WO2008125702A1 - Sistema de detección de defectos en superficies por fusión de imágenes mediante barrido de iluminación - Google Patents
Sistema de detección de defectos en superficies por fusión de imágenes mediante barrido de iluminación Download PDFInfo
- Publication number
- WO2008125702A1 WO2008125702A1 PCT/ES2007/000236 ES2007000236W WO2008125702A1 WO 2008125702 A1 WO2008125702 A1 WO 2008125702A1 ES 2007000236 W ES2007000236 W ES 2007000236W WO 2008125702 A1 WO2008125702 A1 WO 2008125702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- images
- detection
- defects
- faults
- lighting
- Prior art date
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
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- 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
-
- 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
Definitions
- the invention that is protected in this patent consists of a system for detecting surface defects by image fusion with amplification of defects obtained by scanning lighting.
- the surfaces can be those corresponding to small objects or large objects such as household appliances or car bodies. In this sense, the system has been tested on bodywork of motor vehicles.
- the detection system that we expose is based on the generation of a lighting scan on the surface to be detected, keeping the position of the object and the image acquisition system fixed by artificial vision.
- the fixed relative position between the object to be inspected and the image acquisition cameras eliminates the distortions caused by vibrations associated with the relative movement between them, which would blur the defect and make it undetectable. On the contrary, the vibrations associated with the mobile lighting does not affect the acquired images.
- the lighting consists of a set of narrow and planar light beams (eg high frequency fluorescent tubes) capable of enhancing the defect by an optical phenomenon of amplification in the vicinity of the edge of the lighting, that is, in transits from light to shadow and from shadow to light.
- the beam border acquires around the defect a curvature with a diameter of up to ten times the size of the defect itself. It is this phenomenon that enables the system to detect microdefects with a small number of cameras.
- the processing is performed on the merged image of all the captured images, and not on each of them, as do other systems and procedures.
- the fusion of images is carried out in the image acquisition system itself by a simple superposition of them with a non-significant consumption of time.
- the defect detection system is of high sensitivity as a result of the optical amplification thereof described above. It is also a high precision system as it is not affected by the vibrations associated with the movements, since the cameras and object are fixed, that is, without relative movement. It is a high speed system because instead of processing each and every one of the acquired images, it processes only a merged image of all of them.
- the detection system may be located along the manufacturing chain at all points where it is possible to detect possible surface defects. That is, after forming the surface, after priming, after lacquering, etc. The location will depend exclusively on the importance and transcendence of the detection and ease of correction of said defect at that point in the manufacturing chain.
- the object is transferred to the inspection area at a point below the observation of a set of cameras.
- a lighting system generates a variable number of planar beams that run along the surface, illuminating all those parts of it susceptible to inspection.
- This scanning of planar beams maximizes the microdefects in the captured image and makes them detectable by subsequent processing.
- this illumination enhances the defect by an amplification mechanism in the vicinity of the edge of the planar beam, that is, in the transits from light to shadow and from shadow to light.
- This phenomenon capable of amplifying up to ten times the size of the defect, is what enables the system to detect microdefects with a small number of cameras.
- each of the acquisition units captures and merges the images corresponding to their visual field.
- the object to be inspected is free to leave the inspection area, proceeding simultaneously to the processing of each of the images resulting from the fusion and associated with each of the units.
- the defects detected are classified by their size, shape, etc. being located on the object, facing its future correction within the manufacturing chain. It is this precise detection and location that allows us to automate the subsequent defect correction process using robotic systems or similar mechanisms.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007350995A AU2007350995A1 (en) | 2007-04-16 | 2007-04-16 | System of detection of faults in surfaces by merging of images by means of light sweeping |
MX2009011152A MX2009011152A (es) | 2007-04-16 | 2007-04-16 | Sistema de deteccion de defectos en superficies por fusion de imagenes mediante barrido de iluminacion. |
KR1020097023772A KR20100005127A (ko) | 2007-04-16 | 2007-04-16 | 빛의 이동에 의한 영상 통합을 이용하는 표면 결함 탐지 시스템 |
PCT/ES2007/000236 WO2008125702A1 (es) | 2007-04-16 | 2007-04-16 | Sistema de detección de defectos en superficies por fusión de imágenes mediante barrido de iluminación |
EP07765825A EP2157423A4 (en) | 2007-04-16 | 2007-04-16 | SYSTEM FOR DETECTING DEFECTS ON SURFACES BY MERGING LIGHT SCANNING IMAGES |
CA2684365A CA2684365A1 (en) | 2007-04-16 | 2007-04-16 | System of detection of faults in surfaces by merging of images by means of light sweeping |
JP2010503533A JP2010525312A (ja) | 2007-04-16 | 2007-04-16 | 光掃引を用いたイメージの併合による表面内の欠陥の検出のシステム |
CN200780052603A CN101755200A (zh) | 2007-04-16 | 2007-04-16 | 利用扫光通过合并图像来检测表面中的缺陷的系统 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2007/000236 WO2008125702A1 (es) | 2007-04-16 | 2007-04-16 | Sistema de detección de defectos en superficies por fusión de imágenes mediante barrido de iluminación |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008125702A1 true WO2008125702A1 (es) | 2008-10-23 |
Family
ID=39863297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2007/000236 WO2008125702A1 (es) | 2007-04-16 | 2007-04-16 | Sistema de detección de defectos en superficies por fusión de imágenes mediante barrido de iluminación |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP2157423A4 (es) |
JP (1) | JP2010525312A (es) |
KR (1) | KR20100005127A (es) |
CN (1) | CN101755200A (es) |
AU (1) | AU2007350995A1 (es) |
CA (1) | CA2684365A1 (es) |
MX (1) | MX2009011152A (es) |
WO (1) | WO2008125702A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11310467B2 (en) | 2017-05-11 | 2022-04-19 | Inovision Software Solutions, Inc. | Object inspection system and method for inspecting an object |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361374A (ja) | 1986-08-30 | 1988-03-17 | Mazda Motor Corp | 部品検査方法 |
US5090804A (en) * | 1987-07-30 | 1992-02-25 | Virtek Vision Intelligence Robotics Technologies Corporation | Apparatus and method for inspection of surface quality of smooth surfaces |
GB2282444A (en) * | 1993-09-29 | 1995-04-05 | Circuit Foil Sa | Optical inspection system for moving sheet material |
JPH109839A (ja) * | 1996-06-24 | 1998-01-16 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
US5844801A (en) | 1994-12-08 | 1998-12-01 | Honda Giken Kogyo Kabushiki Kaisha | Method of inspecting and manufacturing vehicle body |
US6398870B1 (en) | 1999-05-25 | 2002-06-04 | Chuo Electronic Measurement Co., Ltd. | Coating defect detecting and marking system |
US6532066B1 (en) | 2000-08-05 | 2003-03-11 | Ford Global Technologies, Inc. | Vision system for identification of defects in wet polymeric coatings |
US20030139836A1 (en) | 2002-01-24 | 2003-07-24 | Ford Global Technologies, Inc. | Paint defect automated seek and repair assembly and method |
WO2005100960A1 (ja) | 2004-03-31 | 2005-10-27 | Daihatsu Motor Co., Ltd. | 表面欠陥検査装置 |
WO2006054962A2 (en) | 2004-11-12 | 2006-05-26 | Toyota Motor Manufacturing, North America Inc | Systems and methods for inspecting coatings, surfaces and interfaces |
US20060226380A1 (en) * | 2005-04-11 | 2006-10-12 | Meinan Machinery Works, Inc. | Method of inspecting a broad article |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3712513A1 (de) * | 1987-04-13 | 1988-11-03 | Roth Electric Gmbh | Verfahren und vorrichtung zur erkennung von oberflaechenfehlern |
JPH0636192B2 (ja) * | 1988-03-31 | 1994-05-11 | 日本鋼管株式会社 | 画像合成装置 |
DE10110994B4 (de) * | 2000-03-09 | 2012-11-29 | Isra Vision Systems Ag | Vorrichtung zur Bildabtastung eines Objektes |
JP2002022665A (ja) * | 2000-07-12 | 2002-01-23 | Nkk Corp | 表面欠陥検査方法および装置 |
DE50307761D1 (de) * | 2003-04-03 | 2007-09-06 | Erwin Pristner | Vorrichtung zum Erfassen, Bestimmen und Dokumentieren von Schäden, insbesondere durch plötzliche Ereignisse verursachte Deformationen an lackierten Oberflächen |
DE10317078B4 (de) * | 2003-04-11 | 2013-03-28 | Karlsruher Institut für Technologie, Institut für Mess- und Regelungstechnik | Verfahren und Vorrichtung zur Analyse reflektierender Oberflächen |
-
2007
- 2007-04-16 MX MX2009011152A patent/MX2009011152A/es active IP Right Grant
- 2007-04-16 CA CA2684365A patent/CA2684365A1/en not_active Abandoned
- 2007-04-16 JP JP2010503533A patent/JP2010525312A/ja active Pending
- 2007-04-16 WO PCT/ES2007/000236 patent/WO2008125702A1/es active Application Filing
- 2007-04-16 AU AU2007350995A patent/AU2007350995A1/en not_active Abandoned
- 2007-04-16 KR KR1020097023772A patent/KR20100005127A/ko not_active Application Discontinuation
- 2007-04-16 EP EP07765825A patent/EP2157423A4/en not_active Withdrawn
- 2007-04-16 CN CN200780052603A patent/CN101755200A/zh active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361374A (ja) | 1986-08-30 | 1988-03-17 | Mazda Motor Corp | 部品検査方法 |
US5090804A (en) * | 1987-07-30 | 1992-02-25 | Virtek Vision Intelligence Robotics Technologies Corporation | Apparatus and method for inspection of surface quality of smooth surfaces |
GB2282444A (en) * | 1993-09-29 | 1995-04-05 | Circuit Foil Sa | Optical inspection system for moving sheet material |
US5844801A (en) | 1994-12-08 | 1998-12-01 | Honda Giken Kogyo Kabushiki Kaisha | Method of inspecting and manufacturing vehicle body |
JPH109839A (ja) * | 1996-06-24 | 1998-01-16 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
US6398870B1 (en) | 1999-05-25 | 2002-06-04 | Chuo Electronic Measurement Co., Ltd. | Coating defect detecting and marking system |
US6532066B1 (en) | 2000-08-05 | 2003-03-11 | Ford Global Technologies, Inc. | Vision system for identification of defects in wet polymeric coatings |
US20030139836A1 (en) | 2002-01-24 | 2003-07-24 | Ford Global Technologies, Inc. | Paint defect automated seek and repair assembly and method |
WO2005100960A1 (ja) | 2004-03-31 | 2005-10-27 | Daihatsu Motor Co., Ltd. | 表面欠陥検査装置 |
WO2006054962A2 (en) | 2004-11-12 | 2006-05-26 | Toyota Motor Manufacturing, North America Inc | Systems and methods for inspecting coatings, surfaces and interfaces |
US20060226380A1 (en) * | 2005-04-11 | 2006-10-12 | Meinan Machinery Works, Inc. | Method of inspecting a broad article |
Non-Patent Citations (1)
Title |
---|
See also references of EP2157423A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11310467B2 (en) | 2017-05-11 | 2022-04-19 | Inovision Software Solutions, Inc. | Object inspection system and method for inspecting an object |
US11937020B2 (en) | 2017-05-11 | 2024-03-19 | Inovision Software Solutions, Inc. | Object inspection system and method for inspecting an object |
Also Published As
Publication number | Publication date |
---|---|
JP2010525312A (ja) | 2010-07-22 |
MX2009011152A (es) | 2010-03-17 |
EP2157423A4 (en) | 2011-08-03 |
EP2157423A1 (en) | 2010-02-24 |
KR20100005127A (ko) | 2010-01-13 |
CN101755200A (zh) | 2010-06-23 |
AU2007350995A1 (en) | 2008-10-23 |
CA2684365A1 (en) | 2008-10-23 |
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