• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.13 no.7
• /
• pp.1303-1311
• /
• 2009

This paper describes a new visual VR authoring tool called DEVISE (Drawing Environment for VR-based Inquiry-learning Science Education) which is designed to support scientific inquiry learning. DEVISE allows users with no programming expertise to easily build the science inquiry learning VR contents by using 2D drawing interface to place 3D objects and specify properties of the virtual worlds or objects. This paper first describes the related works of VR authoring tools and inquiry learning virtual environments. It also explains SASILE, an integrated virtual environment system for supporting science inquiry learning, and its problems. Then, it describes DEVISE system components and its workflow, and it discusses the observation results of user evaluations of developing science inquiry-learning VR contents.

• Proceedings of the Korean Information Science Society Conference
• /
• 2002.04a
• /
• pp.745-747
• /
• 2002

본 논문에서는 가상환경을 위한 3차원 협동 저작도구를 제안한다. 이 시스템은 Client-Server 구조로서 Java분산 어플리케이션 모델인 3-tier 모델을 이용하였고, 3차원 장면 표면을 위해 자료구조는 Java 3D의 Scene Graph를 이용한다. 그리고 작업자의 역할 구분과 Client에서 공동작업물의 저장 기능을 부여하고 공동 작업의 결과를 Client에게 선택적으로 보여지게 함으로써 Client-Server 구조와 pessimistic Locking의 단점을 보완한다.

• Journal of the Computational Structural Engineering Institute of Korea
• /
• v.25 no.5
• /
• pp.389-395
• /
• 2012

U-City has been promoted nation-wide by development of recent IT technology. This paper studied the concept of 3D-virtual city in order to realize the current Ubiquitous City(U-City) efficiently, and to manage all the RFID/USN monitoring data in the real U-City. 3D-Virtual City is the concept of the reproduction of real world U-City, for embodying Ubiquitous technology while using Digital map, satellite image, VRML(Virtual Reality Modeling Language). U&V-City is the four-dimensional future city that real-time wire/wireless communication network and 3D-web GIS shall be connected that massive database, intelligent service be perceived through employing EAI(External Authoring Interface) that provides HTML&JAVA, and interface for efficient removal/process of massive information/ service and also by employing GPS/LBS/Navigation in support of world-wide orientation concept, and RTLS(Real Time Location System).

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2003.10a
• /
• pp.239-242
• /
• 2003

Although most of all modern Web contents accomplished by passive interface which used 2D, by way of developing super-highway internet net and a 3D compression technology, it gradually changed VR Web3D. In this approach, we presents a recently VR tech. as well as the implementation of Web3D based on VR mapping tools.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.24 no.7
• /
• pp.866-872
• /
• 2020

Indoor location-based services provide a service based on the distance between an object and a person. Recently, indoor location-based services are often implemented using inexpensive depth sensors such as Kinect. The depth sensor provides a function to measure the position of a person, but the position of an object must be acquired manually using a tool. To acquire a 3D position of an object, it requires 3D interaction, which is difficult to a general user. GUI(Graphical User Interface) is relatively easy to a general user but it is hard to gather a 3D position. This study proposes the Interactive LOcation Context Authoring Toolkit(ILOCAT), which enables a general user to easily acquire a 3D position of an object in real space using GUI. This paper describes the interaction design and implementation of ILOCAT.

• Journal of Sensor Science and Technology
• /
• v.16 no.3
• /
• pp.220-228
• /
• 2007

For many applications particularly in navigation system, a three-dimensional representation improves the usability of information. This paper introduces 3D Graphical User Interface (GUI) of indoor location tracking system, 3D Navigation View. The application provides users a 3D visualization of the indoor environments they are exploring, synchronized with the physical world through spatial information obtained from indoor location tracking system. It adopts widely used Virtual Reality Modeling Language (VRML) to construct, represent, distribute and render 3D world of indoor environments over Internet. Java, an all-purpose programming language is integrated to comprehend spatial information received from indoor location tracking system. Both are connected through an interface called External Authoring Interface (EAI) provided by VRML. Via EAI, Java is given the authority to access and manipulate the 3D objects inside the 3D world that facilitates the indication of user's position and viewpoint in the constructed virtual indoor environments periodically.

• Journal of Sensor Science and Technology
• /
• v.16 no.2
• /
• pp.110-114
• /
• 2007

In this paper we present 3-D Navigation View, a three-dimensional visualization of indoor environment which serves as an intuitive and unified user interface for our developed indoor location tracking system via Virtual Reality Modeling Language (VRML) in web environment. The extracted user's spatial information from indoor location tracking system was further processed to facilitate the location indication in virtual 3-D indoor environment based on his location in physical world. External Authoring Interface (EAI) provided by VRML enables the integration of interactive 3-D graphics into web and direct communication with the encapsulated Java applet to update position and viewpoint of user periodically in 3-D indoor environment. As any web browser with VRML viewer plug-in is able to run the platform independent 3-D Navigation View, specialized and expensive hardware or software can be disregarded.

• Proceedings of the Korean Information Science Society Conference
• /
• 2012.06c
• /
• pp.433-435
• /
• 2012

웨어러블 증강현실 환경은 동적으로 움직이는 HMD와 ARWand로 인한 시스템 오차와 사용자 오차가 발생하기 때문에, 3차원 공간 상에 다양한 위치에 존재하는 3D 객체를 효과적으로 선택하고 6 DOF 조작하는 것이 어렵다. 이러한 문제점을 해결하기 위해서, HMD, ARWand, 3D 객체간의 기하정보를 기반으로 3D 객체의 선택 확률을 모델링하고, 통합적으로 해석하여 최고의 선택 확률을 가지는 3D 객체를 선택할 수 있도록 한다. 그리고 근/원거리에 위치한 3D 객체를 효율적으로 조작하기 위해서 ARWand의 조작-디스플레이 맵핑 방법을 제안한다. 이는 3D 객체의 자연스러운 6 DOF 직접-간접 조작을 가능하게 한다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2012.06c
• /
• pp.436-438
• /
• 2012

본 연구는 최근 혁신적인 영상 기술 발전에 따른 3D 디스플레이 환경에 활용 가능한 3차원 기반의 다양한 입체 콘텐츠 제작을 위한 다시점(Multi-View)카메라 기반의 3D콘텐츠 저작도구 개발에 대한 연구 결과 및 활용사례를 소개한다. 3D입체 콘텐츠 저작기술은 양안시차를 고려한 다시점(Multi-View) 카메라 배치 및 렌더링 기술을 적용한 방식으로 전문가뿐만 아니라, 일반 사용자도 일정품질 이상의 생동감 있는 3D 입체 콘텐츠를 쉽게 제작 및 활용 가능하도록 사용자 편의를 고려한 직관적인 인터페이스로 구현하였다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.13 no.5
• /
• pp.877-886
• /
• 2009

In this paper, we propose a new method for the design and implementation of Cloth Simulation System for 3D fashion shopping mall based on Web. Web 3D shopping mall is implemented by using a Web3D authoring tool, ISB, which provides easy mouse operation. 3D human models and cloth item model are designed by low polygon modeling method of 3D MAX. The designed 3D human models and cloth item model are exported to XML file. Finally, 3D human models and cloth item model are displayed and animated on the Web by using ActiveX control based on DirectX. We also implemented textile palette and mapped it to clothes model by using alpha blending during simulation.