DE69029236D1 - Verfahren und Gerät zum maschinellen Lesen von retroreflektierenden Kernzeichnungsmitteln - Google Patents

Verfahren und Gerät zum maschinellen Lesen von retroreflektierenden Kernzeichnungsmitteln

Info

Publication number
DE69029236D1
DE69029236D1 DE69029236T DE69029236T DE69029236D1 DE 69029236 D1 DE69029236 D1 DE 69029236D1 DE 69029236 T DE69029236 T DE 69029236T DE 69029236 T DE69029236 T DE 69029236T DE 69029236 D1 DE69029236 D1 DE 69029236D1
Authority
DE
Germany
Prior art keywords
machine reading
core drawing
drawing media
retroreflective core
retroreflective
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.)
Expired - Lifetime
Application number
DE69029236T
Other languages
English (en)
Inventor
Thomas F Look
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of DE69029236D1 publication Critical patent/DE69029236D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/60—Type of objects
    • G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10554—Moving beam scanning
    • G06K7/10564—Light sources
    • G06K7/10584—Source control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G06K7/10732—Light sources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2207/00—Other aspects
    • G06K2207/1012—Special detection of object
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2207/00—Other aspects
    • G06K2207/1018—Source control

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Traffic Control Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Character Input (AREA)
  • Image Processing (AREA)
DE69029236T 1989-08-22 1990-08-20 Verfahren und Gerät zum maschinellen Lesen von retroreflektierenden Kernzeichnungsmitteln Expired - Lifetime DE69029236D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39712789A 1989-08-22 1989-08-22

Publications (1)

Publication Number Publication Date
DE69029236D1 true DE69029236D1 (de) 1997-01-09

Family

ID=23569942

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69029236T Expired - Lifetime DE69029236D1 (de) 1989-08-22 1990-08-20 Verfahren und Gerät zum maschinellen Lesen von retroreflektierenden Kernzeichnungsmitteln

Country Status (5)

Country Link
US (1) US5915032A (de)
EP (1) EP0414466B1 (de)
JP (1) JPH0390979A (de)
CA (1) CA2020748A1 (de)
DE (1) DE69029236D1 (de)

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US5340971A (en) * 1990-09-17 1994-08-23 Metrologic Instruments, Inc. Automatic bar code reading system having selectable long range and short range modes of operation
EP0548958B1 (de) * 1991-12-23 2000-03-08 Symbol Technologies, Inc. Laserstrahlabtaster
JP3571770B2 (ja) * 1994-09-16 2004-09-29 キヤノン株式会社 光電変換装置
DE19647251A1 (de) * 1996-11-15 1998-05-20 Voll Elektronik Gmbh Identifikationseinrichtung für ein ortsbewegliches Objekt
SG71018A1 (en) * 1997-03-01 2000-03-21 Inst Of Systems Science Nat Un Robust identification code recognition system
AUPP839199A0 (en) * 1999-02-01 1999-02-25 Traffic Pro Pty Ltd Object recognition & tracking system
US6650765B1 (en) * 2000-01-11 2003-11-18 Pulnix America, Inc. System for simultaneously imaging vehicles and their license plates
US6674878B2 (en) * 2001-06-07 2004-01-06 Facet Technology Corp. System for automated determination of retroreflectivity of road signs and other reflective objects
US6891960B2 (en) 2000-08-12 2005-05-10 Facet Technology System for road sign sheeting classification
US6832728B2 (en) * 2001-03-26 2004-12-21 Pips Technology, Inc. Remote indicia reading system
GB2377538B (en) * 2001-03-28 2004-12-29 Citysync Ltd An automatic number plate recognition system
EP1419478A1 (de) * 2001-08-16 2004-05-19 Optidtech Optical Identification Technologies Ltd. Elektrooptische leser für retro-reflektierende strichkodes
JP3817174B2 (ja) * 2001-12-28 2006-08-30 矢崎総業株式会社 車両用画像修整装置及び夜間運転視界支援装置
WO2003107309A2 (en) * 2002-06-13 2003-12-24 3M Innovative Properties Company System of controlled certificate production and management
US20060132604A1 (en) * 2002-11-08 2006-06-22 Ich-Kien Lao Video quick zoom and autofocus for officer safety
US6776542B1 (en) * 2003-03-28 2004-08-17 Keith Kearney Ticket issuing system
US7590310B2 (en) 2004-05-05 2009-09-15 Facet Technology Corp. Methods and apparatus for automated true object-based image analysis and retrieval
DE102004044887A1 (de) * 2004-09-14 2006-03-30 Wienand, Hans-Theo, Dipl.-Ing. Verfahren und Vorrichtung zur Überwachung des Straßenverkehrs
GB2419761A (en) * 2004-11-01 2006-05-03 Citysync Ltd Control of settings for a vehicle registration plate recognition imaging system
US7451041B2 (en) 2005-05-06 2008-11-11 Facet Technology Corporation Network-based navigation system having virtual drive-thru advertisements integrated with actual imagery from along a physical route
JP5258558B2 (ja) * 2005-05-31 2013-08-07 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 装置の制御のための方法
US8218822B2 (en) * 2007-05-14 2012-07-10 Pips Technology, Inc. Apparatus and method for recognizing the state of origin of a vehicle license plate
ES2306616B1 (es) 2008-02-12 2009-07-24 Fundacion Cidaut Procedimiento de determinacion de la luminancia de señales de trafico y dispositivo para su realizacion.
ES2358814B1 (es) * 2008-05-23 2012-04-02 Universidad De Alcal�? Dispositivo para la medida de la retrorreflectividad en el infrarrojo cercano de superficies retrorreflectivas.
DE102008030903B4 (de) * 2008-06-30 2010-07-01 Siemens Aktiengesellschaft Enforcement-Verfahren und Enforcement-Einrichtung zur Kontrolle eines elektronischen Mautsystems
US9145098B2 (en) 2009-10-08 2015-09-29 3M Innovative Properties Company High contrast retroreflective sheeting and license plates
GB201012178D0 (en) * 2010-07-20 2010-09-01 Telemactics Technology Llp Indicia identifying system
CN102346731B (zh) * 2010-08-02 2014-09-03 联想(北京)有限公司 一种文件处理方法及文件处理装置
US9111136B2 (en) * 2012-04-24 2015-08-18 Xerox Corporation System and method for vehicle occupancy detection using smart illumination
US20160275348A1 (en) * 2015-03-17 2016-09-22 Motorola Mobility Llc Low-power iris authentication alignment
EP3582642A4 (de) 2017-02-20 2021-01-13 3M Innovative Properties Company Optische artikel und damit interagierende systeme
WO2019064108A1 (en) 2017-09-27 2019-04-04 3M Innovative Properties Company PERSONAL PROTECTIVE EQUIPMENT MANAGEMENT SYSTEM USING OPTICAL PATTERNS FOR EQUIPMENT AND SECURITY MONITORING

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
US3550084A (en) * 1966-06-27 1970-12-22 Gen Electric System and method for identifying a set of graphic characters grouped together on a visible information display
US3617707A (en) * 1967-08-17 1971-11-02 Westinghouse Air Brake Co Automatic car identification system
US3604805A (en) * 1969-07-07 1971-09-14 Ford Motor Co Optical detecting and ranging system for automotive vehicles
CH540533A (de) * 1971-07-08 1973-08-15 Zellweger Uster Ag Verfahren und Vorrichtung zum Steuern der Lichtquelle einer optischen Lesevorrichtung
US3944979A (en) * 1974-12-23 1976-03-16 Data Source Corporation Method and apparatus for illuminating an object bearing indicia
US4368979A (en) * 1980-05-22 1983-01-18 Siemens Corporation Automobile identification system
US4491923A (en) * 1981-03-30 1985-01-01 Minnesota Mining And Manufacturing Company Method and apparatus for extracting information from an object that is within a large interrogation zone
AU555112B2 (en) * 1981-03-30 1986-09-11 Minnesota Mining And Manufacturing Company Sensing and identifying information within a large interrogation zone
JPS5876981A (ja) * 1981-10-31 1983-05-10 Sumitomo Electric Ind Ltd 光学的文字読取装置
US4567609A (en) * 1983-03-28 1986-01-28 The United States Of America As Represented By The Secretary Of The Navy Automatic character recognition system
US4603390A (en) * 1984-03-05 1986-07-29 Soft Plus Corp. Computerized parking system
JPS62121590A (ja) * 1985-11-22 1987-06-02 Hitachi Ltd 画像デ−タ処理方法
US4817166A (en) * 1986-05-05 1989-03-28 Perceptics Corporation Apparatus for reading a license plate
US4731854A (en) * 1986-07-17 1988-03-15 Perceptics Corporation Optical system for producing an image for a set of characters
JP2558714B2 (ja) * 1987-07-08 1996-11-27 松下電器産業株式会社 光学式車両検出装置
GB2217498B (en) * 1988-04-18 1992-03-18 Ind Tech Res Inst Method and apparatus for automatically recognising licence plate characters

Also Published As

Publication number Publication date
CA2020748A1 (en) 1991-02-23
EP0414466A3 (en) 1991-11-13
US5915032A (en) 1999-06-22
EP0414466A2 (de) 1991-02-27
EP0414466B1 (de) 1996-11-27
JPH0390979A (ja) 1991-04-16

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Legal Events

Date Code Title Description
8332 No legal effect for de