KR100517868B1 - 시료 표면의 결함 측정 및 평가 방법 - Google Patents
시료 표면의 결함 측정 및 평가 방법 Download PDFInfo
- Publication number
- KR100517868B1 KR100517868B1 KR10-2003-7008057A KR20037008057A KR100517868B1 KR 100517868 B1 KR100517868 B1 KR 100517868B1 KR 20037008057 A KR20037008057 A KR 20037008057A KR 100517868 B1 KR100517868 B1 KR 100517868B1
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- KR
- South Korea
- Prior art keywords
- image
- gray level
- processing means
- light
- image processing
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Classifications
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- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30156—Vehicle coating
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Quality & Reliability (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims (5)
- 시료 표면의 결함들을 탐지 및 분석하는 방법에 있어서,a) 검사 대상인 표면이 시준광(collimated light)에 노출되고, 그 표면으로부터 반사된 방사광이 위치 분해 화상 처리 수단으로 공급되며,b) 상기 화상 처리 수단에 의하여 공급된 화상을 기초로 하여 마스크(mask)가 생성되고, 상기 마스크는 상기 화상의 상대적으로 밝은 부위들에 의하여 정해지는 마스킹 영역들(masked regions)과 상기 화상의 상대적으로 어두운 부위들에 의하여 정해지는 비마스킹 영역들(unmasked regions)을 갖고, 그레이 레벨 스케일로 역치(threshold value)가 결정되고, 그레이 레벨 값들이 이 역치보다 낮은 화상 부위들은 상대적으로 밝은 부위들이며, 그레이 레벨 값들이 상기 역치보다 높은 화상 부위들은 상대적으로 어두운 부위들이고,c) 검사 대상인 표면이 확산광(diffuse light)에 노출되고, 그 표면으로부터 반사된 방사광이 상기 화상 처리 수단으로 공급되고, 상기 비마스킹 영역들로부터의 방사광만이 상기 확산광의 조명 조건들을 설정하는 데에 고려되는 것인 시료 표면의 결함 탐지 및 분석 방법.
- 제1항에 있어서,상기 방법의 단계 a) 및 단계 c)에서 상기 화상 처리 수단에 의하여 얻어지는 화상 신호들은 디지털화되고 컴퓨터에 의하여 상기 화상들의 그레이 레벨 히스토그램들이 생성되는 것을 특징으로 하는 시료 표면의 결함 탐지 및 분석 방법.
- 제2항에 있어서,상기 조명 조건들은 상기 그레이 레벨 히스토그램의 그레이 레벨 값들의 분포를 나타내는 파라메타, 특히 표준 편차가 최대화되도록 하는 방식으로 설정되고, 상기 조명 조건들 하에 생성된 화상이 선택되는 것을 특징으로 하는 시료 표면의 결함 탐지 및 분석 방법.
- 제2항 또는 제3항에 있어서,상대적으로 어둡거나 상대적으로 밝은 상기 부위들은 상기 방법의 단계 b)에서 정해지고, 그들의 그레이 레벨 값들은 소정 역치보다 크거나 작은 것을 특징으로 하는 시료 표면의 결함 탐지 및 분석 방법.
- 제2항 또는 제 3항에 있어서,상기 마스크는 상기 비마스킹 부위들이 분석 목적들로 고려되어야 하는 화상 처리 수단의 픽셀들의 리스트 형태로 생성되도록 하는 방식으로 생성되는 것을 특징으로 하는 시료 표면의 결함 탐지 및 분석 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10102387.1 | 2001-01-19 | ||
DE10102387A DE10102387C1 (de) | 2001-01-19 | 2001-01-19 | Verfahren zur Feststellung und Bewertung von Defekten einer Probenoberfläche |
PCT/DE2001/004715 WO2002057761A1 (de) | 2001-01-19 | 2001-12-12 | Verfahren zur feststellung und bewertung von defekten einer probenoberfläche |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030063428A KR20030063428A (ko) | 2003-07-28 |
KR100517868B1 true KR100517868B1 (ko) | 2005-09-30 |
Family
ID=7671135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2003-7008057A KR100517868B1 (ko) | 2001-01-19 | 2001-12-12 | 시료 표면의 결함 측정 및 평가 방법 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7308127B2 (ko) |
EP (1) | EP1352232B1 (ko) |
JP (1) | JP2002243647A (ko) |
KR (1) | KR100517868B1 (ko) |
CN (1) | CN1220047C (ko) |
CA (1) | CA2437005C (ko) |
DE (2) | DE10102387C1 (ko) |
WO (1) | WO2002057761A1 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6792357B2 (en) * | 2002-08-27 | 2004-09-14 | Honeywell International Inc. | Optical corrosion measurement system |
EP1794577A4 (en) | 2004-09-17 | 2010-10-06 | Wdi Wise Device Inc | OPTICAL INSPECTION OF FLAT MEDIA USING DIRECT PICTURE TECHNOLOGY |
US20100329539A1 (en) * | 2009-06-30 | 2010-12-30 | Weyerhaeuser Nr Company | System and method for inspecting a composite component |
EP2602763B1 (en) * | 2011-12-09 | 2014-01-22 | C.R.F. Società Consortile per Azioni | Method for monitoring the quality of the primer layer applied on a motor-vehicle body before painting |
AT521215B1 (de) * | 2018-04-24 | 2021-06-15 | Eyyes Gmbh | Verfahren zur Erkennung von Diskontinuitäten an der Oberfläche eines Körpers |
US11842478B2 (en) * | 2020-10-01 | 2023-12-12 | Ford Global Technologies, Llc | Method and apparatus for automated adhesive wash-off quality control and root-cause analysis using artificial intelligence |
CN116402808B (zh) * | 2023-05-31 | 2023-08-25 | 山东华禹威达机电科技有限公司 | 一种电缆夹板模具制造智能化检测方法 |
CN117269180B (zh) * | 2023-11-24 | 2024-03-12 | 成都数之联科技股份有限公司 | 车辆外观检测方法、装置、服务器和计算机可读存储介质 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4629319A (en) * | 1984-02-14 | 1986-12-16 | Diffracto Ltd. | Panel surface flaw inspection |
GB8621418D0 (en) * | 1986-09-05 | 1986-10-15 | Sira Ltd | Inspection apparatus |
US4895446A (en) * | 1986-10-23 | 1990-01-23 | Inspex Incorporated | Particle detection method and apparatus |
US4868404A (en) * | 1987-04-23 | 1989-09-19 | Hajime Industries, Ltd. | Surface inspection apparatus using a mask system to monitor uneven surfaces |
DE4121464A1 (de) * | 1990-06-28 | 1992-01-09 | Mazda Motor | Vorrichtung zur feststellung von oberflaechendefekten |
US5155558A (en) * | 1990-09-19 | 1992-10-13 | E. I. Du Pont De Nemours And Company | Method and apparatus for analyzing the appearance features of a surface |
US5576829A (en) * | 1990-10-08 | 1996-11-19 | Nikon Corporation | Method and apparatus for inspecting a phase-shifted mask |
DE4139107C1 (en) * | 1991-11-28 | 1993-07-08 | Dietzel, Karl, Dr. Dr.Rer.Nat., 4150 Krefeld, De | Establishing and evaluating surface alterations at test pieces - using electronic camera to photograph at specified time intervals before and during natural or artificial weathering |
JPH0634349A (ja) | 1992-07-16 | 1994-02-08 | Kobe Steel Ltd | 逆反射スクリーンによる表面検査方法 |
JPH06235700A (ja) * | 1993-02-09 | 1994-08-23 | Toyota Motor Corp | 塗装欠陥検査装置 |
JPH0763530A (ja) | 1993-08-30 | 1995-03-10 | Canon Inc | ボンディングワイヤー検査装置 |
JPH07159142A (ja) | 1993-12-03 | 1995-06-23 | Honda Motor Co Ltd | ワーク表面検査方法 |
US6148097A (en) * | 1995-06-07 | 2000-11-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical member inspecting apparatus and method of inspection thereof |
JPH0915165A (ja) | 1995-06-29 | 1997-01-17 | Asia Electron Inc | 特徴点抽出装置 |
JP3025946B2 (ja) | 1995-10-11 | 2000-03-27 | 茨城県 | 物体表面の粗さ測定方法及び装置 |
US5828500A (en) * | 1995-10-11 | 1998-10-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical element inspecting apparatus |
JP2976869B2 (ja) * | 1995-12-28 | 1999-11-10 | 日産自動車株式会社 | 表面欠陥検査装置 |
US5831725A (en) * | 1996-10-16 | 1998-11-03 | Atlas Electric Devices Co. | Two-mode surface defect testing system |
US6020954A (en) * | 1997-12-18 | 2000-02-01 | Imagestatistics, Inc. | Method and associated apparatus for the standardized grading of gemstones |
US6201600B1 (en) * | 1997-12-19 | 2001-03-13 | Northrop Grumman Corporation | Method and apparatus for the automatic inspection of optically transmissive objects having a lens portion |
US6061125A (en) * | 1998-01-27 | 2000-05-09 | Insight Control Systems International | Dual illumination apparatus for container inspection |
US6198529B1 (en) * | 1999-04-30 | 2001-03-06 | International Business Machines Corporation | Automated inspection system for metallic surfaces |
US6266138B1 (en) * | 1999-10-12 | 2001-07-24 | Perceptron, Inc. | System and method for detecting defects in a surface of a workpiece |
WO2002040970A1 (en) * | 2000-11-15 | 2002-05-23 | Real Time Metrology, Inc. | Optical method and apparatus for inspecting large area planar objects |
US6847443B1 (en) * | 2002-01-17 | 2005-01-25 | Rudolph Technologies, Inc. | System and method for multi-wavelength, narrow-bandwidth detection of surface defects |
-
2001
- 2001-01-19 DE DE10102387A patent/DE10102387C1/de not_active Expired - Lifetime
- 2001-06-22 JP JP2001190274A patent/JP2002243647A/ja active Pending
- 2001-12-12 KR KR10-2003-7008057A patent/KR100517868B1/ko active IP Right Grant
- 2001-12-12 CN CNB018220428A patent/CN1220047C/zh not_active Expired - Fee Related
- 2001-12-12 DE DE10195867T patent/DE10195867D2/de not_active Expired - Fee Related
- 2001-12-12 WO PCT/DE2001/004715 patent/WO2002057761A1/de not_active Application Discontinuation
- 2001-12-12 EP EP01989406A patent/EP1352232B1/de not_active Expired - Lifetime
- 2001-12-12 CA CA002437005A patent/CA2437005C/en not_active Expired - Lifetime
- 2001-12-12 US US10/466,694 patent/US7308127B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1220047C (zh) | 2005-09-21 |
EP1352232A1 (de) | 2003-10-15 |
US20040081347A1 (en) | 2004-04-29 |
CA2437005C (en) | 2007-01-09 |
JP2002243647A (ja) | 2002-08-28 |
CA2437005A1 (en) | 2002-07-25 |
DE10195867D2 (de) | 2004-01-22 |
EP1352232B1 (de) | 2004-09-22 |
DE10102387C1 (de) | 2002-05-29 |
KR20030063428A (ko) | 2003-07-28 |
US7308127B2 (en) | 2007-12-11 |
CN1486421A (zh) | 2004-03-31 |
WO2002057761A1 (de) | 2002-07-25 |
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