KR100615047B1 - 용접부의 결함 자동 검측 방법 - Google Patents
용접부의 결함 자동 검측 방법 Download PDFInfo
- Publication number
- KR100615047B1 KR100615047B1 KR1020050020684A KR20050020684A KR100615047B1 KR 100615047 B1 KR100615047 B1 KR 100615047B1 KR 1020050020684 A KR1020050020684 A KR 1020050020684A KR 20050020684 A KR20050020684 A KR 20050020684A KR 100615047 B1 KR100615047 B1 KR 100615047B1
- Authority
- KR
- South Korea
- Prior art keywords
- image
- defect
- defects
- circular
- operator
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/043—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using fluoroscopic examination, with visual observation or video transmission of fluoroscopic images
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24404—Interpolation using high frequency signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Signal Processing (AREA)
- Pathology (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Multimedia (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Optics & Photonics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Image Processing (AREA)
Abstract
Description
Claims (5)
- 용접부를 촬영한 방사선 영상의 중심픽셀 주변의 픽셀 데이터들의 평균값을 상기 중심픽셀의 데이터로 대치하여 상기 방사선 영상의 잡음을 제거하는 단계와;상기 방사선 영상을 S-Z변환하는 단계와;상기 방사선 영상 중에서 용접부위의 영상만을 선택하는 단계와;상기 선택된 영상을 이진화하기 위해 웨이블렛 함수의 척도를 계산하고 확정하는 단계와;웨이블렛 연산자와 확정된 척도를 이용하여 x방향과 y방향으로 0점을 지나는 영상정보를 검측하는 단계와;상기 검측된 영상정보가 x방향과 y방향으로 0점 교차가 존재하면 Log 연산자를 이용하여 원형결함을 추출하고, 상기 검측된 영상정보가 어느 한 방향으로 0점 교차가 존재하면 방향조절 연산자를 이용하여 띠형결함을 추출하는 단계를 포함하여 이루어지는 것을 특징으로 하는 용접부의 결함 자동 검측 방법.
- 제 1 항에 있어서, 상기 용접부위 영상을 선택한 후, 보간법을 이용하여 영상을 확대하는 단계를 더 포함하여 이루어지는 것을 특징으로 하는 용접부의 결함 자동 검측 방법.
- 제 1 항에 있어서, 상기 원형결함을 추출하는 단계는,x방향에서 검측한 지붕에지의 위치와 y방향에서 검측한 지붕에지 간의 교점을 구하는 단계와,상기 교점을 중심점으로 하여 원형결함이 존재할 수 있는 영역을 선택하고, 상기 원형결함이 존재하는 영역에 대하여 Log 연산자를 이용하여 컨볼루션 연산을 수행하는 단계와,상기 컨볼루션한 결과에 대하여 이진화 연산을 수행하여 원형결함 및 배경을 분리한 이진화 영상을 구하는 단계를 포함하여 이루어지는 것을 특징으로 하는 용접부의 결함 자동 검측 방법.
- 제 1 항에 있어서, 상기 띠형결함을 추출하는 단계는,상기 원형결함의 x방향에서 0점을 지나는 점을 제거하여 원형결함의 y방향의 0점을 지나는 점만 남게 하여 띠형결함의 중심점을 구하는 단계와,상기 띠형결함이 존재하는 영역을 선택하여 가느다란 선으로 이루어진 끊어진 형태의 균열결함을 방향조절 연산자를 이용하여 컨볼루션 연산을 수행하는 단계와,상기 컨볼루션한 결과에 대해 임계치를 적용하여 띠형결함과 배경이 분리된 이진화 영상을 구하는 단계와,상기 이진화 영상에서 형태학 연산을 수행하여 끊어진 선을 연결해 주는 단계를 포함하여 이루어지는 것을 특징으로 하는 용접부의 결함 자동 검측 방법.
- 제 1 항에 있어서, 상기 원형결함 또는 띠형결함을 제거한 후, 영상에 잔존하는 잡음을 그레이레벨 값의 평균을 이용하여 제거하는 단계를 더욱 포함하는 것을 특징으로 하는 용접부의 결함 자동 검측 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050020684A KR100615047B1 (ko) | 2005-03-11 | 2005-03-11 | 용접부의 결함 자동 검측 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050020684A KR100615047B1 (ko) | 2005-03-11 | 2005-03-11 | 용접부의 결함 자동 검측 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR100615047B1 true KR100615047B1 (ko) | 2006-08-22 |
Family
ID=37602938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050020684A KR100615047B1 (ko) | 2005-03-11 | 2005-03-11 | 용접부의 결함 자동 검측 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100615047B1 (ko) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180062761A (ko) | 2016-12-01 | 2018-06-11 | 삼성중공업 주식회사 | 용접 결함 방지 장치 |
CN112085700A (zh) * | 2020-07-31 | 2020-12-15 | 上海航天精密机械研究所 | X射线图像中焊缝区域的自动化提取方法、系统及介质 |
CN113850802A (zh) * | 2021-10-19 | 2021-12-28 | 内蒙古工业大学 | 基于matlab的焊接电弧特征谱线图像光谱数据自动提取方法 |
WO2022091543A1 (ja) * | 2020-10-28 | 2022-05-05 | パナソニックIpマネジメント株式会社 | リペア溶接区間検出方法およびリペア溶接区間検出装置 |
CN116309447A (zh) * | 2023-03-17 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | 一种基于深度学习的水坝斜坡裂缝检测方法 |
CN116681752A (zh) * | 2023-08-03 | 2023-09-01 | 山东墨氪智能科技有限公司 | Dbc焊料层空洞缺陷的空洞率计算方法及装置 |
CN117789132A (zh) * | 2024-02-27 | 2024-03-29 | 深圳市深创高科电子有限公司 | 基于计算机视觉的电子产品外壳缺陷监测方法及系统 |
-
2005
- 2005-03-11 KR KR1020050020684A patent/KR100615047B1/ko active IP Right Grant
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180062761A (ko) | 2016-12-01 | 2018-06-11 | 삼성중공업 주식회사 | 용접 결함 방지 장치 |
CN112085700A (zh) * | 2020-07-31 | 2020-12-15 | 上海航天精密机械研究所 | X射线图像中焊缝区域的自动化提取方法、系统及介质 |
CN112085700B (zh) * | 2020-07-31 | 2024-05-10 | 上海航天精密机械研究所 | X射线图像中焊缝区域的自动化提取方法、系统及介质 |
WO2022091543A1 (ja) * | 2020-10-28 | 2022-05-05 | パナソニックIpマネジメント株式会社 | リペア溶接区間検出方法およびリペア溶接区間検出装置 |
CN113850802A (zh) * | 2021-10-19 | 2021-12-28 | 内蒙古工业大学 | 基于matlab的焊接电弧特征谱线图像光谱数据自动提取方法 |
CN116309447A (zh) * | 2023-03-17 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | 一种基于深度学习的水坝斜坡裂缝检测方法 |
CN116309447B (zh) * | 2023-03-17 | 2024-01-05 | 水利部交通运输部国家能源局南京水利科学研究院 | 一种基于深度学习的水坝斜坡裂缝检测方法 |
CN116681752A (zh) * | 2023-08-03 | 2023-09-01 | 山东墨氪智能科技有限公司 | Dbc焊料层空洞缺陷的空洞率计算方法及装置 |
CN116681752B (zh) * | 2023-08-03 | 2023-10-27 | 山东墨氪智能科技有限公司 | Dbc焊料层空洞缺陷的空洞率计算方法及装置 |
CN117789132A (zh) * | 2024-02-27 | 2024-03-29 | 深圳市深创高科电子有限公司 | 基于计算机视觉的电子产品外壳缺陷监测方法及系统 |
CN117789132B (zh) * | 2024-02-27 | 2024-05-07 | 深圳市深创高科电子有限公司 | 基于计算机视觉的电子产品外壳缺陷监测方法及系统 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111310558B (zh) | 一种基于深度学习和图像处理法的路面病害智能提取方法 | |
KR100615047B1 (ko) | 용접부의 결함 자동 검측 방법 | |
Anand et al. | Flaw detection in radiographic weldment images using morphological watershed segmentation technique | |
CN105976352B (zh) | 一种基于灰度图像形态学的焊缝表面缺陷特征提取方法 | |
Nguyen et al. | An automatic approach for accurate edge detection of concrete crack utilizing 2D geometric features of crack | |
CN106780486B (zh) | 一种钢板表面缺陷图像提取方法 | |
CN113436168A (zh) | 一种用于工业焊缝x光图中的裂纹缺陷检测方法 | |
CN117351019B (zh) | 一种焊接缺陷检测方法 | |
CN116309600B (zh) | 基于图像处理的环保纺织品质量检测方法 | |
CN115719332A (zh) | 一种焊接质量检测方法 | |
CN115115642A (zh) | 基于图像处理的带钢结疤缺陷检测方法 | |
Rathod et al. | A comparative study of different segmentation techniques for detection of flaws in NDE weld images | |
JP4870016B2 (ja) | ひび割れ検出方法 | |
KR100687811B1 (ko) | 용접부 결함 검출 방법 및 장치 | |
CN103822932B (zh) | 基于多尺度滤波算子的x射线实时图像焊缝缺陷检出方法 | |
CN113588663B (zh) | 一种管线缺陷识别与信息提取方法 | |
CN115222736A (zh) | 一种基于霍夫空间的钢管生产质量检测方法 | |
CN109767426B (zh) | 一种基于图像特征识别的盾构隧道渗漏水检测方法 | |
Kamalakannan et al. | Spatial smoothing based segmentation method for internal defect detection in X-ray images of casting components | |
Abd Halim et al. | The geometrical feature of weld defect in assessing digital radiographic image | |
Al-Hameed | Segmentation of radiographic images of weld defect | |
JP5067677B2 (ja) | 欠陥検出方法、欠陥検出装置、及びプログラム | |
CN113393440B (zh) | 基于磁光成像的焊缝缺陷自动增强及识别方法 | |
CN113516608B (zh) | 轮胎的缺陷检测方法和检测装置、轮胎检测设备 | |
CN115330793A (zh) | 一种基于图像处理的液压硬管连接管接头质量检测方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20120813 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20130807 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20140813 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20150902 Year of fee payment: 10 |
|
FPAY | Annual fee payment |
Payment date: 20160727 Year of fee payment: 11 |
|
FPAY | Annual fee payment |
Payment date: 20170725 Year of fee payment: 12 |