{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T17:43:58Z","timestamp":1790531038951,"version":"4.1.0"},"reference-count":44,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T00:00:00Z","timestamp":1616544000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100019170","name":"Cabildo de Tenerife","doi-asserted-by":"publisher","award":["TF INNOVA 2016-2021"],"award-info":[{"award-number":["TF INNOVA 2016-2021"]}],"id":[{"id":"10.13039\/501100019170","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This work presents a revision of four different registration methods for thermal infrared and visible images captured by a camera-based prototype for the remote monitoring of diabetic foot. This prototype uses low cost and off-the-shelf available sensors in thermal infrared and visible spectra. Four different methods (Geometric Optical Translation, Homography, Iterative Closest Point, and Affine transform with Gradient Descent) have been implemented and analyzed for the registration of images obtained from both sensors. All four algorithms\u2019 performances were evaluated using the Simultaneous Truth and Performance Level Estimation (STAPLE) together with several overlap benchmarks as the Dice coefficient and the Jaccard index. The performance of the four methods has been analyzed with the subject at a fixed focal plane and also in the vicinity of this plane. The four registration algorithms provide suitable results both at the focal plane as well as outside of it within 50 mm margin. The obtained Dice coefficients are greater than 0.950 in all scenarios, well within the margins required for the application at hand. A discussion of the obtained results under different distances is presented along with an evaluation of its robustness under changing conditions.<\/jats:p>","DOI":"10.3390\/s21072264","type":"journal-article","created":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T21:36:51Z","timestamp":1616621811000},"page":"2264","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Assessment of Registration Methods for Thermal Infrared and Visible Images for Diabetic Foot Monitoring"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7830-4248","authenticated-orcid":false,"given":"Sara","family":"Gonz\u00e1lez-P\u00e9rez","sequence":"first","affiliation":[{"name":"Industrial Engineering Department, Faculty of Engineering and Technology, University of La Laguna, 38200 San Crist\u00f3bal de La Laguna, Spain"},{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1838-5327","authenticated-orcid":false,"given":"Daniel","family":"Perea Str\u00f6m","sequence":"additional","affiliation":[{"name":"Computer Science and Systems Department, University of La Laguna, 38200 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1645-0810","authenticated-orcid":false,"given":"Natalia","family":"Arteaga-Marrero","sequence":"additional","affiliation":[{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos","family":"Luque","sequence":"additional","affiliation":[{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2865-0553","authenticated-orcid":false,"given":"Ignacio","family":"Sidrach-Cardona","sequence":"additional","affiliation":[{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1028-6957","authenticated-orcid":false,"given":"Enrique","family":"Villa","sequence":"additional","affiliation":[{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3545-2328","authenticated-orcid":false,"given":"Juan","family":"Ruiz-Alzola","sequence":"additional","affiliation":[{"name":"IACTEC Medical Technology Group, Instituto de Astrof\u00edsica de Canarias (IAC), 38205 San Crist\u00f3bal de La Laguna, Spain"},{"name":"Research Institute of Biomedical and Health Sciences (IUIBS), Universidad de Las Palmas de Gran Canaria, 35016 Las Palmas de Gran Canaria, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,24]]},"reference":[{"key":"ref_1","unstructured":"International Diabetes Federation (2019). 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