• 한국IT서비스학회지
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• 제18권5호
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• pp.85-97
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• 2019

In this study, we developed the Field-Experiential Learning Framework Using the Location Based Mobil-learning System (LBMS) and it is mobile Augmented Reality (AR) for smart learning system which is advanced e-learning. AR is technology that seamlessly overlays computer graphics on the real world. LBMS-AR has become widely available because of mobile AR. Mobile AR is possible to get information from real world anytime, anywhere. Nowadays, there are various areas using AR such as entertainment, marketing, location-based AR. We analysed the result of survey and implemented the functions. Also, for survey about application's effectiveness, we have focus group interview (FGI). Then we demonstrated and explained the application to them. The result of survey about application's effectiveness shows that application have higher utilization in education area. One of the most promising areas is education. AR in education shows lifelike images to users for realism. It's a good way for improving concentration and attention. We utilize only a beacone for image-based AR without other sensor.

• 반도체디스플레이기술학회지
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• 제20권4호
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• pp.96-101
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• 2021

The SLAM market is growing rapidly with advances in Machine Learning, Drones, Augmented Reality technologies. However, due to the absence of an open source-based SLAM library for developing AR content, most SLAM researchers are required to conduct their own research and development to customize SLAM. In this paper, we propose an opensource-based Mobile Markerless AR System by building our own pipeline based on Visual SLAM. To implement the Mobile AR System of this paper, it uses ORB-SLAM3 and Unity Engine and We experimented with running our system in a real environment and confirming it in the Unity Engine's Mobile Viewer. Through this experimentation, we can verify that the Unity Engine and the SLAM System are tightly integrated and communicate smoothly. Also, we expect to accelerate the growth of SLAM technology through this research.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2020년도 추계학술발표대회
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• pp.490-493
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• 2020

최근 혁신 기술로 떠오르고 있는 AR 기술을 활용하여 유아용 AR 모바일 애플리케이션을 기획했다. 놀이와 교육을 접목시킨 형태로 아이들의 흥미를 유발하여 다양한 분야로의 교육 접근성을 증대시킨다. Unity 3D Engine과 Vuforia SDK를 주로 사용하여 Android 기반의 모바일 애플리케이션을 설계했다.

• 한국멀티미디어학회논문지
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• 제20권2호
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• pp.298-312
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• 2017

The fourth industrial revolution is expected to show technological innovation that develops among different fields beyond boundaries through the convergence and integration of fields. With the development and convergence of digital technology, users can receive information anywhere in the world. In this paper, we propose an adaptive interaction concept in a various environment by using a mobile robot based on projection augmented reality (AR). Most previous studies have aimed fixed projector or projection for a pre-designed environment. Thus, they provide only limited information. To overcome the abovementioned problem, we provide the adaptive information by implementing a projection AR system that can be mounted on the mobile robot. For that, the mobile robot based on the projection system was defined as Pervasive AR. Pervasive AR is configured with a pervasive display, a pervasive interface, and seamless interaction. The Pervasive AR technology enables the user to access information immediately by expanding the display area into real space, which implies an environment of intuitive and convenient interaction by expanding the user interface. This system can be applied to various areas, such as a home environment and a public space.

• 융합보안논문지
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• 제11권6호
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• pp.17-23
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• 2011

본 논문에서는 기존의 이러닝(e-learning)에서 발전한 모바일 증강현실(AR: Augmented Reality)을 활용한 스마트 러닝(smart learning) 시스템을 제안한다. 모바일의 하드웨어 발전과 확산으로 인해 눈으로 보는 현실 세계에 가상 물체를 겹쳐 보여주는 증강현실 관련 서비스가 증가하고 있다. 모바일을 이용한 증강현실 서비스는 언제 어디서나 제약을 받지 않고 사용자가 원하는 정보를 현실 세계에서 얻을 수 있다. 현재까지는 엔터테인먼트 사업, 마케팅, 위치 기반 서비스와의 연계를 통한 활용이 많은데, 앞으로 증강현실의 응용분야 중에서 가장 유망한 분야 중의 하나가 교육이다. 사용자에게 생동감 있는 영상을 보여줄 수 있기 때문에 현실감과 집중력을 높일 수 있다. 본 논문에서는 모바일에 장착된 GPS, 디지털 나침반, 기울기 센서로 구현하는 위치 기반 기술에서 벗어나 카메라 입력을 통한 이미지 기반 기술을 활용하여 스마트러닝 시스템을 제안한다.

• 반도체디스플레이기술학회지
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• 제21권1호
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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.

• 한국콘텐츠학회논문지
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• 제10권7호
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• pp.1-9
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• 2010

본 논문에서는 모바일 환경 증강현실 저작과 일반 데스크 탑 증강현실 저작의 차이점을 분석하고, 사용자가 모바일 장치를 활용하여 이동 중에 현장에서 직접저작을 지원하는 인터페이스 방법에 대해서 제안한다. 최근 스마트폰을 비롯한 다양한 모바일 장치에서 증강현실 기술이 활발히 연구되면서 언제, 어떠한 장소에서도 증강현실 시스템의 사용을 가능하게 해 주었다. 이로 인하여 사용자 개인의 맥락 정보를 직접 현장에서 저작하는 것이 필요로 하게 되었다. 모바일 장치를 이용하여 증강현실 콘텐츠를 손쉽게 저작하기 위해 제한적인 모바일 장치의 인터페이스를 극대화 하여야 한다. 이를 위해 시각적 큐를 활용한 콘텐츠의 조작, 애니메이션 지정 등의 속성을 간단하게 부여 한다. 그리고 저작 과정에서 부착된 카메라를 활용함에 생기는 불편함을 제거하기위하여 획득된 정지 영상을 기반으로 선택적 환경에서 저작이 가능하도록 한다. 뿐만 아니라 획득된 영상을 활용하여 한 명 이상의 사용자가 콘텐츠를 함께 저작 할 수 있는 협업환경 구현이 가능하다. 제안된 인터페이스들의 유용성은 사용자 설문을 통하여 검증 해 보았다. 제안된 방법이 모바일 환경에서 증강현실 콘텐츠 저작에 효과적인 인터페이스로 활용 될 것이 기대된다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.22-29
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• 2022

Recently, with the development of mobile computing power, mobile-based VR and AR services are being developed. Due to network performance and computing power constraints, VR and AR services using large-capacity 3D content have limitations. A study on an efficient 3D content load method for a mobile device is required. The conventional method downloads all 3D content used for AR services at the same time. In this paper, we propose an active 3D content load according to the user's track. The proposed method is a partitioned 3D object load. Edge servers were installed for each area and connected through the MESH network. Partitioned load the required 3D object in the area referring to the user's location. The location is identified through the edge server information of the connected AP. The performance of the proposed method and the conventional method was compared. As a result of the comparison, the proposed method showed a stable Mobile AR Service. The results of this study, it is expected to contribute to the activation of edge server-based AR mobile services.

• Architectural research
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• 제19권1호
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• pp.1-6
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• 2017

Over the past decade, building information modeling (BIM) has gained a foothold in the construction sector. However, as digital data generated in the virtual space of a computer environment, BIM-based data have an inherent limitation in their application efficacy under field conditions. To overcome this, the present study employs augmented reality (AR) to reduce the discrepancy between the digital data generated in virtual spaces and real-world conditions. We assessed the potential applicability of an AR-based interface by analyzing existing examples of Apple, Google, and Facebook, which reflect the recent developments of technologies focusing on user experience. We then proceeded with an AR study, restricting the scope of application to a mobile environment in which an efficient information transmission between a digital model and real life can take place. Object-oriented software engineering was employed to ensure an efficient implementation of a BIM-based AR system for campus space management (CSM) in a mobile environment. Finally, we conducted a module test to check the reliability of the CSM method by using an AR-based mobile system with a prototype of the model used in university campuses, and extracted and itemized the supplementary requirements for CSM by using BIM tools for running AR applications.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.54-60
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• 2021

AR (Augmented Reality) is a technology that provides virtual content to the real world and provides additional information to objects in real-time through 3D content. In the past, a high-performance device was required to experience AR, but it was possible to implement AR more easily by improving mobile performance and mounting various sensors such as ToF (Time-of-Flight). Also, the importance of mobile augmented reality is growing with the commercialization of high-speed wireless Internet such as 5G. Thus, this paper proposes a system that can provide AR services via GNN (Graph Neural Network) using cameras and sensors on mobile devices. ToF of mobile devices is used to capture depth maps. A 3D point cloud was created using RGB images to distinguish specific colors of objects. Point clouds created with RGB images and Depth Map perform downsampling for smooth communication between mobile and server. Point clouds sent to the server are used for 3D object detection. The detection process determines the class of objects and uses one point in the 3D bounding box as an anchor point. AR contents are provided through app and web through class and anchor of the detected object.