AU2003254551A1 - Method and device for detecting surface defects on workpieces or components having a shiny surface - Google Patents

Method and device for detecting surface defects on workpieces or components having a shiny surface

Info

Publication number
AU2003254551A1
AU2003254551A1 AU2003254551A AU2003254551A AU2003254551A1 AU 2003254551 A1 AU2003254551 A1 AU 2003254551A1 AU 2003254551 A AU2003254551 A AU 2003254551A AU 2003254551 A AU2003254551 A AU 2003254551A AU 2003254551 A1 AU2003254551 A1 AU 2003254551A1
Authority
AU
Australia
Prior art keywords
surface defects
workpieces
components
image
computer system
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.)
Abandoned
Application number
AU2003254551A
Inventor
Uwe Peter Braun
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU2003254551A1 publication Critical patent/AU2003254551A1/en
Abandoned legal-status Critical Current

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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • 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
    • G01N21/8806—Specially adapted optical and illumination features

Abstract

The invention relates to a method for detecting surface defects on workpieces or components having shiny surfaces, whereby a ghost image in the form of a grating image comprising light and dark image strips is produced on a surface (1) to be tested by means of a projection device comprising a light source, the grating image is detected by means of a camera device (10), and the shape of the grating image detected by the camera device is supplied to a computer system as a measuring signal. Surface defects are determined in the computer system on the basis of the measuring signal and can be identified as significant surface defects requiring secondary treatment by comparison with at least one stored reference pattern.
AU2003254551A 2003-01-08 2003-07-21 Method and device for detecting surface defects on workpieces or components having a shiny surface Abandoned AU2003254551A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10300482.3 2003-01-08
DE10300482A DE10300482B3 (en) 2003-01-08 2003-01-08 Method and device for detecting surface defects on workpieces with shiny surfaces
PCT/EP2003/007920 WO2004063732A1 (en) 2003-01-08 2003-07-21 Method and device for detecting surface defects on workpieces or components having a shiny surface

Publications (1)

Publication Number Publication Date
AU2003254551A1 true AU2003254551A1 (en) 2004-08-10

Family

ID=32478177

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003254551A Abandoned AU2003254551A1 (en) 2003-01-08 2003-07-21 Method and device for detecting surface defects on workpieces or components having a shiny surface

Country Status (5)

Country Link
EP (1) EP1581803B1 (en)
AT (1) ATE333092T1 (en)
AU (1) AU2003254551A1 (en)
DE (2) DE10300482B3 (en)
WO (1) WO2004063732A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101334081B1 (en) * 2005-07-08 2013-11-29 일렉트로 싸이언티픽 인더스트리이즈 인코포레이티드 Achieving convergent light rays emitted by planar array of light sources
DE102009002569A1 (en) * 2009-04-22 2010-10-28 Manroland Ag Method for determining the quality of a printed product
US8233694B2 (en) 2009-10-21 2012-07-31 GM Global Technology Operations LLC Method of appearance deformation indexing
DE102010032241A1 (en) 2010-07-26 2012-01-26 Smartvision Gmbh Method for detecting surface defects e.g. cracks at plastic surface of corrugated pipe, involves testing differential image between two partial region images to determine whether coherent regions are provided with grey values
EP2600283A1 (en) 2011-12-02 2013-06-05 Uwe Peter Braun Method and apparatus for fingerprint detection
DE102013221334A1 (en) * 2013-10-21 2015-04-23 Volkswagen Aktiengesellschaft Method and measuring device for evaluating structural differences of a reflecting surface
DE102019201193A1 (en) * 2019-01-30 2020-07-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for the detection of topographic defects on surfaces of a component
DE102022125197A1 (en) 2022-09-29 2024-04-04 B+M Surface Systems Gmbh Device for examining a surface of a component

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62239005A (en) * 1986-04-11 1987-10-19 Fuji Photo Film Co Ltd Surface shape inspecting instrument
US4792232A (en) * 1987-05-18 1988-12-20 Shell Oil Company Method and apparatus for detection of undesirable surface deformities
DE4041166C2 (en) * 1990-12-21 1995-09-07 Licentia Gmbh Test room for visual quality control of high-gloss surfaces
DE19730885A1 (en) * 1997-07-18 1999-01-21 Audi Ag Process for the automatic detection of surface defects on body-in-white bodies and device for carrying out the process
DE19815250C2 (en) * 1998-03-05 2000-05-31 Uwe Peter Braun Attachment optics for use as reflex image optics, in particular for surface defect detection in the automotive industry
US6100990A (en) * 1999-06-14 2000-08-08 Ford Motor Company Method and apparatus for determining reflective optical quality using gray-scale patterns
DE19944354C5 (en) * 1999-09-16 2011-07-07 Häusler, Gerd, Prof. Dr., 91056 Method and device for measuring specular or transparent specimens

Also Published As

Publication number Publication date
ATE333092T1 (en) 2006-08-15
EP1581803A1 (en) 2005-10-05
WO2004063732A1 (en) 2004-07-29
DE50304256D1 (en) 2006-08-24
EP1581803B1 (en) 2006-07-12
DE10300482B3 (en) 2004-07-08

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase