WO2000045125A8 - Method of determining an illuminated surface - Google Patents

Method of determining an illuminated surface

Info

Publication number
WO2000045125A8
WO2000045125A8 PCT/SE2000/000024 SE0000024W WO0045125A8 WO 2000045125 A8 WO2000045125 A8 WO 2000045125A8 SE 0000024 W SE0000024 W SE 0000024W WO 0045125 A8 WO0045125 A8 WO 0045125A8
Authority
WO
WIPO (PCT)
Prior art keywords
recorded
determining
light
intensity
representation
Prior art date
Application number
PCT/SE2000/000024
Other languages
French (fr)
Other versions
WO2000045125A1 (en
Inventor
Per-Aake Johansson
Peter Hansson
Original Assignee
Svenska Traeforskningsinst
Johansson Per Aake
Peter Hansson
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 Svenska Traeforskningsinst, Johansson Per Aake, Peter Hansson filed Critical Svenska Traeforskningsinst
Priority to AU24693/00A priority Critical patent/AU2469300A/en
Priority to JP2000596332A priority patent/JP2002535668A/en
Priority to US09/890,056 priority patent/US6757065B1/en
Priority to CA002359263A priority patent/CA2359263A1/en
Priority to EP00903057A priority patent/EP1155284A1/en
Publication of WO2000045125A1 publication Critical patent/WO2000045125A1/en
Publication of WO2000045125A8 publication Critical patent/WO2000045125A8/en

Links

Classifications

    • 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
    • G01B11/306—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces for measuring evenness

Abstract

Method of determining a surface illuminated by incident light. First the intensity (I1(x,y)) of light reflected from the surface is recorded in a first image of the surface. After this, the intensity (I2(x,y)) of light reflected from the surface is recorded in a second image of the surface, taken at a different angle of illumination. Only the diffusely reflected light is recorded. The difference between the recorded intensities of the first and the second images is determined to obtain a representation that emphasises variations in gradient of the surface. This representation is further processed by signal-adapted integration to a topographic description, that is, a height function of the surface.
PCT/SE2000/000024 1999-01-28 2000-01-10 Method of determining an illuminated surface WO2000045125A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU24693/00A AU2469300A (en) 1999-01-28 2000-01-10 Method of determining an illuminated surface
JP2000596332A JP2002535668A (en) 1999-01-28 2000-01-10 How to determine the light receiving surface
US09/890,056 US6757065B1 (en) 1999-01-28 2000-01-10 Method of determining an illuminated surface
CA002359263A CA2359263A1 (en) 1999-01-28 2000-01-10 Method of determining an illuminated surface
EP00903057A EP1155284A1 (en) 1999-01-28 2000-01-10 Method of determining an illuminated surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9900276A SE9900276L (en) 1999-01-28 1999-01-28 Topographic determination of a surface illuminated by incident light
SE9900276-8 1999-01-28

Publications (2)

Publication Number Publication Date
WO2000045125A1 WO2000045125A1 (en) 2000-08-03
WO2000045125A8 true WO2000045125A8 (en) 2000-12-07

Family

ID=20414269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/000024 WO2000045125A1 (en) 1999-01-28 2000-01-10 Method of determining an illuminated surface

Country Status (7)

Country Link
US (1) US6757065B1 (en)
EP (1) EP1155284A1 (en)
JP (1) JP2002535668A (en)
AU (1) AU2469300A (en)
CA (1) CA2359263A1 (en)
SE (1) SE9900276L (en)
WO (1) WO2000045125A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515711C2 (en) 2000-02-09 2001-10-01 Volvo Personvagnar Ab Apparatus and method for measuring surface roughness of a measuring object
SE0003904L (en) * 2000-05-05 2001-11-06 Roger Tuomas Ways of measuring surface roughness
EP1400802A1 (en) * 2002-09-23 2004-03-24 Ford Global Technologies, Inc. Method and arrangement for detecting and evaluating surface irregularities
DE102004050355A1 (en) * 2004-10-15 2006-04-27 Steinbichler Optotechnik Gmbh Method and device for testing the surface of a tire
FI20060331A0 (en) * 2006-04-05 2006-04-05 Kari Seppaelae Method and device for shape measurement / shape identification
US20090027648A1 (en) * 2007-07-25 2009-01-29 Asml Netherlands B.V. Method of reducing noise in an original signal, and signal processing device therefor
FI122448B (en) 2008-07-23 2012-01-31 Labvision Technologies Ltd Oy Figure ring arrangement
JP5436431B2 (en) * 2008-08-26 2014-03-05 株式会社ブリヂストン Method and apparatus for detecting unevenness of subject
ES2670333T3 (en) * 2009-11-14 2018-05-30 Vmt Vision Machine Technic Bildverarbeitungssysteme Gmbh Procedure for detecting the front edge surfaces of hollow fibers and procedure for detecting the interior spaces of hollow, unobstructed fibers of a bundle of hollow fibers
JP6635674B2 (en) * 2015-05-11 2020-01-29 キヤノン株式会社 Measuring device, measuring method and program
EP3182060B1 (en) * 2015-06-05 2023-07-26 Nippon Steel Corporation Shape inspection apparatus for metallic body and shape inspection method for metallic body

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US4162126A (en) * 1976-12-10 1979-07-24 Hitachi, Ltd. Surface detect test apparatus
JPS5892904A (en) * 1981-11-30 1983-06-02 Hitachi Ltd Surface direction detecting method and detector thereof
JPS60135704A (en) * 1983-12-23 1985-07-19 Hitachi Ltd Pattern detector
JPS6182106A (en) * 1984-09-28 1986-04-25 Tokyo Doro Enjinia Kk Detecting method of road surface difference
JPH071164B2 (en) * 1985-02-28 1995-01-11 ソニー株式会社 3D shape recognition device
JPH02243911A (en) * 1989-03-17 1990-09-28 Hitachi Ltd Soldering inspection device
US5463464A (en) * 1991-10-04 1995-10-31 Kms Fusion, Inc. Electro-optical system for gauging surface profile deviations using infrared radiation
US5465153A (en) * 1991-10-04 1995-11-07 Kms Fusion, Inc. Electro-optical system for gauging specular surface profile deviations
US5311286A (en) * 1992-04-01 1994-05-10 Materials Technologies Corporation Apparatus and method for optically measuring a surface
WO1995035506A2 (en) * 1994-06-17 1995-12-28 Kensington Laboratories, Inc. Scribe mark reader
DE19534716C2 (en) * 1995-09-19 1999-06-17 Autronic Bildverarbeitung Device for detecting defects on a smooth surface
HU224946B1 (en) 1995-09-22 2006-04-28 Owens Brockway Glass Container System for checking containers by a field programmable gate array logic
JP3509377B2 (en) 1996-04-12 2004-03-22 株式会社ニコン Curvature measuring device
US5930383A (en) * 1996-09-24 1999-07-27 Netzer; Yishay Depth sensing camera systems and methods
SE508822C2 (en) 1997-02-17 1998-11-09 Volvo Ab Method and apparatus for measuring and quantifying surface defects on a test surface
WO1999058930A1 (en) * 1998-05-14 1999-11-18 Metacreations Corporation Structured-light, triangulation-based three-dimensional digitizer
WO2000003357A1 (en) * 1998-07-08 2000-01-20 Ppt Vision, Inc. Identifying and handling device tilt in a three-dimensional machine-vision image
US6552783B1 (en) * 2000-06-28 2003-04-22 Teradyne, Inc. Optical system

Also Published As

Publication number Publication date
SE511985C2 (en) 2000-01-10
CA2359263A1 (en) 2000-08-03
WO2000045125A1 (en) 2000-08-03
SE9900276D0 (en) 1999-01-28
AU2469300A (en) 2000-08-18
SE9900276L (en) 2000-01-10
US6757065B1 (en) 2004-06-29
EP1155284A1 (en) 2001-11-21
JP2002535668A (en) 2002-10-22

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