• Journal of Information Technology Services
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• v.10 no.4
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• pp.269-280
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• 2011

Mobile Augmented Reality (mobile AR), as one of the most prospective mobile applications, intends to provide richer experiences by annotating tags or virtual objects over the scene observed through camera embedded in a handheld device like smartphone or pad. In this paper, we analyzed the current status of the art of mobile AR and proposed a novel Points of Interest (POIs) data model based on ontology to provide context-aware information retrievals on lots of POIs data. Proposed ontology was expanded from the standard POIs data model of W3C POIs Working Group and established using OWL (Web Ontology Language) and Protege. We also proposed a context-aware mobile AR platform which can resolve three distinguished issues in current platforms : interoperability problem of POI tags, POIs data retrieval issue, and context-aware service issue.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.602-604
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• 2019

근래 각광받는 VR, AR 연구의 일환으로 증강현실에서 작곡과 협주가 가능한 사운드 소프트웨어를 연구하고 개발하려 한다. 직관적인 UI 를 통해 초보자도 쉽게 익힐 수 있고, 기본적인 작곡과 모바일 디바이스를 이용하는 사용자와의 합주가 가능하다. 스피커의 위치에 따른 공간음향을 느낄 수 있으며, 스피커에서 나오는 소리를 시각화한다. 공간음향과 소리의 시각화는 사용자에게 몰입감을 제공하며, 일반 사용자도 쉽게 MIDI 편집을 다룰 수 있을 것이라 기대한다.

• Journal of the Semiconductor & Display Technology
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• v.21 no.1
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• pp.136-141
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• 2022

In this paper, we designed, implemented, and verified the SLAM system that can be used on mobile devices. Mobile SLAM is composed of a stand-alone type that directly performs SLAM operation on a mobile device, and a mapping server type that additionally configures a mapping server based on FastAPI to perform SLAM operation on the server and transmits data for map visualization to a mobile device. The mobile SLAM system proposed in this paper is to mix the two types in order to make SLAM operation and map generation more efficient. The stand-alone type SLAM system was configured as an Android app by porting the OpenVSLAM library to the Unity engine, and the map generation and performance were evaluated on desktop PCs and mobile devices. The mobile SLAM system in this paper is an open source project, so it is expected to help develop AR contents based on SLAM in a mobile environment.

• Journal of the Korean Institute of Gas
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• v.15 no.6
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• pp.1-7
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• 2011

The Measurement of risk parameter in city-gas equipments have been measured and confirmed by human, and evolved into remote monitoring system using wireless communication. Furthermore, domestic and international industry increase the efficiency of management, which can develop remote monitoring and control system using wireless communication. However, Those wireless system might be decrease the efficiency and ease because of connecting PDA and lap-top using wire-cable when data have checked immediately from outside. This paper is able to improve efficiency of safety management on city-gas equipments by developing mobile city-gas safety management system on AR.

• Journal of Digital Contents Society
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• v.15 no.2
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• pp.263-270
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• 2014

This paper proposes a new metadata schema for effective mobile service of augmented reality technology, which is used in the convergence of media into a frame among the real world image and objects of virtual world. The proposed metadata schema is extended from JPSearch Core Metadata Schema (ISO/IEC 24800-2 International Standard) with analysis of the functionalities under industrial requirements, and enables to provide an effective application in the actual services. In addition, the proposed schema is available to organize the exchange of information between heterogeneous systems. With development of the prototype system, the proposed metadata schema is going to be submitted and verified under ISO/IEC JTC1 SC29 WG1 JPEG AR standard project.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.988-990
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• 2018

최근 증강현실의 관심이 높아짐에 따라 다양한 분야에 증강현실을 접목시키려는 시도가 일어나고 있다. 따라서 본 논문에서는 모바일 증강현실을 이용하여 이용자에게 차량 부품에 대한 정보와 간단한 정비 방법을 제공하는 시스템을 제안한다. 구현에 있어서 Unity 3D와 증강현실 라이브러리 Vuforia를 사용한다. 본 논문에서는 알고리즘의 복잡도가 낮고 안정적이며 구현이 간편한 마커를 사용하여 3D 좌표를 추출한다. 사전에 차량 각 부품에 맞게 마커를 제작하여 등록한 뒤 부착된 마커를 모바일 카메라로 인식하여 지정된 3D 좌표에 텍스트, 이미지 및 동영상을 띄워 제공한다. 이렇게 제작된 시스템은 어플리케이션 사용자에게 보다 직관적으로 자동차에 대한 정보와 간단한 정비 방법 등을 제공할 수 있으며 나아가 차량 정비 교육 등에도 충분히 활용 가능할 것으로 예상된다.

• Journal of Korea Game Society
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• v.8 no.2
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• pp.85-96
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• 2008

Recently, research on augmented games as a new game genre has attracted a lot of attention. An augmented game overlaps virtual objects in an augmented reality(AR) environment, allowing game players to interact with the AR environment through manipulating real and virtual objects. However, it is difficult to release existing augmented games to ordinary game players, as the games generally use very expensive and inconvenient 'backpack' systems: To solve this problem, several augmented games have been proposed using mobile devices equipped with cameras, but it can be only enjoyed at a previously-installed location, as a ‘color marker' or 'pattern marker’ is used to overlap the virtual object with the real environment. Accordingly, this paper introduces an augmented game, called augmented galaga based on traditional well-known galaga, executed on mobile devices to make game players experience the game without any economic burdens. Augmented galaga uses real object in real environments, and uses scale-invariant features(SIFT), and Euclidean distance to recognize the real objects. The virtural aliens are randomly appeared around the specific objects, several specific objects are used to improve the interest aspect, andgame players attack the virtual aliens by moving the mobile devices towards specific objects and clicking a button of mobile devices. As a result, we expect that augmented galaga provides an exciting experience without any economic burdens for players based on the game paradigm, where the user interacts with both the physical world captured by a mobile camera and the virtual aliens automatically generated by a mobile devices.

• Journal of Industrial Convergence
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• v.19 no.1
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• pp.79-85
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• 2021

The purpose of this study was to investigate the existing augmented reality (AR) contents in education and to develop digital AR contents to promote the learning outcomes in nursing skills education. AR contents has been widely used in education such as children's books, coloring, or exhibition experiences, but rarely developed in nursing education. We wanted to develop AR contents on nursing skills which required memorization of complex contents. In order to improve nursing students' memorization skills, we developed AR techniques holding and executing cameras along with game elements of time and points. In order to give the effect of placing objects in front of the user's eyes, an augmented reality camera was applied, and a total of 40 levels were created to produce the sequence of nursing techniques. This study showed that learning contents in the medical field requiring expertise could be implemented as AR contents. The content developed in this study will be used as a learning aid for nursing students.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.2
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• pp.305-310
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• 2015

Recently, as AR(Augmented Reality) technology develops, it is used in field of diverse industry and specially affects structures and human interaction in field of architecture. This paper proposes 3D visualization application for realistic experience of structures by using outdoor AR technology. Proposed application visualizes structures such as high buildings, bridges, ships, and so on to be constructed in future, considering ambient environment by using outdoor AR technology, provides precisely user structures after completing construction and offers more realistic information and immersion as compared with previous methods.

• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.335-341
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• 2018

This paper is a study on map contents to be embedded in a new type of mobile device that combines 2D information and 3D information by combining 2D information with augmented reality technology. We also describe the planning and production of a 3D map application called 'NSU AR Map' using Unity3D engine to help understand this paper. 'NSU AR Map' is a map application that enables accurate identification of user's location and real-world view through 360 View. Based on the experience gained during the process of 3D map application, this paper will present how 3D technologies and augmented reality technologies are applied to new map applications and how they can be developed in the future.