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Frame-difference analysis of video-recorded laser-beam projections
Trondheim, Norway.
Umeå University, Faculty of Medicine, Department of Radiation Sciences.
Trondheim, Norway.
Trondheim, Norway.
2015 (English)In: Manual Therapy, ISSN 1356-689X, E-ISSN 1532-2769, Vol. 20, no 6, 879-883 p.Article in journal (Refereed) PublishedText
Abstract [en]

Laser beams have been applied in many human motion research contexts to project movements in specific motor tasks. Currently, there are no objective analysis methods for laser projection recordings. The principal aim of this study was to investigate the feasibility of quantifying motion by applying frame differencing and image analysis methods to video streams of laser beam projections. The laser projection was controlled by a mechanical device that produced pseudo random rotations. The 2D motion recorded by the video was compared with recordings obtained with an electromagnetic system where a sensor was fixed to the same device as the laser. High correlations in the time and frequency domains were found between the methods. We conclude that the proposed method can accurately quantify complex motion patterns from laser beam projections. (C) 2015 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 20, no 6, 879-883 p.
Keyword [en]
Human motion, Motor control, Kinematics, Movement analysis
National Category
Medical Biotechnology
Identifiers
URN: urn:nbn:se:umu:diva-119092DOI: 10.1016/j.math.2015.06.006ISI: 000372196300029OAI: oai:DiVA.org:umu-119092DiVA: diva2:919844
Available from: 2016-04-15 Created: 2016-04-11 Last updated: 2016-04-15Bibliographically approved

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Öhberg, Fredrik
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