• Title/Summary/Keyword: 모바일 증강 현실

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Client-Centered Mobile Augmented Reality System for Virtual Building Simulation (가상 건축물 시뮬레이션을 위한 클라이언트 중심의 모바일 증강현실 시스템)

  • Kim, Eun-Mi;Lim, Soon-Bum
    • Journal of Korea Multimedia Society
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    • v.11 no.2
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    • pp.228-236
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    • 2008
  • Recently augmented reality technology has been researched to view the virtual shape of buildings before construction or cultural heritages under recovery. Those researches used special devices or markers that are not applicable in long distanced outdoor environment. Also the server had to compute a lot of transformations for the location changes of virtual objects. This paper proposed a mobile augmented reality system that uses GPS and accelerometer sensors in order to compute the virtual object's locations without using markers. The server determines the position and orientation by comparing the GPS data obtained from the client with the predefined 3D object informations in the server. If the server sends the virtual object informations such as the position, orientation and matching information, then the client matches the virtual object on the screen of mobile camera phone. In addition, the client computes the transformations of location change detected by the accelerometer derived from the user's movement without additional connection to the server.

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Interactive Mobile Augmented Reality System using Muscle Sensor and Image-based Localization System through Client-Server Communication (서버/클라이언트 통신을 통한 영상 기반 위치 인식 및 근육 센서를 이용한 상호작용 모바일 증강현실 시스템)

  • Lee, Sungjin;Baik, Davin;Choi, Sangyeon;Hwang, Sung Soo
    • Journal of the HCI Society of Korea
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    • v.13 no.4
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    • pp.15-23
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    • 2018
  • A lot of games are supposed to play through controller operations, such as mouse and keyboard rather than user's physical movement. These games have limitation that causes the user lack of movement. Therefore, this study will solve the problems that these traditional game systems have through the development of a motion-producing system, and provide users more realistic system. It recognizes the user's position in a given space and provides a mobile augmented reality system that interacts with virtual game characters. It uses augmented reality technology to make users feel as if virtual characters exist in real space and it designs a mobile game system that uses armband controllers that interact with virtual characters.

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Study for applying the augmented reality onto postage stamps (우표의 증강현실 적용에 관한 연구)

  • Lee, Ki Ho
    • Cartoon and Animation Studies
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    • s.33
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    • pp.503-529
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    • 2013
  • The commemorative AR postage stamps which are the world first presented at The YEOSU EXPO 2012 has had meaning of communicating with future in this present from a convergence that the most analog medium is using now and that the AR is cutting edge of digital technology. The AR stamps printed 10 kind out of 33 commemorative stamps. These have great significance that is artistic value than that is world first. The applied AR images are not only expressed 3D real images but also artic represented and signifying each stamp images from visualized creativity process, and build 'new art space' that is new concept between on real(analog) and virtual(digital). This study analyzes meaning of images and then makes concept of AR contents design. The processing is designed and considered the meaning of architectures and environments, and the regional specific feature of the Yeosu with surrealistic graphic concept. The 10 of deducted images were expressed after AR coding such as visual arts. This study realized markerless 3D image tracking AR stamps and deducted research result are; the first, it was able to figure out how to realize AR in the process of registering the reference images, coordinating transformation, and hybriding AR on the stamps for the mobile devices. The second, it was able to be seeked a possibility of new virtual exhibition space. The third, it was able to know possibility of satisfaction of immersing with visual formativeness and usability with informativity.

3-D Model-Based Tracking for Mobile Augmented Reality (모바일 증강현실을 위한 3차원 모델기반 카메라 추적)

  • Park, Jungsik;Seo, Byung-Kuk;Park, Jong-Il
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2011.07a
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    • pp.65-68
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    • 2011
  • 본 논문에서는 모바일 증강현실을 실현하기 위한 3차원 모델기반 카메라 추적 기술을 제안한다. 3차원 모델기반 추적 기술은 평면적이지 않은 객체에 적용 가능하며, 특히 텍스처가 없는 환경에서 유용하다. 제안하는 방식은 대상 객체의 3차원 모델정보로부터 영상에서 추출한 에지와의 대응점을 찾고, 대응점의 거리를 최소화하는 카메라 움직임을 추정함으로써 이전 카메라 포즈(위치 및 방향)로부터 현재 포즈가 추적되는 방식이다. 안드로이드 플랫폼의 스마트폰 상에서 제안된 방식으로 카메라 포즈를 추적하고 3차원 가상 콘텐츠를 증강시켜 봄으로써 그 유용성을 확인한다.

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A Proposal of a Mobile Augmented Reality Service Model based on Street Data, and its Implementation (도로데이터 기반의 모바일 증강현실 서비스 모델 제안 및 시스템 구현)

  • Lee, Jeong Hwan;Lee, Jun;Kwon, Yong Jin
    • Spatial Information Research
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    • v.23 no.5
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    • pp.9-19
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    • 2015
  • The popularity of smart devices and Location Based Services (LBSes) is increasing in part due to users demand for personalized information associated with their location. These services provide intuitive and realistic information by adopting Augmented Reality (AR) technology. This technology utilizes various sensors embedded in the mobile devices. However, these services have inherent problems due to the devices small screen size and the complexity of the real world environment; overlapping content on a small screen and placing icons without considering the user's possible movement. In order to solve these problems, this paper proposes a Mobile Augmented Reality Model with the application of Street Data. The model consists of two layers: "Real Space" and "Information Space". In the model, a user creates a query by scanning the nearby street with a camera in real space and searches accessible content along the street through the use of the information space. Furthermore, the results are placed on both sides of the street to solve the issue of Overlapping. Also, the proposed model is implemented for region "Aenigol", and the efficiency and usefulness of the model are verified.

The Effect of Process Oriented Guided Inquiry Learning Using Mobile Augmented Reality on Science Achievement, Science Learning Motivation, and Learning Flow in Chemical bond (화학 결합에서 모바일 증강현실을 이용한 과정기반 안내탐구학습이 과학 학업 성취도, 과학 학습 동기, 학습 몰입감에 미치는 영향)

  • Jeon, Young-Eun;Ji, Joon-Yong;Hong, Hun-Gi
    • Journal of The Korean Association For Science Education
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    • v.42 no.3
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    • pp.357-370
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    • 2022
  • In this paper, we developed an augmented reality learning tool suitable for chemical bond learning and proposed a process-oriented guided inquiry learning using mobile augmented reality (POGIL-MAR) to find out how it affects science achievement, science learning motivation and learning flow. Participants were 139 10th-grade students from a coeducational high school in Gyeonggi-do, and they were randomly assigned to the control group (TL), the treatment group 1 (POGIL), and the treatment group 2 (POGIL-MAR). They learned the concept of the chemical bond from the Integrated Science subject for four class periods. Results of two-way ANCOVA revealed that the POGIL-MAR group scored significantly higher than the other groups in a science achievement test, science learning motivation test, and learning flow test, regardless of their prior science achievement. In addition, in the case of the low-level group, the POGIL-MAR group showed a statistically significant improvement in achievement compared to the TL and POGIL groups. The MANCOVA analysis for sub-factors of science learning motivation show that the POGIL-MAR group had significantly higher scores in intrinsic motivation, career motivation, self-determination, self-efficacy, and grade motivation. In particular, the interaction effect between the teaching and learning method and the level of prior achievement was significant in the intrinsic motivation. Meanwhile, the MANCOVA analysis for sub-factors of learning flow show that the POGIL-MAR group had significantly higher scores in clear goals, unambiguous feedback, action-awareness merging, sense of control, and autotelic experience. Based on the results, educational implications for effective teaching and learning strategy using mobile augmented reality are discussed.

An Efficient Location Based Service based on Mobile Augmented Reality applying Street Data extracted from Digital Map (도로 데이터를 활용한 모바일 증강현실 기반의 효율적인 위치기반 서비스)

  • Lee, Jeong Hwan;Jang, Yong Hee;Kwon, Yong Jin
    • Spatial Information Research
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    • v.21 no.4
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    • pp.63-70
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    • 2013
  • With the increasing use of high-performance mobile devices such as smartphones, users have been able to connect to the Internet anywhere, anytime, so that Location Based Services(LBSes) have been popular among the users in order to obtain personalized information associated with their locations. The services have advanced to provide the information realistically and intuitively by adopting Augmented Reality(AR) technology, where the technology utilizes various sensors embedded in the mobile devices. However, the services have inherent problems due to the small screen size of the mobile devices and the complexity of the real world environment. Overlapping contents on a small screen and user's possible movement should be taken into consideration in displaying the icons on objects that block user's environment such as trees and buildings. The problems mainly happen when the services use only user's location and sensor data to calculate the position of the displayed information. In order to solve the problems, this paper proposes a method that applies street data extracted from a digital map. The method uses the street data as well as the location and direction data to determine contents that are placed on both sides of a virtual street which augments the real street. With scrolling the virtual street, which means a virtual movement, some information far away from the location of the user can be identified without user's actual movement. Also the proposed method is implemented for region "Aenigol", and the efficiency and usefulness of the method is verified.

A Study on Mobile Virtual Training System using Augmented Reality (증강현실 기술을 활용한 모바일 가상훈련 시스템의 연구)

  • Kim, Yu-Doo;Lee, Seon-Ung;Moon, Il-Young
    • Journal of Advanced Navigation Technology
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    • v.15 no.6
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    • pp.1047-1052
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    • 2011
  • Various services are created using mobile networks after mobile devices such as smart phones and tablet PCs are propagated rapidly. However, the contents of smart devices are not enough diversity because they depend on games and messaging services primarily. In this paper, we described the study have progressed based on mobile devices and networks using augmented reality technologies about virtual education system.

Study on Establishment of Deoksugung Palace, Tourist Information Services using Augmented Reality(AR) Technology (증강현실(AR) 기술을 이용한 덕수궁 관광안내서비스 구축방안 연구)

  • Oh, Sung-hwan;Kim, Ki-duk
    • Korean Journal of Heritage: History & Science
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    • v.46 no.2
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    • pp.26-45
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    • 2013
  • Sudden increase exceeding 30million in the number of smart phone users, and rising interest in the technology of augmented reality, is now trying to combine it with AR technology in other areas very much. The field of cultural heritage, which has been constructed by the Internet and 3D technology, is not unusual and this field is now rapidly changing thanks to the AR technology which can make users experience cultural heritage with high reality. The Palaces in Seoul, however, use fragmentary tools of information - lack of heritage commentators, leaflet, etc, even though the number of visitors is gradually increasing. Therefore, three-dimensional and comprehensive cultural heritage information service is needed with the guidance in the mobile era. This study utilizes the AR technology for building the Deoksugung Tourist Information Service Application(App.) applying the markerless-based recognition technology which is a more advanced tool than the location-based AR technology. This new AR technology can switch perceived real images such as the tablet of the King in the Palace of in the real world, patterns and pedestals into virtual world, which can reproduce the damaged cultural assets as 3D. This also composes photos of the past with the current buildings, which can increase people's interest and absorption of the contents, and helps them understand and be aware of Korean traditional culture and cultural heritage effectively. In addition, convergence between IT new technology, Augmented Reality(AR) and humanities through storytelling based implementation of cultural heritage in smart phone is attempted to demonstrate that there is strength in which augmented reality technique exerts infinite creativity based on actual reality world.

Color-Histogram Descriptor for Augmented Reality on Non-Textured Objects (텍스쳐가 없는 환경에서 증강현실을 구현하기 위한 색상 히스토그램 지역 서술자)

  • Kim, Kang-Soo;Park, Jung-Sik;Seo, Byung-Kuk;Park, Jong-Il
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2010.07a
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    • pp.201-204
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    • 2010
  • 물체 인식 및 추적 기술은 기계가 영상 정보를 기반으로 주변을 인지하고 정황을 파악하는 컴퓨터 비전 분야의 매우 중요한 연구 영역 중 하나이다. 현재까지 이러한 물체 인식/추적에 대한 다양한 연구들이 있어 왔고, 최근 증강현실에 대한 높은 관심을 바탕으로 증강현실을 위한 영상 정보 기반의 정확하고 정교한 추적 기술에 대한 관심 또한 매우 높아졌다. 본 논문에서는 텍스쳐가 없는 단색의 블록에 대해 증강현실을 실현하기 위한 물체 추적 방식을 제안한다. 제안하는 방식은 다수의 블록들을 조합하여 구성하고, 이 조합으로부터 추출한 특징점에 색상 정보 기반의 지역 서술자를 정의함으로써 사전에 정의된 서술자와 의 비교를 통해 물체를 추적하는 방식이다. 제안된 추적 방식은 사전에 기준이 되는 지역 서술자를 정의함에 있어서 기준 영상에 다양한 어파인 변환을 적용함으로써 카메라와 대상물과의 각도가 큰 입력 영상에 대해서도 추적에 실패하지 않는다. 실험을 통해 제안된 방식을 집 모양으로 구성한 블록 조합에 적용하여 3차원 가상 콘텐츠를 증강시켜 봄으로써 제안된 방식의 유용성을 확인하였다. 제안된 방식은 텍스쳐가 없는 환경에서 사용자의 상호작용으로 텍스쳐를 구성하고 이를 추적하는 방식으로 향후 아이들을 위한 교육 프로그램, 모바일 기기에서의 응용 프로그램 등으로 적용 가능하다.

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