• Title/Summary/Keyword: PC Camera

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Development of Interferometer for Performance Assessment of IR Optical System (적외선 광학계통 성능평가를 위한 간섭계 개발)

  • 홍경희;고재준;이성태;장세안;오명호
    • Korean Journal of Optics and Photonics
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    • v.2 no.4
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    • pp.179-185
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    • 1991
  • Twyman-Green interferometer is developed for assessment of IR optical system performance. Light source is $CO_2$ gas laser which has 10.6$\mu \textrm m$ wavelength. The light beam is expanded to 2.5 cm dia by Ge lens and splitted by ZnSe parallel plane plate. One of the beams is reflected by refernce mirror which is operated PZT. The fringe will be detected by a pyro-electric vidicon camera and displayed by a CRT monitor. Here, the IR firinge is recorded on the thermal paper. In visible region, the light source is He-Ne laser. The fringe is detected by a CCD camera and displayed by the CRT monitor. The intensity of the fringe is digitized by a image card and processed by a PC. The wavefront aberration function, PSF and OTF are calculated. The results are displayed in 3-D graphs on the monitor or printed out by a line printer.

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A Study on the Automatic Measurement at an Unmanned Measuring Station Using Image Processing and Wireless Networks (화상처리 및 무선네트워크를 이용한 무인 측정 지점에서의 원격 계측 자동화에 관한 연구)

  • Lee, Han-Jun;Cha, Myung-Suk;Lee, Choong-Hoon
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.16 no.3
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    • pp.15-22
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    • 2007
  • An automatic measurement system which collects experimental data at an unmanned station where the networking to the internet could not be accessed was developed. With a Robo-rail accessing to the unmanned station, wireless local networking between server PC at the Rob-rail and client PC at the unmanned station is possible within 30 m from an access point equipment located at the unmanned station. An algorithm for transferring the data file which is saved in the client PC at the unmanned station to the server PC in the Robo-rail was proposed. IEEE-1394 camera was used to collect the data at the client PC. An extracting program from the IEEE-1394 captured images to character data and number data was developed using image processing technique, which drastically reduces the size of data file comparing to that of the raw image file.

A Study on the Gesture Matching Method for the Development of Gesture Contents (체감형 콘텐츠 개발을 위한 연속동작 매칭 방법에 관한 연구)

  • Lee, HyoungGu
    • Journal of Korea Game Society
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    • v.13 no.6
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    • pp.75-84
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    • 2013
  • The recording and matching method of pose and gesture based on PC-window platform is introduced in this paper. The method uses the gesture detection camera, Xtion which is for the Windows PC. To develop the method, the API is first developed which processes and compares the depth data, RGB image data, and skeleton data obtained using the camera. The pose matching method which selectively compares only valid joints is developed. For the gesture matching, the recognition method which can differentiate the wrong pose between poses is developed. The tool which records and tests the sample data to extract the specified pose and gesture is developed. 6 different pose and gesture were captured and tested. Pose was recognized 100% and gesture was recognized 99%, so the proposed method was validated.

A Study on the Development of Automatic Ship Berthing System (선박 자동접안시스템 구축을 위한 기초연구)

  • Kim, Y.B.;Choi, Y.W.;Chae, G.H.
    • Journal of Power System Engineering
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    • v.10 no.4
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    • pp.139-146
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    • 2006
  • In this paper vector code correlation(VCC) method and an algorithm to promote the image processing performance in building an effective measurement system using cameras are described for automatically berthing and controlling the ship equipped with side thrusters. In order to realize automatic ship berthing, it is indispensable that the berthing assistant system on the ship should continuously trace a target in the berth to measure the distance to the target and the ship attitude, such that we can make the ship move to the specified location. The considered system is made up of 4 apparatuses compounded from a CCD camera, a camera direction controller, a popular PC with a built in image processing board and a signal conversion unit connected to parallel port of the PC. The object of this paper is to reduce the image processing time so that the berthing system is able to ensure the safety schedule against risks during approaching to the berth. It could be achieved by composing the vector code image to utilize the gradient of an approximated plane found with the brightness of pixels forming a certain region in an image and verifying the effectiveness on a commonly used PC. From experimental results, it is clear that the proposed method can be applied to the measurement system for automatic ship berthing and has the image processing time of fourfold as compared with the typical template matching method.

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Implementation of Video Signal Delivery Protocols for the Camera Device via the Internet (인터넷을 통한 카메라 디바이스의 영상신호 전달 프로토콜 구현)

  • Lee, Ji-Hoon;Chung, Hae;Baek, Bong-Ki;Jo, Young-Rae
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.25 no.5
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    • pp.691-700
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    • 2021
  • The IP cameras have rapidly replaced the analog CCTVs as the cameras have the advantages of not only being able to remotely monitor, but also supplying power through the UTP cable, In this paper, we introduce the protocol architecture of the ONVIF standard which is widely applied to the IP camera and other Internet protocols to support it, and implement the ONVIF Device on a commercial board. Although these functions can be controlled by the Client (PC), several functions such as privacy masks, temperature display of the thermal camera, and ROI (Region of Interest) are implemented through a web viewer on the device. Through the experiment, the functions of ONVIF Profile S and web viewer are verified through SOAP messages exchanged between Device (IP camera) and Client program and streamed images.

Detection, Identification and Surveillance System Development of Illegal Fishing Vessels in Inshore Fishing Ground (연안 어장에서의 불법 조업 어선의 탐지, 식별 및 감시 시스템 개발)

  • LEE Dae-Jae;KIM Kwang-Sik
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.37 no.4
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    • pp.337-344
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    • 2004
  • A real-time surveillance system of the inshore fishing ground was constructed to identify and detect discrete targets, such as illegal fishing vessels. This paper describes measurements made with a combination of sensors, such as radar, CCTV camera, and GPS receivers, for monitoring the fishing activity of small vessels within the fishing limit zones of the inshore waters. The CCTV camera system was used to confirm detection and to classify the type of target. The location of legal vessels distributed in coastal waters was acquired from each GPS system of ships connected to commercial satellite communication network. The surveillance system was networked via LAN to one host PC with the use of electronic navigational charts (ENC) and a radar link. Radar Target Extractor (RTX) for radar signal processing can be remotely accessed and controlled on existing PC via the internet, from anywhere, at any time. Results are presented that demonstrate the effectiveness of the newly constructed fisheries monitoring system for conducting continuous surveillance of illegal fishing vessels in the inshore fishing ground. The identification of illegal fishing vessels was achieved by comparing radar positions of illegal fishing vessels exceeding the warning limits in the surveillance area with GPS position reports transmitted from legal fishing vessels, and the illegal fishing vessels were marked with red symbols on the ENC screen of a PC. The methods to track the activities of all vessels intruding or leaving the fishing limit zones also were discussed.

CMM(Compact Camera Module) Defect Inspection (CMM(Compact Camera Module) 불량 검사)

  • 고국원;이유진;최병욱;고경철
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.585-589
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    • 2004
  • This paper deals with the algorithm development that inspects defects such as Lens Focus, Black Defect, Dim Defect, Color Defect, White Balance, and Line Defect caused by the process of Compact Camera Module (CCM). These days the demand of CCM goes on increasing in various types like PDA, a cellular phone and PC camera every year. However, owing to the defect inspection of CCM by the semiskilled work the average inspection time of CCM takes about 40 to 50 seconds. As time goes by the efficiency takes a sudden turn for the worse because workers must inspect with seeing a monitor directly. In this paper, to solve these problems, we developed the imaging processing algorithm to inspect the defects in captured image of assembled CCM. The performances of the developed inspection system and its algorithm are tested on many samples. Experimental results reveal that the proposed system can focus the lens of CCM within 5s and we can recognize various types of defect of CCM modules with good accuracy and high speed.

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Development of Automatic Visual Inspection for the Defect of Compact Camera Module

  • Ko, Kuk-Won;Lee, Yu-Jin;Choi, Byung-Wook;Kim, Johng-Hyung
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.2414-2417
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    • 2005
  • Compact Camera Module(CCM) is widely used in PDA, Celluar phone and PC web camera. With the greatly increasing use for mobile applications, there has been a considerable demands for high speed production of CCM. The major burden of production of CCM is assembly of lens module onto CCD or CMOS packaged circuit board. After module is assembled, the CCM is inspected. In this paper, we developed the image capture board for CCM and the imaging processing algorithm to inspect the defects in captured image of assembled CCMs. The performances of the developed inspection system and its algorithm are tested on samples of 10000 CCMs. Experimental results reveal that the proposed system can focus the lens of CCM within 5s and we can recognize various types of defect of CCM modules with good accuracy and high speed.

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Spot insepction System for Camera Target Lens using the Computer Aided Vision System (비젼을 이용한 카메라 렌즈 이물질 검사 시스템 개발)

  • 이일환;안우정;박희재;황두현;김왕도
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.04a
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    • pp.271-275
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    • 1996
  • In this paper, an automatic spot inspection system has been developed for camera target lens using the computer aided vision system. The developed system comprises: light source, magnifying optics, vision camera, XY robot, and a PC. An efficient algotithm for the spot detection has been implemented, thus up tof ew micrometer size spots can be effectively identified in real time. The developed system has been fully interfaced with XY robot systenm, PLCs, thus the practical spot inspection system has been implemented. The system has been applied to a practical camera manufacturing process, and showed its efficiency.

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A study on the speed control of the step motor for driving face-tracking camera (얼굴추적 카메라 구동에 사용된 스텝모터의 속도제어에 관한 연구)

  • Lee, J.B.;Sung, H.K.;Kim, Y.O.;Jeong, J.H.;Bom, J.H.
    • Proceedings of the KIEE Conference
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    • 2001.10a
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    • pp.230-232
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    • 2001
  • The camera system we researched has two stepping motors for the pan and tilt operation, and the human face tracking algorithm. Recently, this kind of the camera is used in PC communication, telecommunication vision meeting and tele-lecture. This paper discusses the smooth speed control method of this camera when the face is moved to up, down, left and right direction. We used a mean shift algorithm for the face-tracking, proposed the speed control algorithm using a fuzzy logic and certified this characteristics with the experiment.

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