• 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.

• 재활복지
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• v.21 no.2
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• pp.233-246
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• 2017

The present study is a basic study for application of Augmented Reality (AR) to verb teaching for children with language developmental disorders and is intended to examine validity for the list of verbs at the beginning of development. To confirm the validity of the verbs list, the appropriateness of the verbs was evaluated by three professors with certification of KSLP (Korean Speech-Language Pathologist) working in the department of Speech-Language Pathology at the university. The motion validity test was conducted by showing motion implemented as AR to eight master's students in Speech-Language Pathology major, having them record verbs that came to their mind, and evaluating in the conformity. The second motion validity test was conducted by using 5-point Likert scales to 87 undergraduates in Speech-Language Pathology major and having them see the motions in AR and marked the degrees to which them see the motions conform to the relevant verbs on the scales. Using the SPSS 21.0 program, descriptive statics analyses of the results were conducted. Through this all process, thirty verbs were selected as having content validity. It could be seen that when AR based communication system are applied, things and backgrounds that complement the insufficient movements of motions and help motion recognition should be also provided. In future studies, the 3D images of the AR based communication system will be complemented and the content validity will be verified with typically developing children and the children with language developmental disorders.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2016.11a
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• pp.157-158
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• 2016

본 논문에서는 구글 탱고 플랫폼을 이용한 실내 3차원 지도 취득과 이를 이용한 증강 내비게이션을 구현하는 방법을 제시한다. 취득한 3차원 지도는 가공을 통해 서버로 전송된다. 내비게이션은 초기 위치를 QR 코드로 파악하고 목적지와의 관계를 통해 가속도 센서와 방향 센서를 사용하여 올바른 길로 인도한다. 증강현실을 구현하기 위해 길 안내화면은 기기의 카메라를 통해 현실을 배경으로 하였고, OpenGL ES 라이브러리를 활용하여, 직진, 좌회전, 우회전 총 세 개의 화살표를 렌더링 한 후 카메라위에 중첩하였다. 증강 내비게이션을 통해 사용자는 스마트폰의 화면만 보고 실내에서 안전하게 장애물을 피하며 빠르게 목적지까지 도착할 수 있게 된다.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.785-789
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• 2008

증강현실은 실제환경에 가상물체를 합성하는 기술을 이용하고 여러가지 상황정보를 반영하여 가상물체가 실제환경에 있는듯한 느낌을 준다. 기존의 연구에서는 주로 가상물체의 좌표계를 실제환경과 일치시킴으로서 사실성을 주고 있다. 하지만 실제 환경의 주변광원이 가상물체에 사실적으로 적용되지 않으면 몰입감이 떨어지게 된다. 본 논문에서는 증강현실에서 가상물체에 실제환경의 상황정보 중 음영정보를 손쉽게 일치시키는 방법을 제안하여 사실성을 증가 시키고자 하였다. 음영효과는 주변광에 의해서 만들어지므로 가상물체를 합성할 위치 주변의 광원을 미러볼을 사용하여 쉽고 간단하게 획득하고 가장물체에 적용될 광원지도를 생성하는 방법을 제안한다. 또한, 본 논문에 소개될 주변광원 정보 획득 및 음영을 적용 방법은 특수장비가 필요없고 실시간으로 처리가 가능하기 때문에 유비쿼터스 환경, 모바일 환경 등 폭 넓게 적용될 수 있다.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.643-651
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• 2022

The mobile augmented reality(MAR) market is rapidly growing with following the sudden rise of the metaverse. However, research on improving user experience in mobile augmented reality environment is lacking. This study aims to develop the usability principles of an AR-based smartphone app. The research conducts following methods. 1)The characteristics of MAR were understood to identify usability elements of AR apps. 2)Usability principles were collected through analysis of case studies on the usability of AR and the 14 usability principles were developed through in-depth interviews with experts for the purpose of chunking. 3)To verify the 14 developed usability principles, evaluation items were composed based on the usability principles and usability evaluation survey was conducted. Consequently, significant differences were found in immersivity, presence, efficiency, satisfaction, playfulness and It was verified that the developed usability principle is useful in developing AR based smartphone apps. This study is meaningful in that it conducted the basic research of mobile AR usability principles

• Journal of Korea Game Society
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• v.18 no.3
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• pp.5-16
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• 2018

As the augmented reality market has rapidly grown in recent years, various platform interfaces have emerged. In addition, it provides recommended travel information for each user based on a smartphone. Based on the recommended travel information, it provides the information of a tour path. Even though it is implemented in mobile devices and does not have continuous communication with servers, it needs new technologies that can provide additional entertainment services such as cultural and historical sites in corresponding regions while still providing guides depending on user movements

• Journal of Korean Society for Geospatial Information Science
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• v.6 no.1 s.11
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• pp.19-26
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• 1998

In general, GIS provides a user with geographical information according to his requirements after a computer stores digitized spatial data from real scenes. Geographical information from digitized spatial data lacks of reality due to the exclusion of real scenes. However, Augmented Reality(AR) allows a user to see the real world with virtual objects superimposed upon or composited with the real world. Therefore it enhances a user's perception of the real world. In this paper, we present the development on 3D geographical information guide system using augmented reality that displays the real world with virtual objects such as building name, road name, etc., in real time.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.575-576
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• 2011

휴대형 단말기인 스마트폰이 급속도로 확산되면서 스마트폰을 이용한 위치 관련 앱들이 최근에 각광을 받고 있다. 특히 증강현실 시스템과 관련된 앱들은 영상에 대한 인식보다는 단말기의 위치를 파악하여 2차원 혹은 3차원 지도 데이터와 결합하는 방법을 많이 활용하고 있다. 그러나 스마트폰 단말기의 위치에 대한 정확성은 매우 높은 편이지만 기본적으로 제공되는 GSP의 오차범위와 주변 환경에 따라 발생하는 오차로 인해 부정확한 결과를 초래하기도 한다. 이 문제 해결을 위해 스마트폰의 증강현실 앱에 위치를 보정해 주는 기능을 첨가하여 GPS가 올바로 작동하지 않는 지역에서도 증강현실 장면을 보여줄 수 있게 되었다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.197-199
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• 2016

일반적으로 네비게이션은 차를 이용하는 것으로 발전한 것이 대부분이며, 지형이나 지도 또는 정보를 저장했다가 사용하는 로드뷰를 이용하여 개발되고 있다. 본 연구에서는 증강현실 기술과, 스마트폰의 카메라, 센서 등을 이용하여 실제의 길과 주변 환경을 스마트폰에 보여주고, 실제 길 위에 찾고자 하는 목적지까지 길을 안내해주며 다양한 부가 정보를 제공하는 도보 길찾기 앱을 개발하고자 한다. 기존의 앱과 다른 점은 증강현실 기술을 활용하는 것이다. 기존 네이게이션에서 2D나 3D로 그래픽 처리되어 있는 것을 실제 화면을 적용하여 직관적으로 길을 찾을 수 있고, 부가적으로 주변의 정보들을 실시간으로 표현할 수 있는 이점이 있다.

• Journal of the Korea Computer Graphics Society
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• v.24 no.4
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• pp.39-54
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• 2018

Recently, augmented reality(AR) based building information applications using a smart phone provide information in the static form irrespective of the distance between a user and a target building. If many target buildings are located close to each other, discrimination of information is reduced due to overlapping information objects. Furthermore, it is difficult to intuitively grasp the current position of the user in the previous AR-based applications. In this paper, to solve these limitations, we have designed and implemented a novel building information system in which the location and size of information objects are adaptively displayed according to locations of a user and target buildings, and which allows users to intuitively understand their location by providing a 3D map that displays the user's location and all target buildings within a given distance in real-time. The AR-based building information application proposed in this paper focuses on the building guide in Deoksu Palace in Jung-gu, Seoul.