• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.224-225
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• 2019

Virtual reality technology can be defined as human-computer interface that makes virtual place of specific environments or situation is an interactive computer-generated experience taking place within a simulated environment. In order to combine virtual reality technology of domestic nuclear power industry, the R&D Project has been developing a virtual/augment reality system for nuclear power plant from April 2018 to March 2021. To effectively apply virtual reality technology of domestic nuclear industry, it is necessary to build virtual space similar to real environment. Therefore, This study is analysed 3d model status for nuclear power plant during the life-cycle, and suggested a method to build 3D cad model close to real environment.

• 한국멀티미디어학회논문지
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• 제25권8호
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• pp.1175-1187
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• 2022

3D interaction between humans and computers has been possible with the popularization of virtual reality, and it is important to study natural and efficient virtual reality user interfaces. In user interface development, it is essential to analyze and evaluate user factors. In order to analyze the influence of factors on users who use the virtual reality color picker, this paper divides the user groups based on whether they major in art or design, whether they have experience in virtual reality, and whether they have prior knowledge about 3D color space. The color selection error and color selection time of all user groups were compared and analyzed. Although there were statistically significant differences according to the user groups, all user groups used the virtual reality color picker accurately and effectively without any difficulties.

• 디지털산업정보학회논문지
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• 제4권1호
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• pp.65-68
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• 2008

In this paper, a web-based 3D virtual reality (VR) pavillion of Korean Traditional Music was implemented. The VR pavillion is used for the virtual demonstration and experience of Korean Traditional Music, which provides the information as well as multimedia experience on eight instruments to users through internet. It provides eight web-pages and one an audio-visual classroom on the instruments.

• 산업공학
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• 제18권1호
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• pp.82-87
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• 2005

Most of virtual reality systems ask users to control 3D objects or to navigate 3D world using 3D controllers. To maximize the human performance in the control, the design of virtual reality system and its input and output devices should be optimized. In this study, an experiment was designed to investigate the effects of three resolution factors of a virtual reality system on the human performance. Six subjects conducted the experiment for the factors; two frame rates, three spatial resolutions, and three pictorial contents. The result showed that the greater the spatial resolution was, the higher the human performance was. For the temporal resolution, fixed frame rate at 18 Hz was better than the varied maximized frame rate. For the pictorial contents, the virtual space with orientation cues marked the greatest performance than the other two conditions; the virtual space without any orientation cue and the virtual space like real world. These results could be applied for the design of virtual reality systems.

• International Journal of Internet, Broadcasting and Communication
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• 제8권2호
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• pp.31-37
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• 2016

History documentaries in Korea have developed various forms of production techniques to overcome the limits of insufficient historical records and videos, and dramatic elements that make the viewers immersed. Through diverse production techniques, history documentaries can maximize the factuality, vividness, and informativeness, allowing the viewers to understand and share the historical events. This paper analyzed the "immersion and experience" techniques of the programs that have been the main turning points of the history documentary so far and produced and realized the virtual reality through utilizing "Uigwe", a 3D history documentary broadcasted on KBS which showed the possibility of applying the virtual reality technique as a new broadcasting contents format.

• 전자공학회논문지
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• 제54권1호
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• pp.165-170
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• 2017

웹 3D 기술은 과학, 의료, 공학 그리고 멀티미디어 가시화의 경험을 시뮬레이션하기 위해 사용될 수 있다. 웹 환경에서 3D 가상현실은 운영체제 등에 관계없이 사용될 수 있으며, 가상현실은 3차원 컴퓨터에 의해 생성된 현실적인 영상, 음향과 다른 감각을 표현하고 사람들과의 사용작용을 원활하게 하기 위해 사용될 수 있다. 특히 가상현실에 참여하는 사람들은 몰임하여 객체를 조작할 수도 있고, 원하는 목표를 위해 단계별 행동을 실행할 수 있다. 일반적으로 웹 환경에서 3D 상호작용 콘텐츠를 정의한 ISO 국제표준인 X3D를 이용하여 가상현실 공간을 생성한다. 본 논문에서는 X3D 가상현실 공간에서 스테레오 렌더링을 논의하고, HMD VR을 위한 새로운 X3D 노드를 제안한다. 제안한 노드들은 X3D 웹 브라우저인 X3DOM에 의해 가시화되었다.

• 한국멀티미디어학회논문지
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• 제24권11호
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• pp.1560-1566
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• 2021

Cyber Sickness, which occurs when using Virtual Reality contents, is the most serious problem in immersive Virtual Reality contents. The purpose of this study is to identify the effects and causes of graphic environmental factors on Cyber Sickness in Virtual Reality contents. To this end, cyber sickness experiments were conducted according to the light source and material settings, which are most commonly used in graphical environmental elements. Cyber Sickness measurements were based on the Simulator Sickness Question(SSQ) tool to derive an index that causes Cyber Sickness As a result of the analysis, the smaller the surface roughness, the higher the degree of Cyber Sickness, and the smaller the surface roughness, the smoother the surface of the 3D object, and many specular reflections from the light source occurred, which was confirmed to be the cause of great Cyber Sickness.

• 패션비즈니스
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• 제17권1호
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• pp.30-41
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• 2013

Augmented reality techniques have been increasingly employed in the textile and fashion industry as well as computer graphics sectors. Three-dimensional virtual clothing CAD systems have also been widely used in the textile industries and academic institutes. Motion tracking techniques are grafted together in the 3D and augmented reality techniques in order to develop the virtual three-dimensional clothing and fitting systems in the fashion and textile industry sectors. In this study, three-dimensional virtual clothing sample has been prepared using a 3D virtual clothing CAD along with a 3D scanning and reconstruction system. Motion of the user has been captured through an RGB-D sensor system, and the virtual clothing fitted on the user's body is allowed to move along with the captured motion flow of the user. Acutal fabric specimens are selected for the material characterization. This study is a primary step toward building a comprehensive system for the user to experience interactively virtual clothing under real environment.

• 방송공학회논문지
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• 제21권2호
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• pp.192-199
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• 2016

혼합증강현실 기술은 순수 현실세계와 순수 가상세계를 제외한 증강현실과 증강 가상을 포함하여 현실세계와 가상세계를 혼합하는 내용을 다룬다. 혼합증강현실에서 현실세계에서 움직이는 라이브행동자와 실체(LAE: live actor and entity)가 3D 가상공간과 혼합하여 자연스럽게 표현될 수 있으면, 원격 3D 몰입 회의, 3D 가상 체험 교육 서비스 등이 가능하다. 따라서 본 논문에서는 LAE를 3D 가상공간에 자연스럽게 혼합하고, 서로서로 상호작용할 수 모델을 표준 제안한다. 제안한 모델을 기반으로 LAE의 혼합과 상호작용이 수행될 수 있다.

• 한국실내디자인학회논문집
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• 제14권5호
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• pp.254-261
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• 2005

This paper presents an attempt to develop a visual programming language-based 3D virtual reality authoring tool intended to compose virtual interior space. The rapid development of digital technology and the wide spread of the Intenet have expanded the different uses of virtual reality in a number of applications ranging from interior design to building maintenance. In particular, the construction of cyber spaces based on existing interior spaces is becoming increasingly important. Current research, however, remains at the level of converting 3D models into virtual reality models, despite practitioners' needs for structural space models. Moreover, commercial tools to build virtual reality space have the disadvantage of targeting people who have professional knowledge of computer programs and computer graphics. Accordingly, the 3D virtual reality authoring tool developed in this research - called the VESL system - enables virtual and structural space to be easily composed using intuitive and interactive visual interfaces, which are based on visual programming techniques. The VESL system also provides an XML based semantic description of interior space, to be used to describe interior space information. We anticipate that the virtual reality spaces composed by this system will be of considerable use in the fields of architecture and interior design. Further research issues identified at the end of the research include developing a converter/filter for transforming Internet virtual reality standard language, or VRML, and evaluating the application of the system for practical use.