{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T04:49:30Z","timestamp":1768452570783,"version":"3.49.0"},"reference-count":52,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T00:00:00Z","timestamp":1638489600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005632","name":"National Centre for Research and Development","doi-asserted-by":"publisher","award":["Co-financed by EU, European Regional Development Fund, activity 1.3.1 \"Wsparcie projekt\u00f3w badawczo-rozwojowych w fazie preseed przez fundusze typu proof of concept - BRIdge Alfa pn. Epic Alfa Fundusz zaawansowanych technologii w fazie PoP i PoC\", ERC Ltd."],"award-info":[{"award-number":["Co-financed by EU, European Regional Development Fund, activity 1.3.1 \"Wsparcie projekt\u00f3w badawczo-rozwojowych w fazie preseed przez fundusze typu proof of concept - BRIdge Alfa pn. Epic Alfa Fundusz zaawansowanych technologii w fazie PoP i PoC\", ERC Ltd."]}],"id":[{"id":"10.13039\/501100005632","id-type":"DOI","asserted-by":"publisher"}]},{"name":"CBC Programme Poland-Belarus-Ukraine","award":["PBU1\/0508\/16"],"award-info":[{"award-number":["PBU1\/0508\/16"]}]},{"name":"Bieszczady National Park","award":["Own resources."],"award-info":[{"award-number":["Own resources."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Recent advances in search and rescue methods include the use of unmanned aerial vehicles (UAVs), to carry out aerial monitoring of terrains to spot lost individuals. To date, such searches have been conducted by human observers who view UAV-acquired videos or images. Alternatively, lost persons may be detected by automated algorithms. Although some algorithms are implemented in software to support search and rescue activities, no successful rescue case using automated human detectors has been reported on thus far in the scientific literature. This paper presents a report from a search and rescue mission carried out by Bieszczady Mountain Rescue Service near the village of Cergowa in SE Poland, where a 65-year-old man was rescued after being detected via use of SARUAV software. This software uses convolutional neural networks to automatically locate people in close-range nadir aerial images. The missing man, who suffered from Alzheimer\u2019s disease (as well as a stroke the previous day) spent more than 24 h in open terrain. SARUAV software was allocated to support the search, and its task was to process 782 nadir and near-nadir JPG images collected during four photogrammetric flights. After 4 h 31 min of the analysis, the system successfully detected the missing person and provided his coordinates (uploading 121 photos from a flight over a lost person; image processing and verification of hits lasted 5 min 48 s). The presented case study proves that the use of an UAV assisted by SARUAV software may quicken the search mission.<\/jats:p>","DOI":"10.3390\/rs13234903","type":"journal-article","created":{"date-parts":[[2021,12,6]],"date-time":"2021-12-06T03:10:38Z","timestamp":1638760238000},"page":"4903","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["First Successful Rescue of a Lost Person Using the Human Detection System: A Case Study from Beskid Niski (SE Poland)"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8236-9861","authenticated-orcid":false,"given":"Tomasz","family":"Niedzielski","sequence":"first","affiliation":[{"name":"SARUAV Ltd., pl. Uniwersytecki 1, 50-137 Wroc\u0142aw, Poland"},{"name":"Faculty of Earth Sciences and Environmental Management, University of Wroc\u0142aw, pl. Uniwersytecki 1, 50-137 Wroc\u0142aw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2672-3090","authenticated-orcid":false,"given":"Miros\u0142awa","family":"Jurecka","sequence":"additional","affiliation":[{"name":"SARUAV Ltd., pl. Uniwersytecki 1, 50-137 Wroc\u0142aw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4685-7301","authenticated-orcid":false,"given":"Bart\u0142omiej","family":"Mizi\u0144ski","sequence":"additional","affiliation":[{"name":"SARUAV Ltd., pl. Uniwersytecki 1, 50-137 Wroc\u0142aw, Poland"}]},{"given":"Wojciech","family":"Pawul","sequence":"additional","affiliation":[{"name":"Bieszczady Mountain Rescue Service, ul. Mickiewicza 49, 38-500 Sanok, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6254-4642","authenticated-orcid":false,"given":"Tomasz","family":"Motyl","sequence":"additional","affiliation":[{"name":"Faculty of Earth Sciences and Environmental Management, University of Wroc\u0142aw, pl. Uniwersytecki 1, 50-137 Wroc\u0142aw, Poland"},{"name":"Jura Mountain Rescue Service, Podlesice 5, 42-425 Kroczyce, Poland"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1006\/jevp.1998.0093","article-title":"Characteristics of travel by persons lost in Albertan Wilderness Areas","volume":"18","author":"Heth","year":"1998","journal-title":"J. Environ. Psychol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1080\/19475705.2016.1238853","article-title":"A procedure for delineating a search region in the UAV-based SAR activities","volume":"8","author":"Jurecka","year":"2017","journal-title":"Geomat. Nat. Hazards Risk"},{"key":"ref_3","unstructured":"Koester, R. (2008). 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