• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.544-547
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• 2008

Navigation in 3D virtual environment(VE) is very difficult because the virtual environment is lack information than real 3D world. So navigation is import research subject in 3D VE. In this paper, we study tour path setting method using spline curve. The spline curve is augmented polynomial function. So the curve is differentiable. In particular, since the curves which are order of 2 and 3 are second order differentiable those are sufficiently smooth for using the computer graphics and CAD system.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.42 no.1
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• pp.61-68
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• 2005

Image-based rendering is an approach to generate realistic images in real-time without modeling explicit 3D geometry. Especially, owing to its simplicity, TIP(Tour Into the Picture) is preferred to constructing a 3D background scene. Because existing TIP methods have a limitation in that they lack geometrical information, we can not expect a accurate scene if the viewpoint is far from the origin of the TIP. In this paper, we propose the method of constructing a virtual environment of a wide area by blending multiple TIP images. Firstly, we construct multiple TIP models of the virtual environment. Then we interpolate foreground and background objects respectively, to generate a smooth navigation image. The method proposed here can be applied to various industry applications, such as computer game, 3D car navigation, and so on.

• Journal of Game and Entertainment
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• v.2 no.1
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• pp.35-44
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• 2006

Objective of this study is to develop a 3D car navigation system that shows the driving direction to a destination through real-time 3-D panoramic views of the route. For the purpose, a new searching process was established to find the optimal driving direction based on the driver's current location and the real-time traffic situation and the TIP (tour into the picture) method was extended to implement a wide virtual environment. A virtual environment was built up by applying the extended TIP method to the panoramic images taken at a constant distance from a real road, and then, displayed 3-D navigation as clear as the real images. The car navigation system developed in this study provides the optimal driving direction and real-time traffic situation using 2-D navigation module and 3D navigation module.

• Journal of Korean Library and Information Science Society
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• v.43 no.3
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• pp.291-312
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• 2012

The purpose of this study is to review the advanced researches of the library tour, to extract the educational properties of library tour, and to propose the pedagogical meanings of library tour by reinterpreting the library tour based on pedagogical theories and foundations. As the result of this study, the extracted educational properties of library tour are like these: experience, media, explanation, interpretation, interaction. The educational properties are extracted through the related theories and researches. The pedagogical foundations based on the educational properties of library tour are like these: 1) John Dewey's experience theory. 2) Dale & Dwyer's teaching & learning media theories. 3) Bruner's educational theory. It's expected that this study will help the education librarians to plan, develop, and implement the face to face or virtual library tour program based on the pedagogical foundations for the effective library education.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04b
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• pp.949-952
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• 2001

본 논문은 인터넷의 발달로 가능해진 가상현실의 구현과 가상현실세계에서의 자아를 대신한 아바타(AVATAR)를 이용하여 가상 여행 System 설계에 대해서 연구하였다 가상현실(Virtual Reality) 기술은 컴퓨터 그래픽을 이용하여 가상세계(Virtual World)를 구현하고 아바타를 이용하여 인간이 실제로 여행하는것과 같은 몰입감을 부여하는 것이 목적이다. 더 나아가서 인간의 시각을 통해 전해지는 영상을 이용하여 가상현실을 조정함으로서 현실에서 인간이 느끼는 상태를 가상세계에 적용하여 더욱 완벽한 현실 대체를 연구하였다.

• Journal of Broadcast Engineering
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• v.15 no.2
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• pp.163-172
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• 2010

The free viewpoint video delivers an active contents where users can see the images rendered from the viewpoints chosen by them. Its applications are found in broad areas, especially museum tour, entertainment and so forth. As a new free-viewpoint application, this paper presents a stereoscopic free-viewpoint TIP (Tour Into Picture) where users can navigate the inside of a single image controlling a virtual camera and utilizing depth data. Unlike conventional TIP methods providing 2D image or video, our proposed method can provide users with 3D stereoscopic and free-viewpoint contents. Navigating a picture with stereoscopic viewing can deliver more realistic and immersive perception. The method uses semi-automatic processing to make foreground mask, background image, and depth map. The second step is to navigate the single picture and to obtain rendered images by perspective projection. For the free-viewpoint viewing, a virtual camera whose operations include translation, rotation, look-around, and zooming is operated. In experiments, the proposed method was tested eth 'Danopungjun' that is one of famous paintings made in Chosun Dynasty. The free-viewpoint software is developed based on MFC Visual C++ and OpenGL libraries.

• Proceedings of the KAIS Fall Conference
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• 2001.05a
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• pp.326-329
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• 2001

본 논문은 인터넷의 발달로 가능해진 가상현실의 구현과 가상현실세계에서의 자아를 대신한 아바타(AVATAR)를 이용하여 가상 여행 System 설계에 대해서 연구하였다. 가상현실(Virtual Reality) 기술은 컴퓨터 그래픽을 이용하여 가상세계(Virtual World)를 구현하고 아바타를 이용하여 인간이 실제로 여행하는 것과 같은 몰입감을 부여하는 것이 목적이다. 더 나아가서 인간의 시각을 통해 전해지는 영상을 이용하여 가상현실을 조정함으로서 현실에서 인간이 느끼는 상태를 가상세계에 적용하여 더욱 완벽한 현실 대체를 연구하였다.

• Proceedings of the IEEK Conference
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• 2003.11b
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• pp.141-144
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• 2003

This paper proposes the distributed virtual environment framework for collaboration between heterogeneous platforms. The proposed system consists of Client, Content Server(CS), and Reflector Server(RS). The Client is composed of VR library(VRL), Interaction Manager(IM), Distributed Interaction Manager(DIM), and Network Interface(NI). The proposed Client structure can support various display environments. The XML-based IM and DIM lets the users define and add the interactions. The proposed Server structure synchronizes the distributed interaction between heterogeneous platforms and provides transparency to the users. Therefore, the proposed framework enables the users to implement virtual collaboration environment for their tasks. Moreover, it can also be used for research and development activities between a large number of the remote users. The usefulness of the framework was verified by applying it to the virtual heritage tour system.

• Journal of Intelligence and Information Systems
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• v.29 no.1
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• pp.65-78
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• 2023

This study is based on place attachment theory, explores how to transform tourists' virtual experience into on-site tourism willingness through virtual attachment, And explores the moderating role of happiness in it. A real travel intention model is constructed for people who work in tourism or have the ability to travel alone. Analyzed through analysis tools such as SPSS and AMOS, We hope to explore if the virtual experience can be transformed into a willingness to travel on the ground, and how happiness moderates virtual attachment to virtual tourism experiences. The result shows, the relationship between Virtual Travel Experience and Virtual Attachment is moderated by Happiness, Virtual Attachment is positively related to Place Attachment (Place dependence & Place identity), Place Attachment is positively related to Real Travel Intention. The relationship between tourists and tourist destinations is explored in depth through this study to provide references and suggestions for tourism development.

• 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.