• Title/Summary/Keyword: Serial camera

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Hardware Implementation of Minimized Serial-Divider for Image Frame-Unit Processing in Mobile Phone Camera. (Mobile Phone Camera의 이미지 프레임 단위 처리를 위한 소형화된 Serial-Divider의 하드웨어 구현)

  • Kim, Kyung-Rin;Lee, Sung-Jin;Kim, Hyun-Soo;Kim, Kang-Joo;Kang, Bong-Soon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.119-122
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    • 2007
  • In this paper, we propose the method of hardware-design for the division operation of image frame-unit processing in mobile phone camera. Generally, there are two types of the data processing, which are the parallel and serial type. The parallel type makes it possible to process in realtime, but it needs significant hardware size due to many comparators and buffer memories. Compare the serial type with the parallel type, the hardware size of the serial type is smaller than the other because it uses only one comparator, but serial type is not able to process in realtime. To use the hardware resources efficiently, we employ the serial divider since frame-unit operation for image processing does not need realtime process. When compared with both in the same bit size and operating frequency, the hardware size of the serial divider is approximately in the ratio of 13 percentage compared with the parallel divider.

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CHARACTERISTICS OF THE BOAO 2K CCD CAMERA (보현산천문대 2K CCD 카메라의 특성)

  • PARK BYEONG-GON;CHUN MOO-YOUNG;YUK IN-SOO;SEONG HYEON-CHEOL
    • Publications of The Korean Astronomical Society
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    • v.16 no.1
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    • pp.31-36
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    • 2001
  • We present the characteristics of the 2K CCD camera at the Bohyunsan Optical Astronomy Observatory of the Korea Astronomy Observatory at the time of its development. The purpose of this paper is to support the observers who may need detailed information on the characteristics of the camera and to provide helpful information on the optimization' of a CCD camera for those who try to develop their own camera. The 2K CCD camera was optimized to have a gain of $1.8e^-/ADU$ and a read out noise of $7e^-$ from an experiment using radioactive $^{55}Fe$ X-ray source. The charge transfer efficiency was measured as 0.9999976 for serial and 0.9999942 for parallel direction, which means $0.5\%$ charge loss along the serial direction and $1.2\%$ along the parallel direction across the chip. The quantum efficiency of the camera was measured from an experiment using a homogeneous light source consisting of a halogen lamp and an integrating sphere with a monochromator. The resulting quantum efficiency of the camera peaked at the wavelength range 600-700 nm with the value of $\~0.89$.

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Development of an Image Tracking System Using an USB Camera on an Embedded System (USB Camera를 이용한 이미지 트래킹을 위한 Pan/Tilt 제어용 Embedded System 개발)

  • Kim, Hie-Sik;Nam, Chul;Ayurzana, Odgera;Ha, Kwan-Yong
    • Proceedings of the KIEE Conference
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    • 2005.05a
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    • pp.182-184
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    • 2005
  • An embedded system has been applied to many fields including households and industrial sites. The embedded system is implemented fur image tracking in security area. This system supports a fixed IP far the reliable server operation on TCP/IP networks. A real time video image on the is analyzed to detect a certain invader who jumped into the observed area. The digital camera is connected at the USB host port of the target board. The video images from the video camera is continuously analyzed and displayed at the Linux web-server. The moving vector of the invaders on the continuous image frames is calculated and then it sends the calculated pan/tilt movement. That used Block matching algorithm and edge detection algorithm for past speed. And the displacement vector is used at pan/tilt motor control through RS232 serial cable. The experiment result showed tracking performance by the moving part speed of 10 to 150 pixels/sec.

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A Study on the Continuous Cadastral Map Compilation with Digital Camera Image (디지털 항공영상을 이용한 연속지적도 편집에 관한 연구)

  • Lee, Jae-One;Lee, Seung-Bok
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2010.04a
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    • pp.259-261
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    • 2010
  • This paper describes the results and possibility of continuous cadastral map compilation with digital camera image. A high quality serial cadastral map can be produced and work efficiency can be increased with using digital aero-photogrammetry when edge matching method could be used to match digital cadastral map.

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Development and Application of the Visual Test Instrument for Spent CANDU Fuel Bundle Serial Number Identification (CANDU형 사용후 핵연료 다발 일련번호 확인을 위한 육안검사 장치 개발 및 적용)

  • Na, Won-Woo;Lee, Young-Gil;Yoon, Wan-Ki;Kwack, Eun-Ho;Park, Seung-Sik
    • Journal of the Korean Society for Nondestructive Testing
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    • v.19 no.2
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    • pp.93-99
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    • 1999
  • SCAI(spent CANDU fuel bundle serial number identifier) was developed to read serial numbers of spent fuel bundles in the spent fuel storage. For the purpose of effectively identifying the serial number of fuel bundle. SCAI was composed of underwater camera & light part. guiding & supporting part and control & monitor part. So it is easy to assemble and disassemble, and operate. It was tested to read serial numbers of spent fuel bundles loaded in basket during the recent spent fuel transfer campaign at Wolsong Unit 1. And it was also applied to read serial numbers of spent fuel bundles discharging from the initial core at Wolsong Unit 3 by slight change of camera and light. Inspectors could easily operate SCAI after several practices in the storage pond, which was a user friendly. And SCAI provided clear and immediate picture for identification of serial numbers of spent fuel bundles. It was interally evaluated that SCAI greatly contributed to cut inspection efforts for national and international safeguards at Wolsong power plant.

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Remote Monitoring and Motor Control Based on Multi-Platform (다중플랫폼 기반 영상감시 및 원격지 모터제어시스템 구현)

  • Choi, Seung-Dal;Jang, Gun-Ho;Kim, Seok-Min;Nam, Boo-Hee
    • Proceedings of the KIEE Conference
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    • 2004.11c
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    • pp.200-202
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    • 2004
  • This paper deals with the real-time monitoring and control system using PC, PDA(Win CE embedded device) and PCS(based BREW platform). The camera attached to the server captures the moving target, and the captured frame of color image is encoded in JPEG for image compression at the server. The client(PC, PDA, PCS) receives the image data from the remote server and the received image is decoded from decompression. We use the TCP/IP protocol to send the image frames. The client can control the position of the camera by sending the control command to the server. Two DC servo motors for the camera are controlled in any directions, up-down and left-right, by the controller which is communicating with the server via the serial communication to get the control command. In this way, on the client we can monitor the moving images at the server and also control the position of the camera.

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Quantitative Evaluation of Fabric Drape Using Image Analysis (화상처리기법을 활용한 천의 드레이프성의 정량적 평가방법)

  • Park, Chang-Kyu
    • Fashion & Textile Research Journal
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    • v.4 no.3
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    • pp.284-288
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    • 2002
  • In this research, a new quantitative fabric drape evaluation system has been developed using image processing technology. The purpose of this research is to get the more detailed information of fabric drapability quantitatively from digital images captured with a digital camera generally commercialized. The shape parameters of a 3-dimensional geometric drape model were defined as the number of nodes, frequency and amplitude. Also, various statistical information of drape shapes can be obtained using image processing technology and frequency analysis as well as traditional drape coefficients. Hardware system to capture drape images is simply composed of three parts including a digital USB (Universal Serial Bus) camera, a frame cover and a stand for camera to attach to traditional drape tester. The evaluation software coded with the MS Visual C++ is operated under the MS windows 9x above.

A position control method of LDM using vision system (비젼을 이용한 LDM의 위치 제어 방식)

  • 김영렬;김주웅;엄기환;이현관
    • Proceedings of the IEEK Conference
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    • 2003.07c
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    • pp.2505-2508
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    • 2003
  • In this paper, we propose the method to control the position of LDM(Linear DC Motor) using vision system. The proposed method is composed of a vision system for position detecting, and main computer calculates PID control output which is deliver to 80il actuator circuit in serial communication. To confirm the usefulness of the proposed method, we experimented about position control of a small size LDM using CCD camera which has a performance 30frames/sec as vision system.

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Vision Inspection Module for Dimensional Measurement in CMM having Vision Probe (비젼프로브를 가지는 3차원 측정기를 위한 형상 측정 시스템 묘듈 개발)

  • 이일환;박희재;김구영
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.379-383
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    • 1995
  • In this paper, vision inspection module for dimensional measurement has been developed. For high accuracy of CMM, camera calibration and edge detection with subpixel accuracy have been implemented. In measurement process, the position of vision probe can be recognized in PC by serial communication with CMM controller. The developed vision inspection module can be widely applied to the practical measurement process.

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Robot manipulator Visual servoing system (영상추적 로봇 암 시스템)

  • Jeong, Yun-Yong;Choi, Seung-Jin;Hyun, Woong-Keun
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1771-1772
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    • 2007
  • The purpose of this project is to develop the visual servoing system with 5d.o.f robot manipulator. For this, we developed robot manipulator by using 5 serial RC motors and the visual system is also developed by using low cost USB CCD camera. RISC MPU ATMEGA128 is main controller MPU for the robot manipulator. To control the manipulator Kinematics was analyzed and GUI, API for vision system also were developed.

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