{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T14:18:38Z","timestamp":1768745918425,"version":"3.49.0"},"reference-count":54,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2024,2,10]],"date-time":"2024-02-10T00:00:00Z","timestamp":1707523200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"BRIDGE","award":["40B2-0_194794\/1"],"award-info":[{"award-number":["40B2-0_194794\/1"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Gait abnormalities in older adults are linked to increased risks of falls, institutionalization, and mortality, necessitating accurate and frequent gait assessments beyond traditional clinical settings. Current methods, such as pressure-sensitive walkways, often lack the continuous natural environment monitoring needed to understand an individual\u2019s gait fully during their daily activities. To address this gap, we present a Lidar-based method capable of unobtrusively and continuously tracking human leg movements in diverse home-like environments, aiming to match the accuracy of a clinical reference measurement system. We developed a calibration-free step extraction algorithm based on mathematical morphology to realize Lidar-based gait analysis. Clinical gait parameters of 45 healthy individuals were measured using Lidar and reference systems (a pressure-sensitive walkway and a video recording system). Each participant participated in three predefined ambulation experiments by walking over the walkway. We observed linear relationships with strong positive correlations (R2&gt;0.9) between the values of the gait parameters (step and stride length, step and stride time, cadence, and velocity) measured with the Lidar sensors and the pressure-sensitive walkway reference system. Moreover, the lower and upper 95% confidence intervals of all gait parameters were tight. The proposed algorithm can accurately derive gait parameters from Lidar data captured in home-like environments, with a performance not significantly less accurate than clinical reference systems.<\/jats:p>","DOI":"10.3390\/s24041172","type":"journal-article","created":{"date-parts":[[2024,2,12]],"date-time":"2024-02-12T03:50:27Z","timestamp":1707709827000},"page":"1172","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A Transferable Lidar-Based Method to Conduct Contactless Assessments of Gait Parameters in Diverse Home-like Environments"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4883-9484","authenticated-orcid":false,"given":"Michael","family":"Single","sequence":"first","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0789-0048","authenticated-orcid":false,"given":"Lena C.","family":"Bruhin","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3818-5242","authenticated-orcid":false,"given":"Aaron","family":"Colombo","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-1822-2012","authenticated-orcid":false,"given":"Kevin","family":"M\u00f6ri","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6730-0652","authenticated-orcid":false,"given":"Stephan M.","family":"Gerber","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-7189-9738","authenticated-orcid":false,"given":"Jacob","family":"Lahr","sequence":"additional","affiliation":[{"name":"University Hospital of Old Age Psychiatry and Psychotherapy, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3508-7295","authenticated-orcid":false,"given":"Paul","family":"Krack","sequence":"additional","affiliation":[{"name":"Department of Neurology, Inselspital, University Hospital Bern, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6452-9964","authenticated-orcid":false,"given":"Stefan","family":"Kl\u00f6ppel","sequence":"additional","affiliation":[{"name":"University Hospital of Old Age Psychiatry and Psychotherapy, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6990-4188","authenticated-orcid":false,"given":"Ren\u00e9 M.","family":"M\u00fcri","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4791-6927","authenticated-orcid":false,"given":"Urs P.","family":"Mosimann","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8069-9450","authenticated-orcid":false,"given":"Tobias","family":"Nef","sequence":"additional","affiliation":[{"name":"Gerontechnology and Rehabilitation Group, ARTORG Center for Biomedical Engineering Research, University of Bern, 3012 Bern, Switzerland"},{"name":"Department of Neurology, Inselspital, University Hospital Bern, University of Bern, 3012 Bern, Switzerland"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1111\/j.1532-5415.2005.00580.x","article-title":"Epidemiology of gait disorders in community-residing older adults","volume":"54","author":"Verghese","year":"2006","journal-title":"J. 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