• Journal of Korea Game Society
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• v.3 no.2
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• pp.30-34
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• 2003

Image-based rendering is an approach to generate realistic images in real-time without modeling explicit 3D geometry, Especially, TIP(Tour Into the Picture) is preferred for its simplicity in constructing 3D background scene. However, TP has a limitation that a viewpoint cannot go far from the origin of the TIP for the lack of geometrical information. in this paper, we propose a method to interpolating the TIP images to generate smooth and realistic navigation. We construct multiple TIP models in a wide area of the virtual environment. Then we interpolate foreground objects and background object respectively to generate smooth navigation results.

• Korean Institute of Interior Design Journal
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• v.15 no.5 s.58
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• pp.306-313
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• 2006

Digital simulation which was introduced to the architectural field due to the rapid growth of computer graphics, gave birth to a new type of contents called 'virtual reality', led by the interaction with the users and real time processing. The public attention is drawn to the virtual reality's potential as a next generational space simulation it, having the unique characteristics of 'simulation', 'interactivity', 'tole-presence', and 'immersion', is capable of taking a virtual tour of a space with a size equivalent to that of a real space, as well as proceeding with the design progress. Nonetheless, many problems impeding CPU's real time processing of an excessively loaded architectural model data have been pinpointed over the time. Yet such GPU based game engines as 'DirectX' and 'OpenGL', developed to deal with these impediments, have not been easily applied to the architectural simulation in the design process, due to the high license cost and the specific technical requirements for the system. The virtual reality has been developed and distributed centering around the gaming field, and game developers recently show a greater tendency to include level editors in the package for the expandability purpose. Thus, we plan to propose architecture simulation which utilizes level editors in this study. In addition, the compatibility of the game engine based level editors of Quake and Unreal which form the standards for the open source FPS games, based on VRML, the standard format for the virtual reality, was compared and analyzed. Taking the example of Villa Savoye of Le Corbusier, its application possibility as an architecture simulation was assessed, by measuring the extent to which the performance of such characteristic features of the virtual reality as interactivity, immersion, and tele-presence, was improved.

• Journal of Convergence for Information Technology
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• v.7 no.3
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• pp.111-116
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• 2017

This study offers the possibility as a new product of souvenirs from cultural tourist sites with virtual reality contents, instead of a simple exhibit. Users can watch augmented reality contents on souvenirs, and use the virtual experience service of cultural tourist sites with VR viewer. It has 4K-class high-quality $360^{\circ}$ image capture to increase the immersion of users in virtual space, implement virtual reality space and intuitive UI interaction with users using IMU (Inertial Measurement Unit). It is also possible to apply various add-on functions, including 3D contents, through technical development to increase its marketability, and apply in other industries. In addition, the prototype of the souvenir and VR viewer will be made by using a 3D printer and such in order to apply the contents which will be introduced in this study. Various product expansions can be considered through consultation with the relevant companies for the use of ready-made products.

• Journal of Advanced Navigation Technology
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• v.25 no.1
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• pp.108-114
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• 2021

In recent years, human is experiencing an 'untact' era that has not been existed before. A remarkable features of an untact era is a limited or no interaction with other people and things in a daily life. In order to overcome this special situation, diverse state-of-the-art technologies like ICT technology are being used to give the effect of face-to-face and contact. In particular, Virtual Reality technology allows users to actively interact with virtual environments, objects, and other people, thereby providing effects that are as similar as possible to experience in real life. School freshmen are also experiencing various inconveniences because they are not experiencing the environment or academic management of newly admitted schools in the untact era. This research is a study and implementation of 'Virtual School Life Experience Content' which provides new students to tour campus, to utilize the school buildings facilities, to experience of academic schedules including course registration, and to participate in school events in an environment that is as close as possible to the real campus. Freshmen will be able to easily adapt to a new school through the implemented VR content.

• Journal of Fashion Business
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• v.9 no.3
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• pp.134-149
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• 2005

Although Internet retailing is becoming a viable channel for apparel retailing, consumers are still reluctant to use Internet for apparel purchasing because at their concerns at Internet security and the difficulties at virtual shopping in unfamiliar shopping environment. The purpose at this study is to examine the nature at perceived risk associated with Internet apparel shopping and risk-reduction strategies used by Internet apparel shoppers. The data were collected via an online survey by a online research company. A total at 4,254 Internet users participated in this survey. Among these Internet users, 1,146 respondents had previous shopping experience in Internet shopping. Within this group, 195 were Internet apparel information seekers, and 589 were Internet apparel purchasers. Descriptive statistics, analysis of variance, and t-test were used to analyze the data. The perceived risks and risk-reduction strategies used by Internet apparel no-interest shoppers, Internet apparel information seekers (browsers), moderate Internet apparel purchasers, heavy Internet apparel purchasers were examined and compared. The results indicated that these tour groups were significantly different in apparel related risk, performance risk, and privacy risk. Internet purchasers tend to perceive more apparel-related, performance, and privacy risks than others. The results also indicated that these tour groups were significantly different in their opinions of risk-reduction strategies.

• Journal of the Health Care and Life Science
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• v.8 no.2
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• pp.127-133
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• 2020

While only the experts could create the contents in the existing VR contents business, in the proposed "Untact Social VR Video-Based Tour Scheduling", the GUI (Graphic User Interface) allows anyone to easily and quickly share the information taken through VR camera after creating. It is intended to serve as a variety of SNS-based media by developing a structure that can be shared in html format after creating with the GUI menus. In particular, it is applied to companies that operate the SNS-type publicity projects including experience facilities and viewing facilities, and the various SNS-type publicity businesses that create the VR contents. Communication is clear compared to the existing homepage-based information delivery method, and It aims to provide universality that anyone can easily edit in an environment where only experts can edit VR video contents of.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.39 no.5
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• pp.45-55
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• 2002

In this paper, we describe an outdoor augmented reality system using GPS tracking for position and attitude information. The system consist of a remote mobile operation unit and a ground operation unit. The remote mobile operation unit includes a real-time image acquiring device, a GPS tracking device, and a wireless data transceiver; the ground operation unit includes a wireless transceiver, a virtual image generating device, and an image superimposing device. The GPS tracking device for measurement of position and attitude of the remote mobile operation unit was designed by TANS Vector and RT-20 for DGPS. The wireless data transceiver was for data transmission between the remote mobile operation unit and the ground operation unit. After the remote mobile operation unit was installed on a vehicle and a helicopter, the system was evaluated to verify its validity in actual applications. It was found that the implemented system could be used for obtaining real-time remote information such as construction simulation, tour guide, broadcasting, disaster observation, or military purpose.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1069-1072
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• 2017

최근에 360도 파노라마(Panorama) 사진과 영상을 이용한 가상현실 콘텐츠 제작이 급격히 증가하고 있다. 본 연구에서는 지역문화유산의 360도 파노라마 VR 콘텐츠 속에 존재하는 3D 대상물들(Objects)을 실시간으로 출력하는 시스템에 대해 연구하였다. 본 논문에서 제안하는 시스템은 지역문화유산의 가상투어(Virtual tour)뿐만 아니라 가상투어상의 주요 대상물들을 3D 프린터로 실시간 인쇄하여 소유할 수 있다는 특징을 갖는다. 지역문화유산의 가상현실을 통한 학습효과에 추가하여 주요 문화유산의 3D 모형의 출력을 통해 지역문화유산의 형태를 좀 더 현실감 있게 학습할 수 있다는 장점과 가상투어와 디지털 생산(Digital Manufacturing)/가상 생산(Virtual Manufacturing) 기술이 결합하는 새로운 형태의 서비스가 가능할 것으로 생각된다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.559-561
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• 1999

구형 파노라믹 영상은 영상기반의 가상현실 시스템에서 가상환경을 구축하기 위해 널리 이용되고 있다. 이러한 구형 파노라믹 영상은 카메라를 회전시켜 실세계를 촬영하고 각 영상들을 정렬(image alignment)을 거쳐 구에 사상시킴으로써 얻어진다. 실세계로부터 직업 입력된 영상을 가상환경으로 표현하기 때문에 기하학적 기반의 가상환경에 비해 현실감이 뛰어나다. 그러나 고정된 시점에서 카메라의 회전에 대해서만 가상환경의 영상이 복원 가능하므로 가상환경의 항해(navigation)에 있어서 제약을 받는다. 본 논문에서는 시점의 이동 운동에 따른 운동시차(motion parallax)를 제공하기 위해 구 파노라믹 영상의 특정 부분에 TIP(Tour Into the Picture)기법을 이용하여 spidery mesh 인터페이스를 제공하는 방법을 제안한다. 본 논문에서 제안하는 가상환경 저작 기술은 보다 나은 사용자 상호 작용(interaction)을 제공하는 영상기반 가상 환경 구축에 활용될 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.1008-1011
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• 2017

최근 360도 동영상, 게임 등 VR을 활용한 컨텐츠가 증가하고 있다. 이러한 시대에 맞추어 충북대학교 캠퍼스를 배경으로 VR 컨텐츠를 만들어 학교를 홍보 하려고 한다. 본 VR 컨텐츠를 통해 일반 홍보물과는 다르게 HMD를 통해 360도 파노라마 사진으로 직접 보면서 화살표를 통해 장소를 이동할 수 있고 건물이나 위치에 대한 설명도 볼 수 있으며 사용자가 현장감과 생동감을 느낄 수 있고 더 흥미롭게 접근 할 수 있는 서비스를 제공하고 있다.