• Journal of Broadcast Engineering
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• v.22 no.6
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• pp.817-828
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• 2017

In this paper, we propose an efficient stabilization algorithm for 360 VR sequence, where the geometric information and the relationship between various projection formats have been utilized. The proposed scheme consists of '1st stitching', 'extraction of wide angle picture from VR data', 'stabilization', and '2nd stitching'. The simulation results show that the proposed method outperforms the conventional algorithms in the viewpoint of image quality for end-user.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.613-618
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• 2006

테마파크는 현대 사회와 복잡함 속에서의 현실 탈피와 참여로써 자기 성취를 구현하는 현대적 개념의 종합위락시설로 모든 계층의 사람들이 즐길 수 있는 창조적 유희공원의 일반적 특징을 갖고 있다. 테마파크를 공간, 주제, 유형에 의해 분류해 볼 때 산업적 성공 가능성이 많은 것으로는 공간-실내, 주제-캐릭터, 유형-쇼핑으로 현재 일본의 산리오 퓨로랜드나 국내 일산의 헤이리 딸기파크가 그 사례이다. 본 연구에서는 실내캐릭터쇼핑파크의 사용자 분석을 통하여 온 오프라인 체험 컨텐츠의 가능성을 발견하고, 이를 VR 시뮬레이션 시나리오로 제안하였다. 방법으로는 헤이리 딸기파크에서 5 그룹, 9 개 구역을 필드리서치 하여 체험 시나리오 개발을 위한 의미 있는 단서를 발견하였으며, 이를 토대로 시나리오 기법을 활용하여 7 구역 14 개 시안을 도출하였다. 최종 구체적 사례로 포토포인트 시나리오를 설정하여 오프라인 연계 VR 시나리오를 이용한 구축 사례를 통해 제시하였다. 컨텐츠 개발의 제안을 중심으로 연구 범위를 디자인 사례의 제안으로 제한하였으며, 이는 향후 온 오프라인 연계 테마파크의 구체적 컨텐츠 개발의 활용을 목적으로 디자인되었고, 공간의 실제적 검증을 위한 Web-VR 시뮬레이션 기법의 검토에 도움을 줄 것으로 판단된다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2007.11a
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• pp.387-392
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• 2007

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.861-863
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• 2013

• Proceedings of the KSR Conference
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• 2006.11a
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• pp.135-144
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• 2006

To investigate various running performances of the magnetic levitation train systematically, the performance evaluation system based on Modeling & Simulation(M&S) technology is demanded essentially When the VR(virtual reality) techniques are involved, we can not only evaluate the M&S results more effectively and realistically, but also make optimum engineering decision. At the viewpoint of visualization of core engineering data like the train's running performance, there are no many cases of study which provide optimum decision information with the maximized reality and immersion environments through computer user interactions. In this study, the running performance simulation system which provides the VR based 3-dimensional visual information from the M&S results is being developed.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2000.11a
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• pp.212-216
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• 2000

어떤 특정한 환경과 상황을 가상적으로 모의함으로써 그 환경에 있는 사람이 마치 실제적인 환경 또는 상황과 상호 작용을 하고 있는 것처럼 만들어 주는 진보된 기술을 가상현실(virtual reality) 이라고 한다. 가상현실을 실현하기 위해서는 주변의 영상, 음향, 운동감, 열환경, 후각환경 등이 실제처럼 제시되어야 한다. 본 연구에서는 이중 후각환경의 제시를 위하여 급기 및 배기 위치에 따른 향 농도의 분포를 수치해석적으로 예측한다. 수치해석 결과는 VR 영상관의 향 배기 시스템의 설계 자료로 활용된다.

• International Journal of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.149-159
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• 2023

The Republic of Korea (ROK) Army is developing the Army Synthetic Battlefield Training System and plans divisional-level Live, Virtual, and Constructive (LVC) integrated training. This study proposes a plan to apply VR/AR/MR (Virtual Reality/Augmented Reality/Mixed Reality) technology to LVC integrated training systems to enhance the efficiency and effectiveness of future LVC integrated training. The study investigated immersive military training systems in the ROK and advanced countries. As a result, we confirm that immersive technology can significantly improve the efficiency and effectiveness of military training. Accordingly, we review the key technologies required for building a defense training system with immersive features and propose training subjects that can be enhanced in effectiveness and efficiency when built with an immersive approach. We also propose a plan to apply immersive technology to the Live, Virtual, and Constructive systems for the development of future LVC integrated training system.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.5
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• pp.162-170
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• 2004

In these days, a vehicle simulator is developed by using a VR(Virtual Reality) system. A VR system must provide a vehicle simulator with a natural interaction, a sufficient immersion and realistic images. To achieve this, it is important to provide a fast and uniform rendering performance regardless of the complexity of virtual worlds or the level of simulation. In this paper, modeling methods which offer an improved rendering performance for complex VR applications as 3D road model have been implemented and verified. The key idea of the methods is to reduce a load of VR system by means of LOD(Level of Detail), alpha blending texture mapping, texture mip-mapping and bilboard. Hence, in 3D road model where a simulation is complex or a scene is very large, the methods can provide uniform and acceptable frame rates. The VR system which is constructed with the methods has been experimented under the various application environments. It is confirmed that the proposed methods are effective and adequate to the VR system which associates with a vehicle simulator.

• Fire Science and Engineering
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• v.32 no.1
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• pp.108-115
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• 2018

The purpose of this study was to classify VR programs according to their characteristics and associations by the disaster management phase and firefighting school curriculum, and set priorities among VR fire training and training programs using AHP analysis., The relative priority is given considering its importance and urgency. As a result of the study, firefighting education and training classes showed the highest level of response. The relative priority of the subcategories was highest in the prevention stage. The simulation implementation for the evacuation experience was highest in closed spaces, such as a subway, and the simulation for the special firefighting vehicle was highest in the contrast phase. In the response phase, real fire simulation training was the highest. In the recovery phase, virtual reality training was the most effective in determining the fire situation based on the fire database.

• The Journal of the Korea Contents Association
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• v.21 no.1
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• pp.434-445
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• 2021

With the development of realistic content technology and related infrastructure, interest in the use of virtual reality content is growing. Accordingly, in the field of safety education, more and more cases of producing virtual reality-based safety education (VR safety education) contents such as experiencing disaster situations realistically by supplementing the shortcomings of existing lecture-style education. This study looked at the characteristics and effects of VR safety education compared to the existing safety education, and analyzed 104 VR safety education contents produced and disclosed to date into nine classifications based on content and form. Based on the degree of relevance between items and the two axes of 'interactionability' and 'vividness of the environment', VR safety education contents could be categorized into three types: tangible lecture type, simulation type, and game type. Through this study, we hope to contribute to the planning and production of quality VR safety education contents by considering the purpose of safety education and the characteristics of types with the expected effects.