• The Journal of the Korea Contents Association
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• v.10 no.12
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• pp.77-83
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• 2010

Recently, IT-based environment is changing rapidly as changing in web services platform, evolution of cloud computing environments and expanding the base of a smart market. Accordingly, monitoring development of environment is changing quickly. So a customizable SaaS-based monitoring tool is required to provide monitoring services. It has to support a variety of environmental monitoring and a resource managers with requested information, and by an enhanced monitoring framework in clouding environment of management system. In this paper, the 3D viewer for the management of sensor node management system was designed and built. Through the 3D viewer by enhancing the accessibility and visibility, the sensor network will allow resources to be used efficiently.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.187-194
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• 2020

This study present to Framework & R&D direction of the 3d printing Integrated Control & Monitoring System. To ensure this purpose, we developed integrated 3d printing control system Framework for DED & PBF and we introduce 4 monitoring system include photo diode, gas flow, acoustic and spectrometer sensors. For this study, we utilize metal 3d printing system from Conception., OKE Tech and DE&T who are still developing Metal 3D Printing Technology since 2017. In the result, we represent the latest 3D Printing Control and Monitoring System for the next 3D Printing researcher and we hope this study will be used as a basic reference and data for Cooperation between mechanic, electronic and material fields.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.49 no.2
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• pp.13-19
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• 2012

The techniques of 3d image processing have broadly used in the areas including movies, games, performances, exhibitions. In addition, increasing demands for practical uses have gradually extended to the areas of architecture, medicine, nuclear power plant. However, dominant techniques for 3d image processing seem to depend on multi-camera in which two stereo images are merged into one image. Also the pipeline has limitations to provide real-time 3d viewer in ubiquitous computing. It is not able to be applicable onto most general screens as well. In addition, the techniques can be utilized for the real-time 3d game play without a particular monitor or convertor. Hence, the research presented here is to aim at developing an efficient real-time 3d viewer using only mono camera which do not need post processing for editing as well.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.264-269
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• 2007

본 논문에서는 감각형 객체(Tangible Object)를 이용한 테이블에서의 2D/3D 상호작용 시스템을 제안한다. 제안된 시스템은 기존의 ARTable[1]에 직육면체 형태의 감각형 객체와 카메라가 장착된 이동형 모니터를 추가하여 제작되었다. 감각형 객체는 모든 면에 ARToolkit[3]에서 쓰이는 마커가 부착되어 있으며, 내부에는 진동자와 불루투스 통신 모듈이 삽입되어 있다. 또한 카메라가 달린 모니터는 모니터 암에 연결되어 사용자가 이동하며 ARTable 상판을 관측할 수 있도록 부착되어 있다. 이 시스템를 이용하여 사용자는 디스플레이형 테이블인 ARTable 위에서 가상공간을 네비게이션(2D 상호작용)할 때 정확한 길을 찾아가기 위한 도움을 받을 수 있을 뿐만 아니라, 증강현실 환경에서 가상객체와 3D 상호작용을 할 수 있다. 또한 진동 모듈과 이를 제어하기 위한 블루투스 모듈이 내장 되어있어, 특정한 이벤트 발생시 진동자를 이용하여 사용자에게 촉각 감응 효과를 줄 수 있다. 제안된 시스템은 교육, 엔터테이먼트, 등 다양한 분야에서 사용될 수 있다.

• The Optical Journal
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• s.128
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• pp.38-41
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• 2010

HMD(Head mounted Display)는 보안경이나 헬멧 형태로 눈앞의 지근거리에 초점이 형성된 가상스크린을 보는 안경형 모니터 장치로서 예전에는 군사용 시뮬레이션이나 가상현실(VR-Virtual Reality)을 실현하기 위해 개발되었으며, 양쪽 눈의 근접한 유치에 설치된 1인치 이하의 LCD, OLED, MEMS panel 등 마이크로 디스플레이에서 발생되는 이미지를 광학시스템을 통해 확대하여 대형 가상화면을 형성한다. IT 산업의 비약적인 발전에 힘입어 휴대용 동영상 및 모바일 정보검색, 3D의 시대가 대두됨에 따라 휴대폰이나 PMP의 작은 화면으로는 만족하지 못하는 소비자의 수요에 적합한 개인 휴대용 모니터 장치로, 3D를 구현하는 안경형 모니터로서 향후 크게 형성될 모바일 산업의 핵심제품이 될 전망이다.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.39 no.3
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• pp.23-35
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• 2002

Gaze detection is to locate the position on a monitor screen where a user is looking. In our work, we implement it with a computer vision system setting a single camera above a monitor and a user moves (rotates and/or translates) his face to gaze at a different position on the monitor. To detect the gaze position, we locate facial region and facial features(both eyes, nostrils and lip corners) automatically in 2D camera images. From the movement of feature points detected in starting images, we can compute the initial 3D positions of those features by camera calibration and parameter estimation algorithm. Then, when a user moves(rotates and/or translates) his face in order to gaze at one position on a monitor, the moved 3D positions of those features can be computed from 3D rotation and translation estimation and affine transform. Finally, the gaze position on a monitor is computed from the normal vector of the plane determined by those moved 3D positions of features. As experimental results, we can obtain the gaze position on a monitor(19inches) and the gaze position accuracy between the computed positions and the real ones is about 2.01 inches of RMS error.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39B no.9
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• pp.590-597
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• 2014

This paper proposes multi-camera system that relies on 3D views for panoramic video and distribution method about panoramic video generation algorithm by using cloud computing. The proposed monitoring system monitors the projected 3D model view, instead of individual 2D views, to detect image distortions. This can minimize compensation errors caused by parallax, thereby improving the quality of the resulting panoramic video. Panoramic video generation algorithm can be divided into registration part and compositing part. Therefore we propose off-loading method of these parts with cloud computing for panoramic video service.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.28 no.6
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• pp.669-676
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• 2010

Visualization requires for effective analysis of the spatial data collected by various sensors. The best way to convey 3D digital spatial information which is modeling of the real world to the users, realistic 3D visualization and display technology. Since most of the display is based on 2D or 2.5D projection to the plane, there is limitation in representing real world in 3D space. In this paper, data from airborne LiDAR for topographic mapping, Flashi-LiDAR as emerging sensor with great potential to 3D data acquisition, and multibeam echo-sounder for underwater measurement, were stereoscopically visualized. 3D monitors are getting popular and could be information media and platform in geoinformatics. Therefore, study on creating 3D stereoscopic contents of spatial information is essential for new technology of stereo viewing systems.

• Journal of the Geological Society of Korea
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• v.54 no.5
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• pp.501-511
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• 2018

Geoparks are worth preserving in an environmentally and heritage. Monitoring and public attention are essential for the conservation and protection of geoparks. The use of Unmanned Aerial Vehicles and the Structure from Motion algorithm enables effective monitoring of geoparks that are difficult to manage due to their wide range of manpower, and various spatial data derived from SfM can be utilized to improve awareness of geoparks that have been lacking. In order to prove this, firstly, we created the 3D spatial data by using the UAV and the SfM algorithm, which is one of the National geoparks of the Hantan-Imjin River area. Using this 3D data for Virtual Reality and 3D printing. After that, we verified the possibility of promoting the geopark through a simple online survey. Finally, we propose a method to utilize all the generated data from each step to promote and research for geoparks.

• Proceedings of the KSEEG Conference
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• 2001.05a
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• pp.94-101
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• 2001

이 연구에서는, PC 모니터와 3차원 가시화 장치인 Shutter Glasses를 이용하여 실시간 (real time)으로 3차원 영상을 구현할 수 있는 방법을 개발하였다. VRML (Virtual Reality Model Language)을 이용하여 간단한 입체 게임을 구성한 후, 3명의 학생을 대상으로 인터넷을 통하여 실시간으로 실험한 결과, PC에서 동기화 이 중 가시화 방식으로 생성한 3차원 입체영상은 모니터의 전후 방향으로 돌출되거나 함몰되는 현상을 나타냈다. 따라서, 실시간으로 3차원 영상을 구현할 수 있는 기초 이론과 방법을 개발할 수 있었다.