CA2089079A1 - Machine vision surface characterization system - Google Patents
Machine vision surface characterization systemInfo
- Publication number
- CA2089079A1 CA2089079A1 CA002089079A CA2089079A CA2089079A1 CA 2089079 A1 CA2089079 A1 CA 2089079A1 CA 002089079 A CA002089079 A CA 002089079A CA 2089079 A CA2089079 A CA 2089079A CA 2089079 A1 CA2089079 A1 CA 2089079A1
- Authority
- CA
- Canada
- Prior art keywords
- light source
- surface quality
- video camera
- image
- machine vision
- 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.)
- Granted
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
- G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
Abstract
This invention is a surface inspection system including a light source (111) having a sharp edge between dark and bright and a video camera (121) imaging this edge reflected from the surface. The light intensity of the light source (111) is controlled using a light intensity sensor (115). An optical system (123) focusses an image of the light source (111) at the video camera with sufficient depth of focus to include the surface (10) to be inspected. The exposure duration is set to prevent blurring if the surface is moving. A surface quality computation apparatus computes at least one measure of surface quality, such as gloss, distinctness of reflected image and orange peel of the surface, From the video image signal. This surface quality computation apparatus preferably includes a frame grabber (130) and a general purpose digital computer (140).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/567,271 US5078496A (en) | 1990-08-14 | 1990-08-14 | Machine vision surface characterization system |
US567,271 | 1990-08-14 | ||
PCT/US1991/005697 WO1992003699A1 (en) | 1990-08-14 | 1991-08-09 | Machine vision surface characterization system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2089079A1 true CA2089079A1 (en) | 1992-02-15 |
CA2089079C CA2089079C (en) | 2001-05-08 |
Family
ID=24266464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002089079A Expired - Fee Related CA2089079C (en) | 1990-08-14 | 1991-08-09 | Machine vision surface characterization system |
Country Status (7)
Country | Link |
---|---|
US (1) | US5078496A (en) |
EP (1) | EP0543900B1 (en) |
AT (1) | ATE129070T1 (en) |
CA (1) | CA2089079C (en) |
DE (1) | DE69113806T2 (en) |
ES (1) | ES2077865T3 (en) |
WO (1) | WO1992003699A1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0420845A (en) * | 1990-05-15 | 1992-01-24 | Jujo Paper Co Ltd | Method for measuring gloss irregularity |
US5243405A (en) * | 1991-01-07 | 1993-09-07 | Tichenor Clyde L | Optical system for surface verification |
WO1993012615A1 (en) * | 1991-12-19 | 1993-06-24 | The United States Of America, Represented By The Secretary, United States Department Of Commerce | Method and apparatus for assessment of surface smoothness using reflected energy |
DE4239456A1 (en) * | 1992-11-24 | 1994-06-09 | Rheinmetall Sick Optical Inspe | Method and device for inspecting surfaces |
JP3481631B2 (en) | 1995-06-07 | 2003-12-22 | ザ トラスティース オブ コロンビア ユニヴァーシティー イン ザ シティー オブ ニューヨーク | Apparatus and method for determining a three-dimensional shape of an object using relative blur in an image due to active illumination and defocus |
US6982794B1 (en) | 1995-06-07 | 2006-01-03 | The Boeing Company | Directional reflectometer |
GB2307983B (en) * | 1995-12-06 | 1998-04-29 | Laurie Mullaney Associates Lim | Test equipment for colour printing |
US5892808A (en) * | 1996-06-28 | 1999-04-06 | Techne Systems, Inc. | Method and apparatus for feature detection in a workpiece |
US5986414A (en) * | 1997-07-09 | 1999-11-16 | Synergistech, Inc. | Configurable light output controller, method for controlling lights and a system for implementing the method and including a configurable light output controller |
WO1999045366A1 (en) | 1998-03-05 | 1999-09-10 | Universal Healthwatch, Inc. | Optical imaging system for diagnostics |
US6272437B1 (en) | 1998-04-17 | 2001-08-07 | Cae Inc. | Method and apparatus for improved inspection and classification of attributes of a workpiece |
US6788411B1 (en) * | 1999-07-08 | 2004-09-07 | Ppt Vision, Inc. | Method and apparatus for adjusting illumination angle |
WO2002075295A1 (en) * | 2001-03-16 | 2002-09-26 | Honeywell Oy | An electronic imaging and quality control method for a fast moving web |
BR0208660A (en) * | 2001-04-06 | 2004-03-09 | Akzo Nobel Coatings Int Bv | Method and device for surface assessment |
FR2830079B1 (en) * | 2001-09-26 | 2004-04-30 | Holo 3 | METHOD AND DEVICE FOR MEASURING AT LEAST ONE GEOMETRIC SIZE OF AN OPTICALLY REFLECTIVE SURFACE |
WO2003041902A1 (en) * | 2001-11-15 | 2003-05-22 | Elpatronic Ag | Method and device for evaluation of jointing regions on workpieces |
US7391523B1 (en) * | 2003-06-02 | 2008-06-24 | K-Space Associates, Inc. | Curvature/tilt metrology tool with closed loop feedback control |
FI20126126L (en) | 2012-10-30 | 2014-05-01 | Metso Automation Oy | Method and apparatus for measuring gloss |
DE102013221334A1 (en) * | 2013-10-21 | 2015-04-23 | Volkswagen Aktiengesellschaft | Method and measuring device for evaluating structural differences of a reflecting surface |
JP2017040510A (en) * | 2015-08-18 | 2017-02-23 | キヤノン株式会社 | Inspection apparatus, inspection method, and object manufacturing method |
EP3332685B1 (en) * | 2015-11-18 | 2021-06-16 | Samsung Electronics Co., Ltd. | Moving object, cleaning robot, floor condition determining device, method of controlling the moving object, and method of controlling the cleaning robot |
JP2017198612A (en) * | 2016-04-28 | 2017-11-02 | キヤノン株式会社 | Inspection device, inspection system, and method for manufacturing article |
US10380767B2 (en) * | 2016-08-01 | 2019-08-13 | Cognex Corporation | System and method for automatic selection of 3D alignment algorithms in a vision system |
US10928327B2 (en) * | 2016-12-22 | 2021-02-23 | Axalta Coating Systems Ip Co., Llc | Apparatuses and methods for measuring spatial properties of surface coating containing flake pigment |
US10957072B2 (en) | 2018-02-21 | 2021-03-23 | Cognex Corporation | System and method for simultaneous consideration of edges and normals in image features by a vision system |
EP4200796A1 (en) * | 2020-08-19 | 2023-06-28 | 3M Innovative Properties Company | Robotic repair control systems and methods |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509349A (en) * | 1968-05-21 | 1970-04-28 | Philco Ford Corp | Surface finish inspection device utilizing a plurality of light sources |
JPS5271289A (en) * | 1975-12-11 | 1977-06-14 | Mitsubishi Electric Corp | Surface inspection device |
JPS5676004A (en) * | 1979-11-26 | 1981-06-23 | Toyota Central Res & Dev Lab Inc | Measuring device of flatness |
JPS58169012A (en) * | 1982-03-31 | 1983-10-05 | Matsushita Electric Works Ltd | Surface defect detecting device |
JPS59202045A (en) * | 1983-05-02 | 1984-11-15 | Suga Shikenki Kk | Discrimination of luster effect |
US4629319A (en) * | 1984-02-14 | 1986-12-16 | Diffracto Ltd. | Panel surface flaw inspection |
USH220H (en) * | 1986-03-13 | 1987-02-03 | The United States Of America As Represented By The Secretary Of The Army | Optical performance comparator |
JPH0619262B2 (en) * | 1986-07-11 | 1994-03-16 | 関東自動車工業株式会社 | Method of measuring smoothness of coated surface |
JPS63100310A (en) * | 1986-10-16 | 1988-05-02 | Tokai Rika Co Ltd | Surface property measuring instrument |
US4792232A (en) * | 1987-05-18 | 1988-12-20 | Shell Oil Company | Method and apparatus for detection of undesirable surface deformities |
US4847510A (en) * | 1987-12-09 | 1989-07-11 | Shell Oil Company | Method for comparison of surfaces |
US4929846A (en) * | 1988-10-05 | 1990-05-29 | Ford Motor Company | Surface quality analyzer apparatus and method |
IT1224030B (en) * | 1988-12-23 | 1990-09-26 | Fiat Ricerche | METHOD AND DEVICE FOR THE SURVEY AND CLASSIFICATION OF THE STRUCTURE OF SURFACE TREATMENTS |
-
1990
- 1990-08-14 US US07/567,271 patent/US5078496A/en not_active Expired - Lifetime
-
1991
- 1991-08-09 ES ES91915035T patent/ES2077865T3/en not_active Expired - Lifetime
- 1991-08-09 CA CA002089079A patent/CA2089079C/en not_active Expired - Fee Related
- 1991-08-09 DE DE69113806T patent/DE69113806T2/en not_active Expired - Fee Related
- 1991-08-09 WO PCT/US1991/005697 patent/WO1992003699A1/en active IP Right Grant
- 1991-08-09 AT AT91915035T patent/ATE129070T1/en not_active IP Right Cessation
- 1991-08-09 EP EP91915035A patent/EP0543900B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE129070T1 (en) | 1995-10-15 |
DE69113806D1 (en) | 1995-11-16 |
US5078496A (en) | 1992-01-07 |
EP0543900B1 (en) | 1995-10-11 |
ES2077865T3 (en) | 1995-12-01 |
WO1992003699A1 (en) | 1992-03-05 |
CA2089079C (en) | 2001-05-08 |
EP0543900A4 (en) | 1993-08-04 |
EP0543900A1 (en) | 1993-06-02 |
DE69113806T2 (en) | 1996-04-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |