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Surv."],"published-print":{"date-parts":[[2020,3,31]]},"abstract":"<jats:p>The way people walk is a strong correlate of their identity. Several studies have shown that both humans and machines can recognize individuals just by their gait, given that proper measurements of the observed motion patterns are available. For surveillance applications, gait is also attractive, because it does not require active collaboration from users and is hard to fake. However, the acquisition of good-quality measures of a person\u2019s motion patterns in unconstrained environments, (e.g., in person re-identification applications) has proved very challenging in practice. Existing technology (video cameras) suffer from changes in viewpoint, daylight, clothing, accessories, and other variations in the person\u2019s appearance. Novel three-dimensional sensors are bringing new promises to the field, but still many research issues are open. This article presents a survey of the work done in gait analysis for re-identification in the past decade, looking at the main approaches, datasets, and evaluation methodologies. We identify several relevant dimensions of the problem and provide a taxonomic analysis of the current state of the art. Finally, we discuss the levels of performance achievable with the current technology and give a perspective of the most challenging and promising directions of research for the future.<\/jats:p>","DOI":"10.1145\/3243043","type":"journal-article","created":{"date-parts":[[2019,4,29]],"date-time":"2019-04-29T17:12:14Z","timestamp":1556557934000},"page":"1-34","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":85,"title":["Gait-based Person Re-identification"],"prefix":"10.1145","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4957-5804","authenticated-orcid":false,"given":"Athira","family":"Nambiar","sequence":"first","affiliation":[{"name":"Institute for Systems and Robotics, Instituto Superior T\u00e9cnico, Lisbon, Portugal"}]},{"given":"Alexandre","family":"Bernardino","sequence":"additional","affiliation":[{"name":"Institute for Systems and Robotics, Instituto Superior T\u00e9cnico, Lisbon, Portugal"}]},{"given":"Jacinto C.","family":"Nascimento","sequence":"additional","affiliation":[{"name":"Institute for Systems and Robotics, Instituto Superior T\u00e9cnico, Lisbon, Portugal"}]}],"member":"320","published-online":{"date-parts":[[2019,4,26]]},"reference":[{"key":"e_1_2_1_1_1","volume-title":"Forensic Face Recognition: A Survey","author":"Ali Tauseef","unstructured":"Tauseef Ali , Luuk Spreeuwers , and Raymond Veldhuis . 2012. 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