occurred, and that was correlated with presence score in the virtual environment.

  • PDF