{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,26]],"date-time":"2026-04-26T17:04:59Z","timestamp":1777223099796,"version":"3.51.4"},"reference-count":25,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2014,10,27]],"date-time":"2014-10-27T00:00:00Z","timestamp":1414368000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Laser pointers are one of the most widely used interactive and pointing devices in different human-computer interaction systems. Existing approaches to vision-based laser spot tracking are designed for controlled indoor environments with the main assumption that the laser spot is very bright, if not the brightest, spot in images. In this work, we are interested in developing a method for an outdoor, open-space environment, which could be implemented on embedded devices with limited computational resources. Under these circumstances, none of the assumptions of existing methods for laser spot tracking can be applied, yet a novel and fast method with robust performance is required. Throughout the paper, we will propose and evaluate an efficient method based on modified circular Hough transform and Lucas\u2013Kanade motion analysis. Encouraging results on a representative dataset demonstrate the potential of our method in an uncontrolled outdoor environment, while achieving maximal accuracy indoors. Our dataset and ground truth data are made publicly available for further development.<\/jats:p>","DOI":"10.3390\/s141120112","type":"journal-article","created":{"date-parts":[[2014,10,27]],"date-time":"2014-10-27T11:38:09Z","timestamp":1414409889000},"page":"20112-20133","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Laser Spot Tracking Based on Modified Circular Hough Transform and Motion Pattern Analysis"],"prefix":"10.3390","volume":"14","author":[{"given":"Damir","family":"Krstini\u0107","sequence":"first","affiliation":[{"name":"Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R. Bo\u0161kovi\u0107a 32, Split 21000, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana","family":"Skelin","sequence":"additional","affiliation":[{"name":"Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R. Bo\u0161kovi\u0107a 32, Split 21000, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivan","family":"Milati\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R. 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Orlando, FL, USA."},{"key":"ref_4","first-page":"423","article-title":"Detecting laser spot in shooting simulator using an embedded camera","volume":"7","author":"Soetedjo","year":"2014","journal-title":"Int. J. Smart Sens. Intell. Syst."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1109\/TRO.2012.2228134","article-title":"The impact of human-robot interfaces on the learning of visual objects","volume":"29","author":"Rouanet","year":"2013","journal-title":"IEEE Trans. Robot."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1928","DOI":"10.1016\/j.patrec.2013.03.023","article-title":"Shape recognition of laser beam trace for human-robot interface","volume":"34","author":"Tsujimura","year":"2013","journal-title":"Pattern Recognit. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Shibata, S., Yamamoto, T., and Jindai, M. (2011, January 20\u201322). Human-robot interface with instruction of neck movement using laser pointer. Kyoto, Japan.","DOI":"10.1109\/SII.2011.6147624"},{"key":"ref_8","first-page":"407","article-title":"Hybrid laser pointer detection algorithm based on template matching and fuzzy rule-based systems for domotic control in real home environments","volume":"36","author":"Olague","year":"2010","journal-title":"Appl. Intell."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1016\/j.entcs.2011.11.031","article-title":"Robust range finder through a laser pointer and a webcam","volume":"281","year":"2011","journal-title":"Electron. Notes Theor. Comput. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Wang, B., Wu, L., and Wang, X. (2011, January 4). Laser spot tracking with sub-pixel precision based on subdivision mesh. Guilin, China.","DOI":"10.1117\/12.911827"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1007\/978-1-4614-2185-6_6","article-title":"A Method of Detection and Tracking for Laser Spot","volume":"Volume 135","author":"Sun","year":"2012","journal-title":"Measuring Technology and Mechatronics Automation in Electrical Engineering"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1288","DOI":"10.1016\/j.optlastec.2006.07.013","article-title":"Laser spot location method for a laser pointer interaction application using a diffractive optical element","volume":"39","author":"Kuo","year":"2007","journal-title":"Opt. Laser Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"690","DOI":"10.1016\/j.ijhcs.2012.05.009","article-title":"MultiPoint: Comparing laser and manual pointing as remote input in large display interactions","volume":"70","author":"Banerjee","year":"2012","journal-title":"Int. J. Hum. Comput. Stud."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Myers, B.A., Bhatnagar, R., Nichols, J., Peck, C.H., Kong, D., Miller, R., and Long, A.C. (2002, January 20\u201325). Interacting at a distance: Measuring the performance of laser pointers and other devices. Minneapolis, MN, USA.","DOI":"10.1145\/503376.503383"},{"key":"ref_15","first-page":"845","article-title":"Vision based laser pointer interaction for flexible screens","volume":"Volume 4551","author":"Kim","year":"2007","journal-title":"Human-Computer Interaction. Interaction Platforms and Techniques"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"690","DOI":"10.1109\/TPAMI.1987.4767964","article-title":"The Adaptive Hough Transform","volume":"9","author":"Illingworth","year":"1987","journal-title":"IEEE Trans. Pattern Anal. Mach. Intell."},{"key":"ref_17","unstructured":"Breitenstein, M.D., Reichlin, F., Leibe, B., Koller-Meier, E., and van Gool, L. (October, January 29). Robust tracking-by-detection using a detector confidence particle filter. Kyoto, Japan."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1016\/j.patcog.2007.05.017","article-title":"A real-time object detecting and tracking system for outdoor night surveillance","volume":"41","author":"Huanh","year":"2008","journal-title":"Pattern Recognit."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"623","DOI":"10.1016\/S0262-8856(03)00059-3","article-title":"Target tracking in airborne forward looking infrared imagery","volume":"21","author":"Yilmaz","year":"2003","journal-title":"Image Vis. Comput."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1109\/TITS.2004.838222","article-title":"Pedestrian detection and tracking with night vision","volume":"6","author":"Xu","year":"2005","journal-title":"IEEE Trans. Intell. Transp. Syst."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1453","DOI":"10.1007\/s11340-014-9930-y","article-title":"A Digital Image Correlation Method for Tracking Planar Motions of Rigid Spheres: Application To Medium Velocity Impacts","volume":"54","author":"Passieux","year":"2014","journal-title":"Exp. Mech."},{"key":"ref_22","unstructured":"Shi, J., and Tomasi, C. (1994, January 21\u201323). Good Features to Track. Seattle, WA, USA."},{"key":"ref_23","unstructured":"Bouguet, J. Pyramidal Implementation of the Lucas Kanade Feature Tracker. Available online: http:\/\/robots.stanford.edu\/cs223b04\/algo_trackingpdf."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1023\/B:VISI.0000011205.11775.fd","article-title":"Lucas-Kanade 20 Years on: A Unifying Framework","volume":"56","author":"Baker","year":"2004","journal-title":"Int. J. Comput. Vis."},{"key":"ref_25","unstructured":"Krstini\u0107, D., Kuzmani\u0107 Skelin, A., and Milati\u0107, I. Laser Spot Tracking Based on Modified Circular Hough Transform and Motion Pattern Analysis. Available online: http:\/\/popaj.fesb.hr\/lptracking."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/11\/20112\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:17:26Z","timestamp":1760217446000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/11\/20112"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,10,27]]},"references-count":25,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2014,11]]}},"alternative-id":["s141120112"],"URL":"https:\/\/doi.org\/10.3390\/s141120112","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,10,27]]}}}