• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2020년도 제61차 동계학술대회논문집 28권1호
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• pp.167-168
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• 2020

본 논문에서 제안하는 모바일 어플리케이션은 증강현실 기술을 적용한 정보공유 플랫폼으로 일상 혹은 특별한 여정에서 찍은 사진에 대한 확장 정보를 제공한다. 이 정보들을 통해 자신의 위치를 기준으로 지역을 구체적으로 알아볼 수 있으며 개인의 지역명소를 찾아 공유한다. 누구나 친숙하게 활용할 수 있도록 개발된 모바일 어플리케이션은 지역경제 및 전통시장 활성화에 대한 솔루션으로 제공이 가능하다.

• 한국콘텐츠학회지
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• 제14권4호
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• pp.34-38
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• 2016

• 복식
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• 제62권6호
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• pp.139-153
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• 2012

To prolong the rapid progress of IT, it is necessary to develop contents through IT convergence among the existing goods & service and process areas to create new added-values. In particular, the wedding dress industry has infinite potential in utilizing various contents like virtual fitting by connecting with newly compelling IT areas such as smart phones, Augmented Reality (AR), and application contents. In the meantime, a large scale of the wedding industry has gained global competitiveness due to consulting expertise and the influence of the Korean Wave, whereas most small-sized wedding dress shops in Korea fall short of developing wedding dress designs and receiving relevant information. Accordingly, the purpose of this study was to help brides who have difficulties in choosing a wedding dress by decreasing their time and effort by providing wedding dress designs and information, according their desired image, body type, and circumstances through the utilization of virtual fitting application contents. Not only that, this study aims to diversify and specialize in wedding information and to help users to set a guideline for wedding dresses that are most suitable for them. Moreover, this study has an academic meaning in proposing an interdisciplinary convergence research model through the study of wedding dress design development, AR, and application contents utilization.

• 대한산업공학회지
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• 제43권3호
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• pp.213-228
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• 2017

Augmented reality (AR), which is a live direct or indirect view of a real-world environment combined with virtual objects, has grown rapidly owing to its wide application potential. Despite the growth of AR technology and its increased attraction, however, little attention has been paid to identifying sub-technologies of this technology and their evolving trends based on the data encompassing industrial competition. In the present study, therefore we collect AR-related patents granted until 2015 and then identify technology topics constituting AR technology by applying topic modeling to the patents' textual data. Subsequently, this study determines dynamic evolving trends with respect to those identified technology topics using indicators and maps based on the technology topics' patents and citations. The contributions of this study are twofold; it provides an overall understanding of AR technology's evolving trends based on text mining of AR patents and will assist technology experts in academia and industry in determining further R&D in the near future.

• ETRI Journal
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• 제38권2호
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• pp.337-346
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• 2016

We propose a data-driven kinematic control method for a robotic spatial augmented reality (RSAR) system. We assume a scenario where a robotic device and a projector-camera unit (PCU) are assembled in an ad hoc manner with loose kinematic specifications, which hinders the application of a conventional kinematic control method based on the exact link and joint specifications. In the proposed method, the kinematic relation between a PCU and joints is represented as a set of B-spline surfaces based on sample data rather than analytic or differential equations. The sampling process, which automatically records the values of joint angles and the corresponding external parameters of a PCU, is performed as an off-line process when an RSAR system is installed. In an on-line process, an external parameter of a PCU at a certain joint configuration, which is directly readable from motors, can be computed by evaluating the pre-built B-spline surfaces. We provide details of the proposed method and validate the model through a comparison with an analytic RSAR model with synthetic noises to simulate assembly errors.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권6호
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• pp.2289-2301
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• 2015

Mobile devices are becoming powerful enough to realize augmented reality (AR) application. This paper introduces two AR methods to estimate an environmental illumination distribution of a scene. In the first method, we extract the lighting direction and intensity from input images captured with a front-side camera of a mobile device, using its orientation sensor. The second method extracts shadow regions cast by three dimensional (3D) AR marker of known shape and size. Because previous methods examine per pixel shadow intensity, their performances are much affected by the number of sampling points, positions, and threshold values. By using a simple binary operation between the previously clustered shadow regions and the threshold real shadow regions, we can compute efficiently their relative area proportions according to threshold values. This area-based method can overcome point sampling problem and threshold value selection. Experiment results demonstrate that the proposed methods generate natural image with multiple smooth shadows in real-time.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권8호
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• pp.3090-3102
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• 2015

The accuracy of an augmented reality (AR) application is highly dependent on the resolution of the object's image and the device's computational processing capability. Naturally, a mobile smart device equipped with a high-resolution camera becomes the best platform for portable AR services. AR applications require significant energy consumption and very fast response time, which are big burdens to the smart device. However, there are very few ways to overcome these burdens. Computation offloading via mobile cloud computing has the potential to provide energy savings and enhance the performance of applications executed on smart devices. Therefore, in this paper, adaptive mobile computation offloading of mobile AR applications is considered in order to determine optimal offloading points that satisfy the required quality of experience (QoE) while consuming minimum energy of the smart device. AR feature extraction based on SURF algorithm is partitioned into sub-stages in order to determine the optimal AR cloud computational offloading point based on conditions of the smart device, wireless and wired networks, and AR service cloud servers. Tradeoffs in energy savings and processing time are explored also taking network congestion and server load conditions into account.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권2호
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• pp.982-1004
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• 2017

The recent advances in the field of augmented reality (AR) have shown that the technology is a fundamental part of modern immersive interactive systems for the achievement of user engagement and a dynamic user experience. This survey paper presents the descriptions of a variety of the new AR explorations, and the issues that are relevant to the contemporary development of the fundamental technologies and applications are discussed. Most of the literature regarding the pertinent topics-taxonomy, the core tracking and sensing technologies, the hardware and software platforms, and the domain-specific applications-are then chronologically surveyed, and in varying detail, this is supplemented with the cited papers. This paper portrays the diversity of the research regarding the AR field together with an overview of the benefits and the limitations of the competing and complementary technologies.

• 스마트미디어저널
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• 제5권1호
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• pp.122-129
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• 2016

최근 증강현실 기술은 스마트폰 증가추세에 따라 사용자 중심의 상호작용을 지원하는 형태로 발전하고 있다. 논문에서 우리는 관광지 사물인식 기술과 사용자의 위치 정보를 이용하여 실감체험이 가능한 어플리케이션을 구현하였다. 개발 시스템은 스마트폰의 GPS와 비콘 정보를 이용하여 사용자와 관광지 사물의 현 위치를 파악한 후, 두 지점간의 거리와 방향을 계산하여 해당 관광지의 실감체험 콘텐츠를 제공한다. 실감체험 앱을 통하여 우리는 제주를 찾는 관광객들에게 제주의 문화에 대한 이해와 감동을 주는 한편, 무명 관광지의 자원화 가능성을 높이고, 제주 관광의 이미지를 개선하는 효과를 기대할 수 있다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.87-89
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• 2019

기존의 문화재 의무교육과정은 흥미와 가시성 측면의 부족함으로 인해 교육적인 효과를 기대하기 어려운 측면이 있다. 본 연구에서는 4차산업혁명 시대를 맞아 주목 받고 있는 증강현실의 다중마커 인식 기술을 기반으로 문화재 3차원 데이터를 활용한 응용콘텐츠 및 교구재를 제작하여 대중적으로 문화재를 즐기며 학습 할 수 있도록 하는 증강현실 어플리케이션을 제안한다. 다수의 마커를 인식 가능한 다중마커 기술의 콘텐츠의 경우 다양한 이벤트 추가와 연출력을 강화할 수 있다. 향후 제안하는 증강현실 앱은 문화재를 활용한 다양한 교육용 콘텐츠 제작기술 연구에 활용될 것이라 사료된다.