DE69104906D1 - Verfahren und Apparat zur optischen Inspektion von band- oder blattförmigen Produkten. - Google Patents

Verfahren und Apparat zur optischen Inspektion von band- oder blattförmigen Produkten.

Info

Publication number
DE69104906D1
DE69104906D1 DE69104906T DE69104906T DE69104906D1 DE 69104906 D1 DE69104906 D1 DE 69104906D1 DE 69104906 T DE69104906 T DE 69104906T DE 69104906 T DE69104906 T DE 69104906T DE 69104906 D1 DE69104906 D1 DE 69104906D1
Authority
DE
Germany
Prior art keywords
strip
digital signal
optical inspection
analyzing unit
image
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 - Fee Related
Application number
DE69104906T
Other languages
English (en)
Other versions
DE69104906T2 (de
Inventor
Toni Laitinen
Timo Piironen
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.)
Rautaruukki Oyj
Original Assignee
Rautaruukki Oyj
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 Rautaruukki Oyj filed Critical Rautaruukki Oyj
Application granted granted Critical
Publication of DE69104906D1 publication Critical patent/DE69104906D1/de
Publication of DE69104906T2 publication Critical patent/DE69104906T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G01N21/8903—Optical details; Scanning details using a multiple detector array
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding

Landscapes

  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Saccharide Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)
DE69104906T 1990-06-07 1991-05-14 Verfahren und Apparat zur optischen Inspektion von band- oder blattförmigen Produkten. Expired - Fee Related DE69104906T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI902842A FI85308C (fi) 1990-06-07 1990-06-07 Foerfarande och anordning foer optisk granskning av ark- och banformiga produkter.

Publications (2)

Publication Number Publication Date
DE69104906D1 true DE69104906D1 (de) 1994-12-08
DE69104906T2 DE69104906T2 (de) 1995-03-23

Family

ID=8530584

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69104906T Expired - Fee Related DE69104906T2 (de) 1990-06-07 1991-05-14 Verfahren und Apparat zur optischen Inspektion von band- oder blattförmigen Produkten.

Country Status (7)

Country Link
US (1) US5263094A (de)
EP (1) EP0460431B1 (de)
JP (1) JPH04232573A (de)
AT (1) ATE113719T1 (de)
CA (1) CA2041456A1 (de)
DE (1) DE69104906T2 (de)
FI (1) FI85308C (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325443A (en) * 1990-07-06 1994-06-28 Westinghouse Electric Corporation Vision system for inspecting a part having a substantially flat reflective surface
US5440648A (en) * 1991-11-19 1995-08-08 Dalsa, Inc. High speed defect detection apparatus having defect detection circuits mounted in the camera housing
DE4239456A1 (de) * 1992-11-24 1994-06-09 Rheinmetall Sick Optical Inspe Verfahren und Vorrichtung zur Inspektion von Oberflächen
US5515452A (en) * 1992-12-31 1996-05-07 Electroglas, Inc. Optical character recognition illumination method and system
ES2117575B1 (es) * 1996-08-05 1999-04-01 Chep Pooling Systems B V Procedimiento para el reconocimiento y la clasificacion automaticos de defectos en paletas o elementos similares, y sistema correspondiente .
US6064429A (en) * 1997-08-18 2000-05-16 Mcdonnell Douglas Corporation Foreign object video detection and alert system and method
US7171033B2 (en) * 2001-03-28 2007-01-30 The Boeing Company System and method for identifying defects in a composite structure
US6871684B2 (en) 2002-08-13 2005-03-29 The Boeing Company System for identifying defects in a composite structure
US7424902B2 (en) 2004-11-24 2008-09-16 The Boeing Company In-process vision detection of flaw and FOD characteristics
US20060108048A1 (en) * 2004-11-24 2006-05-25 The Boeing Company In-process vision detection of flaws and fod by back field illumination
SE531120C2 (sv) * 2007-09-25 2008-12-23 Abb Research Ltd En anordning och ett förfarande för stabilisering och visuell övervakning av ett långsträckt metalliskt band
TWI387320B (zh) * 2008-08-15 2013-02-21 Novatek Microelectronics Corp 影像信號雜訊濾除裝置與方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1762412A1 (de) * 1968-06-12 1970-05-06 Telefunken Patent Einrichtung in einer Datenverarbeitungsanlage mit einer Analog-Digital-Umsetzungsstufe und einem dieser nachgeschalteten Digitalspeicher
FR2559581B1 (fr) * 1984-02-10 1986-07-11 Siderurgie Fse Inst Rech Procede et installation de detection de defauts de surface sur une bande en cours de defilement
DE3542484A1 (de) * 1985-11-30 1987-07-02 Ant Nachrichtentech Verfahren zur erkennung von kantenstrukturen in einem bildsignal
JPS62247478A (ja) * 1986-04-21 1987-10-28 Hitachi Ltd パタ−ン検査装置
US4751572A (en) * 1986-12-30 1988-06-14 The United States Of America As Represented By The United States Department Of Energy High speed data compactor
JP2539856B2 (ja) * 1987-10-15 1996-10-02 株式会社ヒューテック 印刷パタ―ン周期長のずれ検知方法
US4953023A (en) * 1988-09-29 1990-08-28 Sony Corporation Coding apparatus for encoding and compressing video data

Also Published As

Publication number Publication date
JPH04232573A (ja) 1992-08-20
FI85308C (fi) 1992-03-25
US5263094A (en) 1993-11-16
DE69104906T2 (de) 1995-03-23
FI85308B (fi) 1991-12-13
FI902842A0 (fi) 1990-06-07
EP0460431A1 (de) 1991-12-11
CA2041456A1 (en) 1991-12-08
FI902842A (fi) 1991-12-08
ATE113719T1 (de) 1994-11-15
EP0460431B1 (de) 1994-11-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee