• Journal of Information Management
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• v.41 no.4
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• pp.41-67
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• 2010

Augmented reality technology was invented for military purposes at the beginning. But the development of wireless and location based technology in 2000s makes AR services reach the age of innovation. Especially, it attracts attention as a media which enriches our perception. There is a potential that it can extend the virtual information in the real world from optical sense to auditory, tactile, and olfactory sense. This study proposed the interactive information service system and method based on AR. To do it, technical background on AR was analyzed and a method to apply the technology was examined. Especially, as a eco service, this study proposed new information service using 2D bar code in a library for user need and convenience in ubiquitous environment. The proposed service system can optimize practical utilization of information resources in virtual and real reality as consolidating analog and digital resources in a library.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.765-769
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• 2009

The Augmented Reality of existing for the interaction which the object and background is smooth used the data glove or marker. It is inconvenient to a use and it occurs the result of immersion feeling decrease. Immersion it will wind from Augmented Reality and the hazard which it strengthens the removal of the additional entry device which stands is necessary. It recognizes the space coordinates which is accurate even from the condition where the hazard marker which will reach does not attach in necessity. Immersion feeling improvement from Augmented Reality wearing the hazard additional entry device it proposes the space coordinate creation technique of the virtuality description below for a interaction without from the present paper. The method which is proposed the image which it acquires the object of virtuality reflected at 2D space and the characteristic line about under extracting the space coordinate which reflects about under calculating it reflected. The application is possible in markerless Augmented Reality and the mobile Augmented Reality.

• The Journal of the Korea Contents Association
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• v.18 no.6
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• pp.122-130
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• 2018

As smart tourism is gaining more attention, there are increasing attempts to make use of augmented reality(AR) in tourism industry. However, existing AR-based tourism contents are only limited to the 'designated' cultural heritage, overlooking the value of undesignated cultural heritage lost in the past few decades of development era. This hinders expanding the scope of tourism contents and leads to the production of banal and similar contents. Given that, our study has developed tourism contents based on , an AR-based mobile application that enables participants to virtually visit the historical sites lost in the development era. The Chungmuro area, which the app is named after, is unique in character. The area has been famous for movie making for over 30 years until the '90s. It is abundant with movie-related cultural resources such as theaters and print shops, which makes the place where people wants to feel the glorious past. Through the app, participants are able to walk along the historic trail and take pictures at five virtual historic spots, among many others. We also examined participants' level of satisfaction and overall tourism experience. By taking the result into account, we hope that the AR-based tourism contents will increase in the future.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.11a
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• pp.243-246
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• 2009

본 논문에서는 스테레오 카메라를 이용하여 3차원 공간을 인식한 후 판별된 손동작에 의해 3차원 객체를 제어 할 수 있는 실시간 시스템을 구현 하고자 한다. 스테레오 카메라를 통해 획득한 현재 영상에서 배경 영상을 제거한 후 피부색의 특징을 이용한 이진화를 수행하여 손의 영역을 찾고 관심 영역에 대해서 변이(disparity)를 추정하여 손 영역의 깊이정보를 추가한 3차원 좌표를 실시간으로 얻을 수 있다. 손의 특징 점을 이용하여 손목을 찾고 손동작을 판별한다. 손을 관심 역역으로 설정한 시스템에서 3차원 공간 좌표는 실시간으로 사용자의 손의 움직임에 의해 획득되고 이를 가상과 현실이 합쳐진 3차원 증강현실과의 연동을 하게 한다. 실험을 통해 제안하는 실시간 시스템은 손과 카메라의 각도와 손가락의 개수에 따라 평균 손동작 인식률이 83%가 되는 것을 검증하였다.

• Journal of the Korea Society of Computer and Information
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• v.17 no.7
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• pp.155-166
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• 2012

This paper proposes a new method of estimating the hand pose through the Mean-Shift tracking algorithm using the fusion of color and depth information for marker-less augmented reality. On marker-less augmented reality, the most of previous studies detect the hand region using the skin color from simple experimental background. Because finger features should be detected on the hand, the hand pose that can be measured from cameras is restricted considerably. However, the proposed method can easily detect the hand pose from complex background through the new Mean-Shift tracking method using the fusion of the color and depth information from 3D sensor. The proposed method of estimating the hand pose uses the gravity point and two random points on the hand without largely constraints. The proposed Mean-Shift tracking method has about 50 pixels error less than general tracking method just using color value. The augmented reality experiment of the proposed method shows results of its performance being as good as marker based one on the complex background.

• Journal of Navigation and Port Research
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• v.40 no.4
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• pp.183-188
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• 2016

Many maritime accidents have been caused by human-error including such things as inadequate watch keeping and/or mistakes in ship handling. Also, new navigational equipment has been developed using IT technology to provide various information for safe navigation. Despite these efforts, the reduction of maritime accidents has not occurred to the degree expected because, navigational equipment provides too much information, and this information is not well organized, such that users feel it to be complicated rather than helpful. In this point of view, the method of representation of navigational information is more important than the quantity of that information and research is required on the representation of information to make that information more easily understood and to allow decisions to be made correctly and promptly. In this paper, we adopt Augmented Reality (AR) technologies for the representation of information. AR is a 3D computer graphics technology that blends virtual reality and the real world. Recently, this technology has been widely applied in our daily lives because it can provide information more effectively to users. Therefore, we propose a new concept, a navigational system based on AR technology; we review experimental results from a ship-handling simulator and from an open sea test to verify the efficiency of the proposed system.

• Journal of the Korea Society of Computer and Information
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• v.16 no.6
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• pp.79-88
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• 2011

In this paper, We propose real-time sound editing and playback systems which is based on Augmented Reality. The proposed system are composed with music maker which is based on AR maker and music board. By using music marker's contents, the proposed system selects the kinds of musical instruments and pre-defined midi track and by calculating the relative location of music marker on 2-dimensional plane, we set the spatial relative parameter in midi track. For performance evaluation, we check the jitter value of in various resolutions by using CAM which supports $1600{\pm}1200$ as the maximum resolution. As a result, when we set the configuration value of CAM as $860{\pm}600$ pixels and process two frames per minute, the success ratio of recognizing music markers and jitter values are accegnable. It can be utilized in the fields of alternative cmacine which is based on music and also be utilized in the educational aspects because child or elderly who don't know enough musical theory can easily handle it.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.11a
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• pp.273-276
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• 2006

본 논문에서는 일반적인 수족관에서 물고기를 관찰하는데 있어서 관찰자가 빠르고 효율적으로 물고기에 대한 정보를 얻을 수 있는 방법을 제안하고자 한다. 여러 종의 물고기가 살고 있는 수족관 환경에서 처음 보는 관찰자과 쉽게 물고기에 대한 정보를 얻기는 힘들다. 이러한 제약을 효과적으로 개선하기 위하여 반 투영 거울을 사용하는 공간 증강 현실을 위한 영상출력 기법을 이용한다. 이때 피사체의 위치 정보를 얻기 위해 배경인 수족관영상과 피사체인 물고기영상을 분리한 후 물고기의 깊이 정보 값을 추출하기 위하여 호모그래피 행렬을 이용하고 보정된 이미지를 계산 한다. 실험결과 본 논문에서 제안한 방법을 통해 구축한 이 시스템으로 관찰자는 각각의 물고기들에 대한 정보를 반응형 Annotation으로 쉽게 얻을 수 있었다.

• The Journal of the Convergence on Culture Technology
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• v.5 no.1
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• pp.205-210
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• 2019

Alongside the development of communication technologies such as smart phone, 5G, advertisements which have been regarded as nexus of marketing behaviors are treated as surplus entities in our society now. Ad marketers have been focusing on storytelling advertisements via SNS or similar web-services. We are facing another big media changes such as Virtual Reality, Augmented Reality. Especially the current study probes Mixed Reality as the potential key of new storytelling brand marketing with discussing directions and insights based on the narrative transportation theory.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.48 no.4
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• pp.49-58
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• 2011

Typically, vision-based AR systems operate on the basis of prior knowledge of the environment such as a square marker. The traditional marker-based AR system has a limitation that the marker has to be located in the sensing range. Therefore, there have been considerable research efforts for the techniques known as real-time camera tracking, in which the system attempts to add unknown 3D features to its feature map, and these then provide registration even when the reference map is out of the sensing range. In this paper, we describe a real-time camera tracking framework specifically designed to track a monocular camera in a desktop workspace. Basic idea of the proposed scheme is that a real-time camera tracking is achieved on the basis of a plane tracking algorithm. Also we suggest a method for re-detecting features to maintain registration of virtual objects. The proposed method can cope with the problem that the features cannot be tracked, when they go out of the sensing range. The main advantage of the proposed system are not only low computational cost but also convenient. It can be applicable to an augmented reality system for mobile computing environment.