Compensation of measurement errors caused by glass refraction for photogrammetric plantar surface mapping

Al-Baghdadi, Jasim Ahmed Ali and Chong, Albert K. and Alshadli, Duaa (2013) Compensation of measurement errors caused by glass refraction for photogrammetric plantar surface mapping. Photogrammetric Record , 28 (143). pp. 261-275. ISSN 0031-868X


Mapping the human plantar (sole) surface during movement using an optical imaging technique often necessitates the use of a stage made of transparent material so that the human subject's gait can be imaged in a natural way, without obstruction. This research investigates a technique to reduce glass refraction distortion in the captured 3D spatial data. Impurities in the glass produce outliers in the calculated distortion values which were detected using an automated slope gradient technique. A point-based moving averaging technique was utilised to determine the most appropriate distortion correction to replace the removed outliers. The results show that the empirical methods developed provide accurate glass refraction corrections for photogrammetric measurements, highlighted using the 3D foot plantar surface captured during various phases of a person's gait.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: First published online 4 Jun 2013. © 2013 The Authors, The Remote Sensing and Photogrammetry Society and John Wiley & Sons Ltd. Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 02 Aug 2013 02:12
Last Modified: 04 Nov 2014 01:52
Uncontrolled Keywords: gait; glass refraction; human plantar surface; medical photogrammetry
Fields of Research : 10 Technology > 1004 Medical Biotechnology > 100402 Medical Biotechnology Diagnostics (incl. Biosensors)
09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
11 Medical and Health Sciences > 1116 Medical Physiology > 111602 Human Biophysics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1111/phor.12019

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