• Title/Summary/Keyword: camera control

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Development of Motion Control Camera Design Based on Wires with Anti-sway Method

  • Kim, Tae-Rim;Jung, Sung-Young;Baek, Gyeong-Dong;Kim, Sung-Shin
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.10 no.1
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    • pp.25-30
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    • 2010
  • This paper is proposed about three axis motion control camera design method based on wires. Original motion control camera consists of track, boom, L-Head, Camera and so on and is enormous and expensive. But proposed motion control camera adjusts wire length using encoders and motors. And position control use position based straight line of straight-line move method for moving precise position. Proposed simple design is able to use various place and inexpensive than original motion control camera. But, camera was vibrated and rotated due to basic property of wire. So we proposed solutions that connected method of wire and using a tensional object for reducing rotation. For proposed algorithm verification, we realized three axis motion control camera based on wire and measured oscillation while moving same trace. We confirmed the results that standard deviation of oscillation was reduced 4.93 degree than before design method.

Vergence control of horizontal moving axis stereo camera using lens focusing (수평 이동식 스테레오 카메라의 초점을 이용한 주시각 제어 연구)

  • 박순용;최영수;이용범
    • 제어로봇시스템학회:학술대회논문집
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    • 1996.10b
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    • pp.403-406
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    • 1996
  • In this paper, the geometry between horizontal and vertical movement of lens is studied for automatic vergence control of horizontal moving axis stereo camera. When the disparity of stereo remains contant, the horizontal movement of camera lens for image disparity and the vertical movement for image focus have linear geometry. Using this linearity, we can control the vergence of stereo camera only by focusing of stereo camera lens.

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Design and Implementation of Control Program for EO/IR Camera mounted on Multi-Purpose Unmanned Helicopter

  • Ahn, MyeongGi;Seong, KilYoung;Lee, JongHun;Kim, JaeKyung
    • Journal of Aerospace System Engineering
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    • v.15 no.6
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    • pp.72-77
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    • 2021
  • This paper proposes a design and development plan for a control program for the MX-10 EO/IR camera. This camera is a piece of mission equipment mounted on the multi-purpose unmanned helicopter (MPUH) system. Operators must be able to control the necessary functions of the camera to perform their assigned tasks. To achieve this, the function to control the camera was analyzed, and a control program was developed. In addition, the control program was linked to a joystick for convenient operation of the camera by the operator.

Control of an Underwater Stereo Camera Embedded in a Single Canister Capable of Measuring Distance (거리측정이 가능한 단동형 수중 스테레오 카메라의 제어)

  • 이판묵;전봉환;이종무
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2000.10a
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    • pp.90-95
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    • 2000
  • This paper presents the vergence control of a parallel stereo camera and its application to underwater stereo camera to enhance the working efficiency of underwater vehicles that equips with manipulators in seabed operation. The stereo camera consists of two parallel lenses mounted on a lateral moving base and two CCD cameras mounted on a longitudinal moving base, which is embedded in a small pressure canister for underwater application. Because the lateral shift is related to the backward shift with a nonlinear relation, only one control input is needed to control the vergence and focus of the camera with a special driving device. We can get a clear stereo vision with the camera for all the range of objects in air and in water, especially in short range objects. The control system of the camera is so simple that we are able to realize a small stereo camera system and to apply it to a stereo vision system for underwater vehicles. This paper also shows how to acquire the distance information of an underwater object with this stereo camera. Whenever we focus on an underwater object with the camera, we can obtain the three-dimensional images and the distance information in real-time.

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Control of an Underwater Stereo Camera Embedded in a Single Canister Capable of Measuring Distance (거리측정이 가능한 단동형 수중 스테레오 카메라의 제어)

  • 이판묵;전봉환;이종무
    • Journal of Ocean Engineering and Technology
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    • v.15 no.1
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    • pp.79-84
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    • 2001
  • This paper present the control of the image disparity of a parallel stereo camera and its application to an underwater stereo camera to enhance the working efficiency of underwater vehicles that are equiped with manipulators in seabed operation. The stereo camera consists of two parallel lenses mounted on a lateral moving base and two CCD cameras mounted on a longitudinal moving base, which is embedded in a small pressure canister for underwater application. Because the lateral shift is related to the backward shift with a nonlinear relation, only one control input is needed to control the vergence and focus of the camera with a special driving device. We can get clear stereo vision with the camera for all the range of objects in air and in water, especially in short range object. The control system of the camera is so simple that we are able to realize a small stereo camera system and apply it to a stereo vision system for underwater vehicles. This paper also shows how to acquire the distance information of an underwater object with this stereo camera. Whenever we focus on an underwater object with the camera, we can obtain three-dimensional images and distance information in real-time.

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Development of a remote control camera system based on internet (인터넷기반의 원격제어 카메라 시스템 개발)

  • 최기훈;김영탁
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.10a
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    • pp.504-506
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    • 1997
  • CCD camera is usually used for monitoring device. In most cases, he monitoring is performed from long distance. In this study, a camera system controlled through internet is developed. Using the system, not only we can get image information in real time but also we can control the orientation of the camera from long distance. Furthermore wireless communication is carried out between the camera and the server computer for verity of the application.

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Disparity compensation for vergence control of active stereo camera (배경시차 보정을 이용한 스테레오 시각장치의 주시각제어)

  • 박순용;이용범;진성일
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.34S no.9
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    • pp.67-76
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    • 1997
  • This ppaer describes the development of the stereo camera system(KASS-1) and the control of the vergence of the stereo camera to fix a gaze on a moving object in real-time using a stereo disparity. The motion energy and the stereo disparity of a moving object from the stereo image are used to control the vergence of stereo camera to keep stereo disparity constant. The disparity from the rotating stereo camera is introduced not only from the moving object but also from the background. In this paper, the background disparity error due to the vergence control of the stereo camera is eliminated by compensation algoithm, and the vergence of steereo camera system can be controlled continuously using the disparity of a moving object only.

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Fuzzy control of camera pan tilt device for remote surveillance system (원격 감시용 카메라의 자동 조향을 위한 Fuzzy 제어)

  • 정우태;박영수;윤지섭
    • 제어로봇시스템학회:학술대회논문집
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    • 1993.10a
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    • pp.811-814
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    • 1993
  • The development of fuzzy pan/tilt controller for remote handling in hostile environment is presented in this paper. In remote handling, control of the camera system is somewhat tedious and time consuming. Operators should do the two tasks of manipulating teleoperator and camera pan/tilt at the same time. By automating pan/tilt control, we expect operators could concentrate only on remote operation. When operators control camera pan/tilt they use simple linguistic rules such as "If the position of end effector on TV monitor is at the edge of the screen, control pan/tilt to display the end effector near the center of the screen." Such a rule is similar to fuzzy logic, so we used fuzzy logic controller to control camera pan/tilt. pan/tilt.

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A Design of Fuzzy PI Controller for Improving AE System of Mobile Digital Camera (모바일 디지털 카메라의 AE 시스템 개선을 위한 퍼지 PI 제어기 설계)

  • Cho, Sun-Ho;Kim, Dong-Han;Park, Chong-Kug
    • Journal of Institute of Control, Robotics and Systems
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    • v.15 no.8
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    • pp.786-791
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    • 2009
  • Recently, digital camera module has been extensively utilized in mobile devices. The digital camera module should be smaller and lighter than digital still camera module to be used in mobile device. But, mobile camera can't get high quality image as good as the one of digital still camera due to the optical limitation of minimized module. Especially, AE system of mobile camera occurs excessive hunting and oscillation due to miniaturization of module. In this paper, improved AE algorithm which is applied fuzzy PI control is suggested to compensate this point.

Signal Generation for Automatic Control of a Monitoring Camera

  • Kim, Jin-Tae;Oh, Jeong-Su
    • Journal of information and communication convergence engineering
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    • v.7 no.4
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    • pp.551-555
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    • 2009
  • This paper proposes a signal generation method for automatic control of a monitoring camera. Using the control signal, the monitoring camera can track a moving object and keep it near the image center for a longer time. The proposed method is estimated in the experiments that automatically move a maker located at the specified position to the image center.