{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T06:34:58Z","timestamp":1769754898737,"version":"3.49.0"},"reference-count":51,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,7]],"date-time":"2022-01-07T00:00:00Z","timestamp":1641513600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002241","name":"Japan Science and Technology Agency","doi-asserted-by":"publisher","award":["PRESTO JPMJPR187A"],"award-info":[{"award-number":["PRESTO JPMJPR187A"]}],"id":[{"id":"10.13039\/501100002241","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We propose a markerless image alignment method for pressure-sensitive paint measurement data replacing the time-consuming conventional alignment method in which the black markers are placed on the model and are detected manually. In the proposed method, feature points are detected by a boundary detection method, in which the PSP boundary is detected using the Moore-Neighbor tracing algorithm. The performance of the proposed method is compared with the conventional method based on black markers, the difference of Gaussian (DoG) detector, and the Hessian corner detector. The results by the proposed method and the DoG detector are equivalent to each other. On the other hand, the performances of the image alignment using the black marker and the Hessian corner detector are slightly worse compared with the DoG and the proposed method. The computational cost of the proposed method is half of that of the DoG method. The proposed method is a promising for the image alignment in the PSP application in the viewpoint of the alignment precision and computational cost.<\/jats:p>","DOI":"10.3390\/s22020453","type":"journal-article","created":{"date-parts":[[2022,1,9]],"date-time":"2022-01-09T23:08:26Z","timestamp":1641769706000},"page":"453","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Markerless Image Alignment Method for Pressure-Sensitive Paint Image"],"prefix":"10.3390","volume":"22","author":[{"given":"Kyosuke","family":"Suzuki","sequence":"first","affiliation":[{"name":"Department of Modern Mechanical Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1905-8619","authenticated-orcid":false,"given":"Tomoki","family":"Inoue","sequence":"additional","affiliation":[{"name":"Department of Modern Mechanical Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3644-4888","authenticated-orcid":false,"given":"Takayuki","family":"Nagata","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Tohoku University, 6-6-01 Aoba, Arakaki, Aoba-ku, Sendai 980-8579, Miyagi, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4390-781X","authenticated-orcid":false,"given":"Miku","family":"Kasai","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Tohoku University, 6-6-01 Aoba, Arakaki, Aoba-ku, Sendai 980-8579, Miyagi, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7739-7104","authenticated-orcid":false,"given":"Taku","family":"Nonomura","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Tohoku University, 6-6-01 Aoba, Arakaki, Aoba-ku, Sendai 980-8579, Miyagi, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2063-9085","authenticated-orcid":false,"given":"Yu","family":"Matsuda","sequence":"additional","affiliation":[{"name":"Department of Modern Mechanical Engineering, Waseda University, 3-4-1 Ookubo, Shinjuku-ku, Tokyo 169-8555, Japan"},{"name":"Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi 332-0012, Saitama, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1115\/1.3101703","article-title":"Temperature- and Pressure-Sensitive Luminescent Paints in Aerodynamics","volume":"50","author":"Liu","year":"1997","journal-title":"Appl. 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