{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T21:32:19Z","timestamp":1778275939757,"version":"3.51.4"},"reference-count":19,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T00:00:00Z","timestamp":1629676800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["PRODUTECH4SC - POCI-01-0247-FEDER-40804610"],"award-info":[{"award-number":["PRODUTECH4SC - POCI-01-0247-FEDER-40804610"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MTI"],"abstract":"<jats:p>Augmented and virtual reality have been experiencing rapid growth in recent years, but there is still no deep knowledge regarding their capabilities and in what fields they could be explored. In that sense, this paper presents a study on the accuracy and repeatability of Microsoft\u2019s HoloLens 2 (augmented reality device) and HTC Vive (virtual reality device) using an OptiTrack system as ground truth. For the HoloLens 2, the method used was hand tracking, whereas, in HTC Vive, the object tracked was the system\u2019s hand controller. A series of tests in different scenarios and situations were performed to explore what could influence the measures. The HTC Vive obtained results in the millimeter range, while the HoloLens 2 revealed not very accurate measurements (around 2 cm). Although the difference can seem to be considerable, the fact that HoloLens 2 was tracking the user\u2019s hand and not the system\u2019s controller made a huge impact. The results are considered a significant step for the ongoing project of developing a human\u2013robot interface by demonstrating an industrial robot using extended reality, which shows great potential to succeed based on our data.<\/jats:p>","DOI":"10.3390\/mti5080047","type":"journal-article","created":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T10:24:17Z","timestamp":1629714257000},"page":"47","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":46,"title":["Accuracy and Repeatability Tests on HoloLens 2 and HTC Vive"],"prefix":"10.3390","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2690-1002","authenticated-orcid":false,"given":"In\u00eas","family":"Soares","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, Faculdade de Engenharia da Universidade do Porto, FEUP, 4200-465 Porto, Portugal"},{"name":"INESC TEC\u2014Institute for Systems and Computer Engineering, Technology and Science, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4537-5095","authenticated-orcid":false,"given":"Ricardo","family":"B. Sousa","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, Faculdade de Engenharia da Universidade do Porto, FEUP, 4200-465 Porto, Portugal"},{"name":"INESC TEC\u2014Institute for Systems and Computer Engineering, Technology and Science, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7023-8562","authenticated-orcid":false,"given":"Marcelo","family":"Petry","sequence":"additional","affiliation":[{"name":"INESC TEC\u2014Institute for Systems and Computer Engineering, Technology and Science, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8573-3147","authenticated-orcid":false,"given":"Ant\u00f3nio Paulo","family":"Moreira","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, Faculdade de Engenharia da Universidade do Porto, FEUP, 4200-465 Porto, Portugal"},{"name":"INESC TEC\u2014Institute for Systems and Computer Engineering, Technology and Science, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1007\/s12008-013-0191-2","article-title":"A novel augmented reality-based interface for robot path planning","volume":"8","author":"Fang","year":"2014","journal-title":"Int. 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