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The facial skin temperature can be remotely measured using infrared thermography, and it has recently attracted attention as a remote biomarker. For example, studies have been reported to estimate human emotions, drowsiness, and mental stress on facial skin temperature. However, it is impossible to make a machine that can discriminate all infinite physiological and psychological states. Considering the practicality of skin temperature, a machine that can determine the normal state of facial skin temperature may be sufficient. In this study, we propose a completely new approach to incorporate the concept of anomaly detection into the analysis of physiological and psychological states by facial skin temperature. In this paper, the method for separating normal and anomaly facial thermal images using an anomaly detection model was investigated to evaluate the applicability of variational autoencoder (VAE) to facial thermal images.<\/jats:p>","DOI":"10.1007\/s10015-020-00634-2","type":"journal-article","created":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T11:52:52Z","timestamp":1599738772000},"page":"122-128","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Anomaly detection in facial skin temperature using variational autoencoder"],"prefix":"10.1007","volume":"26","author":[{"given":"Ayaka","family":"Masaki","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kent","family":"Nagumo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bikash","family":"Lamsal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kosuke","family":"Oiwa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akio","family":"Nozawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,9,9]]},"reference":[{"issue":"10","key":"634_CR1","doi-asserted-by":"publisher","first-page":"951","DOI":"10.1111\/psyp.12243","volume":"51","author":"S Loannou","year":"2014","unstructured":"Loannou S, Gallese V, Merla A (2014) Thermal infrared imaging in psychophysiology: potentialities and limits. 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