NO20065549L - Inspeksjon av ruheten til en treoverflate. - Google Patents

Inspeksjon av ruheten til en treoverflate.

Info

Publication number
NO20065549L
NO20065549L NO20065549A NO20065549A NO20065549L NO 20065549 L NO20065549 L NO 20065549L NO 20065549 A NO20065549 A NO 20065549A NO 20065549 A NO20065549 A NO 20065549A NO 20065549 L NO20065549 L NO 20065549L
Authority
NO
Norway
Prior art keywords
roughness
examined
camera
wood
image
Prior art date
Application number
NO20065549A
Other languages
English (en)
Inventor
Jyri Paavola
Original Assignee
Ekspansio Engineering Ltd Oy
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 Ekspansio Engineering Ltd Oy filed Critical Ekspansio Engineering Ltd Oy
Publication of NO20065549L publication Critical patent/NO20065549L/no

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
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
    • G01N21/8986—Wood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

Oppfinnelsen vedrører en fremgangsmåte for optisk inspeksjon av overflatesponet på en overflate. Fremgangsmåten omfatter det å rette en lysstråle (13) mot overflaten (2) av et trestykke (1) som undersøkes i en retning (D) som avviker fra flatenormalen til nevnte overflate. Overflaten avbildes av et kamera (8) med et bildeplan (9) som dannes av flere optoelektroniske, lysfølsomme piksler, ved med forbestemt mellomrom å ta bilder av overflaten av trestykket som beveger seg i forhold til kameraet, der hvert bilde er i form av elektroniske bildedata. Bildedataene for to suksessive elektroniske bilder subtraheres for å oppnå et sett av pikselrelaterte differansedata som beskriver treoverflaten som undersøkes, og differansedataene anvendes for å uttrykke variasjoner i overflateruheten til overflaten som undersøkes.
NO20065549A 2004-05-27 2006-12-01 Inspeksjon av ruheten til en treoverflate. NO20065549L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20040726A FI117575B (fi) 2004-05-27 2004-05-27 Puupinnan karheuden tarkastus
PCT/FI2005/000221 WO2005116579A1 (en) 2004-05-27 2005-05-16 Inspection of wood surface roughness

Publications (1)

Publication Number Publication Date
NO20065549L true NO20065549L (no) 2006-12-01

Family

ID=32338427

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20065549A NO20065549L (no) 2004-05-27 2006-12-01 Inspeksjon av ruheten til en treoverflate.

Country Status (9)

Country Link
US (1) US8155426B2 (no)
EP (1) EP1749189A4 (no)
AU (1) AU2005248493B2 (no)
CA (1) CA2566016A1 (no)
FI (1) FI117575B (no)
NO (1) NO20065549L (no)
NZ (1) NZ551501A (no)
RU (1) RU2378614C2 (no)
WO (1) WO2005116579A1 (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVR20070018A1 (it) * 2007-02-02 2008-08-03 Microtec Srl Procedimento per controllare la qualita di tronchi
US8174690B2 (en) 2007-05-11 2012-05-08 Argos Solutions As Apparatus for characterizing a surface structure
US7777897B1 (en) * 2007-08-03 2010-08-17 Ventek, Inc. Veneer roughness detection
ES2381723B1 (es) 2010-04-12 2013-04-26 Asociacion De Investigacion Y Desarrollo En La Industria Del Mueble Y Afines (Aidima) Sistema de vision artificial para la deteccion de defectos en superficies acabadas
US9147014B2 (en) * 2011-08-31 2015-09-29 Woodtech Measurement Solutions System and method for image selection of bundled objects
JP2013181911A (ja) * 2012-03-02 2013-09-12 Dowa Metals & Mining Co Ltd 非鉄金属の表面状態の定量評価方法および定量評価装置、並びに、電着金属板
JP6488874B2 (ja) * 2015-05-14 2019-03-27 日産自動車株式会社 表面検査装置及び表面検査方法
JP6357617B2 (ja) * 2016-10-18 2018-07-18 株式会社高瀬文夫商店 蒲鉾板の欠陥検査装置
FI128235B (en) * 2018-12-10 2020-01-15 Procemex Oy Ltd Top side light
EP3938733A4 (en) * 2019-03-15 2023-03-22 Certainteed Gypsum, Inc. SURFACE TEXTURE CHARACTERIZATION METHOD AND TEXTURE CHARACTERIZATION TOOL

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1078489A (en) 1976-05-05 1980-05-27 Domtar Limited Surface sensor
FI763517A (fi) * 1976-12-08 1978-06-09 Decon Ab Oy Foerfarande och anordning foer bestaemning av ett foeremaols saerskilt saogvirkes kvalitet
IT1108255B (it) * 1978-10-24 1985-12-02 Fiat Spa Procedimento e dispositivo per il controllo della rugosita della superficie di un pezzo che ha subito una lavorazione meccanica
GB2081891A (en) * 1980-08-11 1982-02-24 Wiggins Teape The Group Ltd Web monitoring apparatus
DE3406375A1 (de) 1984-02-22 1985-08-22 SIGNUM Computer für Signalverarbeitung und Mustererkennung GmbH, 8000 München Geraet zur bestimmung von oberflaechenprofilen von nichttransparentem material durch digitale auswertung einer sequenz von mikroskopbildern mit unterschiedlichen schaerfeebenen
JPS61259112A (ja) * 1985-05-14 1986-11-17 Olympus Optical Co Ltd 粗面検出装置
PL156698B1 (en) * 1988-04-08 1992-04-30 Krzysztof Tabedzki Method of reproducing shape of sawn wood while moved on a conveyor in order to control sorting and/or resawing operations
US4878114A (en) * 1988-05-10 1989-10-31 University Of Windsor Method and apparatus for assessing surface roughness
US5229835A (en) * 1991-08-07 1993-07-20 Hughes Aircraft Company Optical monitoring
JPH08292158A (ja) 1995-04-25 1996-11-05 Sharp Corp 用紙類のしわ検出方法およびしわ検出装置
US5644392A (en) * 1995-09-12 1997-07-01 U.S. Natural Resources, Inc. Scanning system for lumber
US6122065A (en) * 1996-08-12 2000-09-19 Centre De Recherche Industrielle Du Quebec Apparatus and method for detecting surface defects
US5960104A (en) * 1996-08-16 1999-09-28 Virginia Polytechnic & State University Defect detection system for lumber
EP0979995A1 (en) * 1998-08-12 2000-02-16 Hildeco OY Ltd. Method and system for monitoring a paper web, a paper pulp or a wire travelling in a paper machine
FI990539A0 (fi) * 1999-03-11 1999-03-11 Valtion Teknillinen Kuori- ja puupitoisuuden mittaukseen tarkoitettu menetelmä
FI114743B (fi) * 1999-09-28 2004-12-15 Ekspansio Engineering Ltd Oy Telesentrisellä periaatteella toimiva laitteisto ja menetelmä
US6624883B1 (en) * 2000-09-28 2003-09-23 National Research Council Of Canada Method of and apparatus for determining wood grain orientation
JP2004522974A (ja) * 2001-03-16 2004-07-29 ハニウエル オサケ ユキチュア 高速移動ウェブの電子撮像および品質管理方法
ITBZ20020018A1 (it) * 2002-04-18 2003-10-20 Microtec Srl Procedimento per riconoscere sulla superficie di tavole di legno la presenza di difetti quali crepe o bordi smussati.
US7406190B2 (en) * 2003-07-24 2008-07-29 Lucidyne Technologies, Inc. Wood tracking by identification of surface characteristics

Also Published As

Publication number Publication date
EP1749189A1 (en) 2007-02-07
FI117575B (fi) 2006-11-30
AU2005248493A1 (en) 2005-12-08
US20080239287A1 (en) 2008-10-02
FI20040726A0 (fi) 2004-05-27
NZ551501A (en) 2008-11-28
US8155426B2 (en) 2012-04-10
EP1749189A4 (en) 2008-04-09
CA2566016A1 (en) 2005-12-08
RU2006140854A (ru) 2008-07-10
WO2005116579A1 (en) 2005-12-08
RU2378614C2 (ru) 2010-01-10
FI20040726A (fi) 2005-11-28
AU2005248493B2 (en) 2010-01-21

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