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WO1996005502A1 - Systeme d'inspection a l'aide d'images video - Google Patents

Systeme d'inspection a l'aide d'images video Download PDF

Info

Publication number
WO1996005502A1
WO1996005502A1 PCT/EP1995/003160 EP9503160W WO9605502A1 WO 1996005502 A1 WO1996005502 A1 WO 1996005502A1 EP 9503160 W EP9503160 W EP 9503160W WO 9605502 A1 WO9605502 A1 WO 9605502A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
color
video
sensor
imaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1995/003160
Other languages
English (en)
Inventor
Israel Fraier
Shaul Israeli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MERON GABRIEL DAVID
Original Assignee
MERON GABRIEL DAVID
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MERON GABRIEL DAVID filed Critical MERON GABRIEL DAVID
Priority to AU33437/95A priority Critical patent/AU3343795A/en
Publication of WO1996005502A1 publication Critical patent/WO1996005502A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores

Definitions

  • VID very long life, maintenance free, low cost color or multispectral Video Imaging and illumination Devices
  • PIR Portable Image Reader connection
  • the visual or Video Imaging inspection in hard to reach compartments in planes, vehicles, ships and various facilities is very important for preventive maintenance of these platforms and facilities and for their safe and reliable performance.
  • Such images have to be in color or be multispectral due to the additional information that color can provide, for example wiring integrity control, corrosion control, etc.
  • VID has to be maintenance free: regarding the difficult places in which one would like to install (bury) such a sensor . Any service needed, for example the replacement of a burnt out light bulb, will cut down considerably the usefulness of this VID concept.
  • the imaging array can be a color sensor and white light illumination can be produced by uniformly combining and intensity balancing red, blue and green LED lights from corresponding single wavelength LEDs or multicolor LEDs.
  • the system can comprise means for shutting down all visible LEDs for a frame period or any other chosen period in order to facilitate the imaging sensor to record chemiluminescence or radio luminescence or phosphorescence or any other light emission induced effect in the observed object.
  • a flash-type UV-excitation light source can be coupled to the illumination light beam combiner for induced fluorescence purposes.
  • a black and white or color image sensor which is a solid state imaging array sensor of the CCD, MOS, CID and Photo-diode type, with or without on-chip memory, where the imaging device comprises video signal processing electronics or a dedicated single chip monolithic video camera.
  • the method of operation of the novel system is based on a separation between the unpowered all solid state and maintenance free miniature video imaging and illumination device, the VID, and a Portable Image Reader which supplies all the power requirement of the VID and also all the electronic signals to the sensor and
  • VID and optionally a video display for visualization of the acquired image.
  • Red, Blue and Green LED lights form corresponding single wavelength LEDs or multicolor LEDs.
  • Fig. 1 is a schematic block diagram of one unit consisting of the Video Imaging and illumination Device and of the Portable Image Reader 13,14,15 .
  • the VID in this particular example is built with a through-wall connector for installation, for example in Toxic chemical processing chambers.
  • Fig. 1 the object to be inspected 12, is illuminated by the light of LEDs. 6, combined in the fiber optic light combiner 5, through the light window 4.
  • the object image is collected through the image window 1 and focused by the lens 2 on the imaging sensor 3.
  • the VID is powered through the PIR fast connector 13.
  • the VID signals are transferred to the signal conditioning unit 14 via the fast connector and displayed on monitor 15.
  • the output signal from the sensor unit is fed to the video processor 23.
  • the video signal produced by 23 is digitized by analog-to-digital circuit 27 and memorized in the memories 28 under controller and operator control panels management.
  • the output from the memories 28 are converted to an analog signal by the digital to analog circuits 29 and fed to buffer-circuits 30.
  • the buffered signals are encoded by the video encoder circuit 31 to a composite video signal 32 and a Y.C. video signal 33.
  • the composite video signal 32 or YC video signal 33 are supplied to a portable VTR with CCD color display 36 for recording and observation.
  • All circuits in the signal conditioner unit are powered by the power supply 24 which is fed by the battery pack 25.
  • the same battery 25 supplies also the VTR 36.
  • the imager signal output is processed by video processor (Sony CXA 1310).
  • the video signal is digitized by A/D circuits (BT 218) memorized in memories (TMS4C1050).
  • the digital signal's from memories are converted into analog video signals by D/A circuits (BT 121) and via buffers (MC 14577) are encoded in standard composite video signal or Y.C. video signal by encoder (MC 1377) and fed to VCR (Sony JV-S50I )input to be recorded and observed on the built in CCD color.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Image Input (AREA)

Abstract

Système d'inspection à l'aide d'images vidéo comprenant un capteur d'images à solide ne nécessitant pratiquement pas d'entretien et comportant des moyens d'illumination uniforme à plusieurs longueurs d'ondes à l'aide d'une ou plusieurs diodes LED à longueur d'onde unique ou multiple, un capteur à matrice de photodétecteurs, un système de lentilles destinée à acquérir une image d'un objet, une unité portative de lecture d'images contenant une source d'énergie, des circuits électroniques de mise en forme et de traitement de signaux ainsi que des moyens de création d'une image vidéo multispectrale, en couleurs vraies ou fausses, de l'objet, ainsi que des moyens d'évaluer cette image. Ce système peut comprendre un capteur d'images en noir et blanc ou en couleurs qui est un capteur à matrice de photodétecteurs à solide. On décrit également un procédé de production et d'évaluation d'une image d'un objet placé dans un compartiment ou dans un dispositif d'accès difficile, qui consiste à illuminer l'objet à l'aide d'un faisceau uniforme à plusieurs longueurs d'onde, à capter l'image à l'aide d'un capteur à matrice de photodétecteurs et d'un système de lentilles, l'illumination étant réalisée par au moins une ou plusieurs diodes LED à longueur d'onde unique ou multiple qui peuvent être activées à la demande et qui sont connectées à une unité portative de lecture d'images comprenant une source d'énergie, des circuits électroniques de mise en forme et de traitement de signaux, des moyens de création d'une image vidéo multispectrale, en couleurs vraies ou fausses, de l'objet, et d'évaluation de cette image, permettant ainsi d'obtenir l'image souhaitée de l'objet et l'évaluation de celle-ci. De même, des émissions fluorescentes provenant d'objets appropriés peuvent être mises en image.
PCT/EP1995/003160 1994-08-09 1995-08-09 Systeme d'inspection a l'aide d'images video Ceased WO1996005502A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33437/95A AU3343795A (en) 1994-08-09 1995-08-09 Video imaging inspection system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL110596 1994-08-09
IL11059694A IL110596A0 (en) 1994-08-09 1994-08-09 Video imaging inspection system

Publications (1)

Publication Number Publication Date
WO1996005502A1 true WO1996005502A1 (fr) 1996-02-22

Family

ID=11066433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003160 Ceased WO1996005502A1 (fr) 1994-08-09 1995-08-09 Systeme d'inspection a l'aide d'images video

Country Status (3)

Country Link
AU (1) AU3343795A (fr)
IL (1) IL110596A0 (fr)
WO (1) WO1996005502A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000070875A1 (fr) * 1999-05-14 2000-11-23 Snap-On Technologies, Inc. Appareil de controle video
US7423280B2 (en) 2004-08-09 2008-09-09 Quad/Tech, Inc. Web inspection module including contact image sensors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317632A (en) * 1979-10-19 1982-03-02 Electric Power Research Institute, Inc. Method and means for optical inspection of the interior surface of tubing
EP0450814A1 (fr) * 1990-03-31 1991-10-09 Nortel Networks Corporation Système d'inspection d'une canalisation
US5195392A (en) * 1990-05-14 1993-03-23 Niagara Mohawk Power Corporation Internal pipe inspection system
WO1994014053A1 (fr) * 1992-12-14 1994-06-23 Pressco Technology, Inc. Systeme de verification a eclairage par diodes electrolumimescentes a spectres multiples

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317632A (en) * 1979-10-19 1982-03-02 Electric Power Research Institute, Inc. Method and means for optical inspection of the interior surface of tubing
EP0450814A1 (fr) * 1990-03-31 1991-10-09 Nortel Networks Corporation Système d'inspection d'une canalisation
US5195392A (en) * 1990-05-14 1993-03-23 Niagara Mohawk Power Corporation Internal pipe inspection system
WO1994014053A1 (fr) * 1992-12-14 1994-06-23 Pressco Technology, Inc. Systeme de verification a eclairage par diodes electrolumimescentes a spectres multiples

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000070875A1 (fr) * 1999-05-14 2000-11-23 Snap-On Technologies, Inc. Appareil de controle video
US7423280B2 (en) 2004-08-09 2008-09-09 Quad/Tech, Inc. Web inspection module including contact image sensors

Also Published As

Publication number Publication date
IL110596A0 (en) 1994-11-11
AU3343795A (en) 1996-03-07

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