• ETRI Journal
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• 제29권3호
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• pp.305-310
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• 2007

If a virtual object in a virtual environment represented by a stereo vision system could be touched by a user with some tactile feeling on his/her fingertip, the sense of reality would be heightened. To create a visual impression as if the user were directly pointing to a desired point on a virtual object with his/her own finger, we need to align virtual space coordinates and physical space coordinates. Also, if there is no tactile feeling when the user touches a virtual object, the virtual object would seem to be a ghost. Therefore, a haptic interface device is required to give some tactile sensation to the user. We have constructed such a human-computer interaction system in the form of a simple virtual reality game using a stereo vision system, a vibro-tactile device module, and two position/orientation sensors.

• 유통과학연구
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• 제17권2호
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• pp.101-107
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• 2019

Purpose - The purpose of this study is to analyze the user requirements and developer requirements in virtual reality(VR), and suggest ways to increase the satisfaction of users who experience virtual reality. Specifically, focused on experience store of VR as a distribution retailer, user requirements were analyzed according to the results of previous research that the characteristics of Affordance, Presence, and Head Mounted Display (HMD) affect user satisfaction. Research, design, data, and methodology - Based on previous studies, in this study, we analyzed the importance of immerse, interaction, perception, and presence for the satisfaction of the user through the questionnaire, and the user experiences virtual reality (VR) The importance of HMD, Presence, Affordance, and experience satisfaction were analyzed. Based on this, we analyzed the user requirements and the developer requirements based on the questionnaires and interviews of the experts, starting from the user's desire or preference using QFD technique. Results - As a result of the analysis, the development factors that occupied a big part in the virtual reality field appeared to be visual. In detail, this showed that there was a lack of sense of presence for users. This should be improved. This paper shows that the requirements for visual, auditory, and tactile development are necessary. For the satisfaction of the users of virtual reality (VR) users, it is necessary to develop them according to their priority in consideration of importance and difficulty in the future. Conclusions - In this study, it was suggested that development according to priority should be considered, considering the difficulty level. Based on the results of this study, the following suggestions are made. First, we tried to search the list of user requirements as much as possible, but it is likely to change due to the development of VR technology. Therefore, it is necessary for developers to continually supplement user requirements with recent research literature. Second, development priorities according to difficulty level should be considered. This aspect should be considered in the actual VR development process, so if the numerical value of the difficulty is calculated, it should be presented in the research.

• 한국위성정보통신학회논문지
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• 제11권4호
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• pp.33-38
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• 2016

전 세계적으로 통신체계 및 무선기기사용이 활성화됨에 따라 2.4GHz의 동일 대역을 사용하는 기기간의 간섭현상이 발생하게 되었다. 최근 기존의 전통 산업에 가상현실 기술을 접목한 신규 융합 콘텐츠 기술 발전으로, 교육, 전시, 방송, 테마파크 등 다양한 분야의 적용이 가능하며 연 평균 14% 이상의 성장률을 예상하고 있다. 가상현실 기기의 경우 부가적으로 모션센서나 무선 조이스틱을 이용하며 블루투스 통신을 이용하는 것으로 나타난다. 이에 따라 가상현실 기기에 사용되는 무선기기들과 현재 상용화된 와이파이 기반의 무선랜 사이의 간섭영향을 분석하였다. 간섭영향을 분석하기 위해 간섭시나리오와 확장된 하타 전파모델을 설정하였다. 몬테카를로 기반의 시뮬레이션을 수행하여 무선랜을 통하여 와이파이통신을 할 경우의 발생하는 간섭확률에 대해 분석하고, 가상현실 기기와 무선랜이 공존할 때 허용 가능한 가상현실 기기의 개수를 도출하였다.

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 1999년도 춘계공동학술대회: 지식경영과 지식공학
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• pp.361-371
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• 1999

This paper is concerned with designing and implementing the Internet shopping mall by using virtual reality-driven avatar and web decision support system. Traditionally, the Internet shopping mall has been designed based on the combination of several hyperlinks, images, and tents. However, this sort of approach results in a lower performance because possible customers cannot make more accurate shopping decisions. To overcome this kind of pitfalls facing the current Internet shopping malls, we propose using a combination of virtual reality and web DSS. The main virtues of our proposed approach to designing the Internet shopping mall are as follows: First, the virtual reality technique is emerging as one of alternatives guaranteeing a sense of reality for customers' part and facilitating the complex process of shopping decision makings. Especially, the avatar, which is an artificially designed man working on the Internet, can make easy and absorbing the Internet shopping-related decision making processes. Second, the web DSS approach can provide an effective decision support mechanism for customers. Especially, we design a set of intelligent agents for the proposed web DSS. Experimental results with an illustrative example showed that our proposed approach can yield a new Internet shopping mall paradigm with which customers can benefit from a high level of decision support functions.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 1999년도 춘계공동학술대회-지식경영과 지식공학
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• pp.361-371
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• 1999

This paper is concerned with designing and implementing the Internet shopping mall by using virtual reality-driven avatar and web decision support system. Traditionally, the Internet shopping mall has been designed based on the combination of several hyperlinks, images, and texts. However, this sort of approach results in a lower performance because possible customers cannot make more accurate shopping decisions. To overcome this kind of pitfalls facing the current Internet shopping malls, we propose using a combination of virtual reality and web DSS. The main virtues of our proposed approach to designing the Internet shopping mall are as follows: First, the virtual reality technique is emerging as one of alternative guaranteeing a sense of reality for customers part and facilitating the complex process of shopping decision makings. Especially, the avatar, which is an artificially designed man working on the Internet, can make easy and absorbing the Internet shopping-related decision making processes. Second, the web DSS approach can provide an effective decision support mechanism for customers. Especially, we design a set of intelligent agents for the proposed web DSS. Experimental results with an illustrative example showed that our proposed approach can yield a new Internet shopping mall paradigm with which customers can benefit from a high level of decision support functions.

• 실천공학교육논문지
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• 제15권2호
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• pp.467-474
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• 2023

안전 불감증으로 인해 많은 인재가 발생하고 있는 우리나라 상황에서는 재난이 발생했을 때 대응할 수 있는 재난 안전교육이 매우 중요하다. 최근 가상현실 디바이스 및 제작 기술이 발전하며, 안전교육 분야에서 가상현실 기술을 접목한 훈련시스템 활용의 가능성이 주목받고 있다. 가상훈련시스템은 몰입감이 뛰어나고 시공간의 제약없이 다양한 재난상황을 체험할 수 있어 훈련 및 교육에 매우 효과적이다. 본 연구에서는 우리나라 재난 안전 가상훈련 콘텐츠 사례들을 수집 조사하여 국내 재난안전 가상훈련 콘텐츠의 현황을 파악하고 분석하여 문제점을 도출하고 이에 대한 개선방안을 제안한다.

• 토지주택연구
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• 제11권3호
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• pp.93-101
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• 2020

Recently, as a BIM-based construction simulation system, 4D CAD tools using virtual reality (VR) objects are being applied in construction project. In such a system, since the expression of the object is based on VR image, it has a sense of separation from the real environment, thus limiting the use of field engineers. For this reason, there are increasing cases of applying augmented reality (AR) technology to reduce the sense of separation from the field and express realistic VR objects. This study attempts to develop a methodology and BIM module for the pre-construction verification system using AR technology to increase the practical utility of VR-based BIM objects. To this end, authors develop an AR-based drawing verification function and drawing object-based 4D model augmentation function that can increase the practical utility of 2D drawings, and verify the applicability of the system by performing case analysis. Since VR object-based image has a problem of low realism to field engineers, the linking technology between AR object and 4D model is expected to contribute to the expansion of the use of 4D CADsystem in the construction project.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.231-236
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• 2001

Virtual Reality (VR) is a new technology that enables humans to communicate with a computer, It allows the user to see, hear, fuel and interact in a three-dimensional virtual world created graphically. Virtual Reality Therapy (VRT), based on this sophisticated technology, has been recently used in the treatment of subjects diagnosed with acrophobia. Acrophobia is a disorder that is characterized by marked anxiety upon exposure to heights, avoidance of heights, and a resulting impairment in functioning. Conventional virtual reality systems for the treatment of acrophobia have limitations, such as overly expensive devices or somewhat unrealistic graphic scenes. The goal of this study is to develop an inexpensive and more realistic virtual environment in which to perform an exposure therapy fur acrophobia. It runs on a personal computer, and a virtual scene ova bunge-jump tower in the middle of a large city. The virtual scenario includes an open tin surrounded by props beside a tower, which allows the patient to feel a sense of heights. The effectiveness of the VR environment was evaluated through the clinical treatment of a subject who was suffering from the fear of heights. Based on pre- and post- questionnaires and subjective comments from the subject. This virtual reality environment proved to be an effective and realistic tool fur the treatment of acrophobia.

• 한국멀티미디어학회논문지
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• 제3권3호
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• pp.224-233
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• 2000

본 논문은 인간과 VR환경과의 상호작용을 지원하는 중요한 요소 중 하나인 이동의 문제점 및 해 결 방법에 대하여 연구하였다. 이 논문에서 제시된 Intelligent Cruise-Control Navigation (ICCN)은 다중 사용자 환경의 가상공간을 이동할 때, 실세계와 유사한 이동방법을 제공하여 사용자로 하여금 가상공간에 대한 현장감 및 현실감의 제고에 초점을 두었다. ICCN은 사용자들이 가상공간에서 이동시 부가적인 입력이 없이도 일정한 속도로 이동을 지원하는 Constant Velocity Navigation, 이동 중 장애물 및 다른 사용자(아바타)와의 충돌현상을 감지 및 회피하는 Collision Detection and Avoidance, 그리고 충돌회피후 기존 방향으로의 계속된 이동을 지원하는 Path Adjustment등의 기능을 제공한다. ICCN은 사용자의 부가적인 노력의 감소 및 병행작업을 보장, 현실과 유사한 사용자 중심의 navigation 기 법 을 제공, 가상공간과 현실과의 괴리를 줄임으로써 가상현실이 추구하는 현실감 및 현장감을 높일 수 있도록 하였다. 실험을 통하여 본 연구에서 제안한 ICCN이 사용자중심의 매우 자연스럽고, 쉽고 편리한 가상공간 navigation 인터페이스라는 평가를 얻었다.

• International journal of advanced smart convergence
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• 제11권2호
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• pp.71-76
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• 2022

The continuous development of virtual reality technology in the last five years has brought about a big change in the future film industry. Interactive VR movies using virtual reality technology in movies showed the result of increasing the immersion of the audience due to the characteristics of interaction. This will provide a unique opportunity for a new experience of immersion in various forms of cinema in the near future. In this paper, the interaction of narrative VR movies was studied as an example of the movie , which won the [The Best VR Experience Award] at the Venice International Film Festival, In future development, improve the scene transition, Dizziness, Ways of interaction and other questions, let the audience increase the sense of participation, immersion and curiosity when watching movies, and make watching movies a more interesting thing in life.