{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T23:34:51Z","timestamp":1772580891945,"version":"3.50.1"},"reference-count":31,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,1,22]],"date-time":"2023-01-22T00:00:00Z","timestamp":1674345600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["NRF-2022R1A2C1011413"],"award-info":[{"award-number":["NRF-2022R1A2C1011413"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["S3249835"],"award-info":[{"award-number":["S3249835"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004085","name":"Ministry of SMEs and Startups (MSS, Korea)","doi-asserted-by":"publisher","award":["NRF-2022R1A2C1011413"],"award-info":[{"award-number":["NRF-2022R1A2C1011413"]}],"id":[{"id":"10.13039\/501100004085","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004085","name":"Ministry of SMEs and Startups (MSS, Korea)","doi-asserted-by":"publisher","award":["S3249835"],"award-info":[{"award-number":["S3249835"]}],"id":[{"id":"10.13039\/501100004085","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Among the non-destructive testing (NDT) techniques, infrared thermography (IRT) is an attractive and highly reliable technology that can measure the thermal response of a wide area in real-time. In this study, thinning defects in S275 specimens were detected using lock-in thermography (LIT). After acquiring phase and amplitude images using four-point signal processing, the optimal excitation frequency was calculated. After segmentation was performed on each defect area, binarization was performed using the Otsu algorithm. For automated detection, the boundary tracking algorithm was used. The number of pixels was calculated and the detectability using RMSE was evaluated. Clarification of defective objects using image segmentation detectability evaluation technique using RMSE was presented.<\/jats:p>","DOI":"10.3390\/s23031281","type":"journal-article","created":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T01:36:26Z","timestamp":1674437786000},"page":"1281","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Automatic Thinning Detection through Image Segmentation Using Equivalent Array-Type Lamp-Based Lock-in Thermography"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7384-9158","authenticated-orcid":false,"given":"Seungju","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Future Convergence Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk-gu, Cheonan-si 31080, Republic of Korea"}]},{"given":"Yoonjae","family":"Chung","sequence":"additional","affiliation":[{"name":"Eco-Sustainable Energy Research Institute, Kongju National University, 1223-24 Cheonan-Daero, Seobuk-gu, Cheonan-si 31080, Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4602-8696","authenticated-orcid":false,"given":"Chunyoung","family":"Kim","sequence":"additional","affiliation":[{"name":"enesG, 8, Techno 10-ro, Yuseong-gu, Daejeon 34026, Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9547-3868","authenticated-orcid":false,"given":"Wontae","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Future Convergence Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk-gu, Cheonan-si 31080, Republic of Korea"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"389","DOI":"10.7779\/JKSNT.2020.40.6.389","article-title":"A Study on the Nondestructive Evaluation Method for Detecting Void in Containment Liner Plate","volume":"40","author":"Choi","year":"2020","journal-title":"J. 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