KR20220056291A - 로봇을 이용한 비전검사장치 - Google Patents
로봇을 이용한 비전검사장치 Download PDFInfo
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- KR20220056291A KR20220056291A KR1020200140386A KR20200140386A KR20220056291A KR 20220056291 A KR20220056291 A KR 20220056291A KR 1020200140386 A KR1020200140386 A KR 1020200140386A KR 20200140386 A KR20200140386 A KR 20200140386A KR 20220056291 A KR20220056291 A KR 20220056291A
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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
- G01N21/8806—Specially adapted optical and illumination features
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- 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
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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
- 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
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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
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8812—Diffuse illumination, e.g. "sky"
- G01N2021/8816—Diffuse illumination, e.g. "sky" by using multiple sources, e.g. LEDs
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- 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
- G01N2021/8838—Stroboscopic illumination; synchronised illumination
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- 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
- G01N2021/8854—Grading and classifying of flaws
- G01N2021/8867—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing
- G01N2021/887—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing the measurements made in two or more directions, angles, positions
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
- G01N2021/8887—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 based on image processing techniques
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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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
- G01N2021/8905—Directional selective optics, e.g. slits, spatial filters
- G01N2021/8907—Cylindrical optics
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Abstract
본 발명의 바람직한 실시예로 형성되는 로봇을 이용한 비전검사장비에 의하면 촬상된 그림자를 합성한 후에 각 그림자의 픽셀값의 기울기를 통한 값으로 계산하기 때문에 색상의 차이가 일정하지 않아도 그 부분의 정확한 값은 측정가능하고, 부품만의 정확한 위치를 산출할 수 있는 픽셀값과 이에 따른 픽셀값의 예상위치를 기울기를 통해서 확인하므로 대상물의 경계의 정확한 위치와 크기를 산출할 수 있으며, 대상물인 부품의 주연부에서 반사되어 그림자가 또 발생하여도, 픽셀값이 가장 낮은 부분을 찾아서 여기에 기울기 예상값을 추가하기 때문에 정확한 측정이 가능한 등의 효과가 발생한다.
Description
도 2는 본 발명의 바람직한 실시예로 형성된 로봇을 이용한 비전검사장치의 개념도.
도 3은 본 발명의 바람직한 실시예로 형성된 로봇을 이용한 비전검사장치의 가변형링조명의 평면도.
도 4는 본 발명의 바람직한 실시예로 형성된 로봇을 이용한 비전검사장치를 이용한 촬상의 예를 나타낸 개념도.
도 5는 본 발명의 바람직한 실시예로 형성된 로봇을 이용한 비전검사장치를 이용한 촬영 후에 대상물의 주연부에 나타난 픽셀값을 나타낸 개념도.
도 6은 본 발명의 바람직한 실시예로 형성된 로봇을 이용한 비전검사장치를 이용한 촬영 후에 대상물의 주연부에 나타난 픽셀값을 정확히 계산하기 위한 기울기 개념도.
100 : 몸체 110 : 카메라
130 : LED조명 200 : 가변형링조명
Claims (3)
- 가운데에 카메라(110)가 형성되고, 상기 카메라(110)의 전방주연부로 8개의 구역으로 나눠져서 내부에 LED조명(130)이 형성되는 가변형링조명(200)이 형성되며, 상기 카메라(110)는 각각 하나의 각 구획의 LED조명(130)이 켜질 때마다 피검품을 촬상하고, 8개의 영상을 획득하되,
상기 8개의 영상을 합하여, 하나의 형상으로 완성하고, 0~255로 표시되는 픽셀값을 인식한 후 그래프의 감소 기울기 예상값을 계산하여 픽셀값이 낮은 값의 위치에서 기울기 예상값을 적용한 예상위치를 더하여 정밀한 경계위치를 계산함으로써 부품의 크기를 정확히 측정할 수 있도록 형성되는 것을 특징으로 하는 로봇을 이용한 비전검사장치. - 제 1항에 있어서,
상기 가변형링조명(200)은 4개, 6개 또는 12개의 구역으로 나눠지고, 각각 4개, 6개 또는 12개의 영상이 획득되는 것을 특징으로 하는 로봇을 이용한 비전검사장치.
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Citations (5)
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KR20050101572A (ko) * | 2003-02-25 | 2005-10-24 | 소니 가부시끼 가이샤 | 화상 처리 장치 및 방법, 및 프로그램 |
JP2016109437A (ja) * | 2014-12-02 | 2016-06-20 | 株式会社リコー | 画像処理装置及び方法、並びに欠陥検査装置 |
JP2017156212A (ja) * | 2016-03-02 | 2017-09-07 | キヤノン株式会社 | 検査装置、検査方法及び物品の製造方法 |
JP2018200328A (ja) * | 2018-09-18 | 2018-12-20 | 株式会社キーエンス | 検査装置、検査方法およびプログラム |
JP2020169958A (ja) * | 2019-04-05 | 2020-10-15 | 株式会社キーエンス | 画像検査システム及び画像検査方法 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20050101572A (ko) * | 2003-02-25 | 2005-10-24 | 소니 가부시끼 가이샤 | 화상 처리 장치 및 방법, 및 프로그램 |
JP2016109437A (ja) * | 2014-12-02 | 2016-06-20 | 株式会社リコー | 画像処理装置及び方法、並びに欠陥検査装置 |
JP2017156212A (ja) * | 2016-03-02 | 2017-09-07 | キヤノン株式会社 | 検査装置、検査方法及び物品の製造方法 |
JP2018200328A (ja) * | 2018-09-18 | 2018-12-20 | 株式会社キーエンス | 検査装置、検査方法およびプログラム |
JP2020169958A (ja) * | 2019-04-05 | 2020-10-15 | 株式会社キーエンス | 画像検査システム及び画像検査方法 |
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