Discontinuities detection in welded joints based on inverse surface thresholding
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Elsevier Ltd.
2014
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my.unimap-341912017-11-29T04:09:25Z Discontinuities detection in welded joints based on inverse surface thresholding Haniza, Yazid, Dr. Hamzah, Arof, Dr. Hafizal, Yazid Sahrim, Ahmad Abdul Aziz, Mohamed Fauzan, Ahmad haniza.yazid@gmail.com Fuzzy c means clustering Inverse surface thresholding Non-destructive testing Welded joints Link to publisher's homepage at http://www.sciencedirect.com/ Automated detection of welding defects in radiographic images becomes nontrivial when uneven illumination, contrast and noise are present. In this paper, a new approach using surface thresholding method is proposed to detect defects in radiographic images of welding joints. In the first stage, several image processing techniques namely fuzzy c means clustering, region filling, mean filtering, edge detection, Otsu thresholding, and morphological operations method are utilized to locate the area where defects might exist. This is followed by the construction of the inverse thresholding surface and its implementation to locate defects in the identified area. The proposed method was tested on 60 radiographic images and it obtained 94.6% sensitivity. Its performance is compared to that of the watershed segmentation, which obtained 69.6%. 2014-04-30T05:07:56Z 2014-04-30T05:07:56Z 2011 Article NDT and E International, vol. 44(7), 2011, pages 563-570 0963-8695 http://www.sciencedirect.com/science/article/pii/S0963869511000752 http://dspace.unimap.edu.my:80/dspace/handle/123456789/34191 http://dx.doi.org/10.1016/j.ndteint.2011.06.002 en Elsevier Ltd. |
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| language |
English |
| topic |
Fuzzy c means clustering Inverse surface thresholding Non-destructive testing Welded joints |
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Fuzzy c means clustering Inverse surface thresholding Non-destructive testing Welded joints Haniza, Yazid, Dr. Hamzah, Arof, Dr. Hafizal, Yazid Sahrim, Ahmad Abdul Aziz, Mohamed Fauzan, Ahmad Discontinuities detection in welded joints based on inverse surface thresholding |
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Link to publisher's homepage at http://www.sciencedirect.com/ |
| author2 |
haniza.yazid@gmail.com |
| author_facet |
haniza.yazid@gmail.com Haniza, Yazid, Dr. Hamzah, Arof, Dr. Hafizal, Yazid Sahrim, Ahmad Abdul Aziz, Mohamed Fauzan, Ahmad |
| format |
Article |
| author |
Haniza, Yazid, Dr. Hamzah, Arof, Dr. Hafizal, Yazid Sahrim, Ahmad Abdul Aziz, Mohamed Fauzan, Ahmad |
| author_sort |
Haniza, Yazid, Dr. |
| title |
Discontinuities detection in welded joints based on inverse surface thresholding |
| title_short |
Discontinuities detection in welded joints based on inverse surface thresholding |
| title_full |
Discontinuities detection in welded joints based on inverse surface thresholding |
| title_fullStr |
Discontinuities detection in welded joints based on inverse surface thresholding |
| title_full_unstemmed |
Discontinuities detection in welded joints based on inverse surface thresholding |
| title_sort |
discontinuities detection in welded joints based on inverse surface thresholding |
| publisher |
Elsevier Ltd. |
| publishDate |
2014 |
| url |
http://dspace.unimap.edu.my:80/dspace/handle/123456789/34191 |
| _version_ |
1643802753789591552 |