• Title/Summary/Keyword: 조명시스템

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Virtual Advertisement System Considering Lighting (조명을 고려한 가상광고 시스템)

  • 김인문;박혁래;박종일
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2002.11a
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    • pp.265-268
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    • 2002

  • 가상광고는 실제 영상에 존재하지 않는 정보를 추가함으로써 영상의 정보 제시 능력을 향상시키는 것으로 폭넓고 다양한 정보가 영상에 더해질 수 있다. 이러한 가상광고를 보다 현실감 있게 구현하기 위해서는 여러 가지 환경이 갖추어져야 하는데, 그 중 하나가 사물에 대한 조명 효과이다. 본 논문에서는 가상광고 영상으로부터 조명을 고려한 그래픽 정보를 삽입함으로서 좀 더 현실감 있는 증강현실을 구현하고자 한다. 제안된 방법은 카메라로 촬영한 영상으로부터 3차원적인 위치정보를 알고 있는 고정된 4개 이상의 특징점 추출 및 추적을 통하여 카메라의 프로젝션(Projection) 행렬을 복원하고, 이를 이용하여 범용적인 크로마키(Chroma-Key) 기법으로 영상합성을 하였다. 행렬복원 과정에서는 카메라의 프로젝션 행렬로부터 QR-Decomposition 을 통해 카메라의 회전과 이동 성분을 분리해 내어 가상 물체가 카메라에 의해 움직임 보정을 받을 수 있도록 하였다. 그리고 인의의 위치에 조명을 주었을 때 생기는 변화를 그래픽에 반영하여 실사와 합성하는 실시간 시스템을 구축하고 실험으로 확인하였다.

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LED lighting control system using the variable FOV according to movements of stage actors based on multi sensor (멀티센서기반 무대배우 이동에 따른 FOV가변형 LED조명 제어 시스템)

  • Koo, EunJa;Cha, Jaesang;Kim, Daeho;Park, Myungsook
    • Journal of Satellite, Information and Communications
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    • v.7 no.3
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    • pp.16-21
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    • 2012

  • Recently, an importance of culture industry has been emphasized through an increased income level, spare time and changed values of modern people. And demands of the performance, arts, exhibit are steadily being increased. However the stage equipment depends on foreign manufactures on account of the inactive domestic technical skills. Especially in the lighting direction part, it is essential to control the lighting source and detect the moving line of actors but it generally uses the manual control type and realization of actor's moving line regardless of existing IT-based technologies. Also the system operation of existing sensor-based tracking and detecting technologies depends on the main lighting source of the stage. Therefore, this paper proposed LED lighting control system using the variable FOV and multi sensor-based tracking algorithm, which are possible to efficiently track the stage actors and direct the stage lights. Also we demonstrated the practicality and possibility of realization through the integrated experiment of the proposed system and implementation of the salient hardware, software. Additionally, the usefulness of proposed system was demonstrated using performance simulations and actual measurements of implemented sensor output.

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A study on implementation of integrated control system for LED communication based on micro controller (마이크로 콘트롤러에 기반한 LED 조명 통신 종합 제어 시스템 구현에 관한 연구)

  • Lee, JungHoon;Kim, Chan;Cha, Jaesang
    • Journal of Satellite, Information and Communications
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    • v.7 no.2
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    • pp.54-58
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    • 2012

  • In this paper, we implemented total monitoring system in which LED light turned on only when user detected and LED light turned out only when user disappeared. This system is composed of two modules, one is HW board based on Micro Controller and the other is SW control system based on Web server. Micro controller board is based on ATMega2560 chip which is connected with Infra Red and Ultra sonic sensors. Web based monitoring system was designed can be used in smart device. The validity of this monitoring system was proved by integration test of two modules.

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Evaluation on the Characteristics of Daylight Distributions of Grating Louver System in a Pair Glass by Computer Simulation (복층유리 격자루버시스템의 주광특성에 관한 시뮬레이션 평가)

  • Park, Byoung-Chul;Choi, An-Seop
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.12
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    • pp.1-9
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    • 2009

  • A recent research trend on the Daylight Responsive Dimming Systems, using available daylight for energy savings, is to integrate automated roller shading systems and venetian blind systems which are vertically controlling daylight to indoor based on sun profile angle. Therefore, this paper suggests Grating Louver System into a pair glass as a new shading system, which can control daylight vertically and horizontally. The optimized spacing of louvers, which is to block direct sunlight into a space, was calculated. And then, the system was simulated for analysis and evaluation of characteristics of daylight by Desktop Radiance 2.0.

  • https://doi.org/10.5207/JIEIE.2009.23.12.001 인용 PDF KSCI