Exploiting HD camcorders for close-up human movement applications

Chong, Albert K. (2012) Exploiting HD camcorders for close-up human movement applications. Photogrammetric Record, 27 (138). pp. 227-237. ISSN 0031-868X

Abstract

Lately, the cost of HD video camcorders has decreased greatly and the inclusion of an internal hard disk in many models has eased the bother of downloading video clips from cumbersome tape devices. These factors have increased their potential as 3D recording devices and measurement tools for the health monitoring of patients by practitioners. This investigation determined: (1) the 3D measurement quality of off-the-shelf high definition camcorders for human-movement-related medical applications; (2) the suitability of a low-cost LED synchronisation device for multi-camcorder tracking; and (3) the suitability of these imaging sensors for practitioners. The results show that a four-camcorder system is capable of measuring a 3D distance in a static setting to better than 0Æ050mm; it can track a moving calibrated square-wave signal of 0Æ5 and 1 Hz to better than 0Æ3 and 0Æ2mm, respectively. Using a calibrated scale bar mounted on a moving human leg, the error produced as a result of frame disparity using a low-cost LED frame-synchronising device was under 0Æ3mm for a four-, three- and two-camcorder configuration.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Dr Albert Kon-Fook Chong
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 25 Nov 2012 05:09
Last Modified: 26 Sep 2013 05:52
Uncontrolled Keywords: HD camcorder; human movement tracking; practitioner; video frame; synchronisation; videogrammetry synchronisation; videogrammetry
Fields of Research (FOR2008): 09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified
09 Engineering > 0903 Biomedical Engineering > 090303 Biomedical Instrumentation
08 Information and Computing Sciences > 0801 Artificial Intelligence and Image Processing > 080106 Image Processing
Socio-Economic Objective (SEO2008): C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified
Identification Number or DOI: doi: 10.1111/j.1477-9730.2012.00673.x
URI: http://eprints.usq.edu.au/id/eprint/21232

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