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Advances in photogrammetry for digital hand surface capture in swimming performance study

Chong, Albert K. and Majid, Zulkepli and Setan, Halim and Ahmad, Anuar (2006) Advances in photogrammetry for digital hand surface capture in swimming performance study. In: International Symposium and Exhibition on Geoinformation 2006, 19-21 Sept 2006, Shah Alam, Selangor.

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Abstract

The paper describes an application of close-range photogrammetry in the study of the human hand for propulsion in competitive swimming. The study involved the capture of 3-D surface data and modelling of a real and a replica hand. Both real and replica models were used in computer simulation to determine the propulsion parameters for high performance swimming. Custom-made control frame was used to provide accurate object-space control of the stereo-photography. In addition, the control frame was used to connect both sides of the hand into one coordinate system. A two-camera and a four-camera configuration were developed for the photography. The latter was used in the real hand photography and under-water stereo-photography. Results of the study showed that the surface of the replica has an undulating roughness of about 1.0 mm. However, the total error of the computed surface area was less than 1.5 cm2 or 0.85%. Consequently, the error of the surface topography of the replica was negligible and the resulted error in the computation of the propulsion parameters was minimal.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Crawl swimming, replica hand, stereo-photography, underwater photography
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:1731
Deposited By: En. Tajul Ariffin Musa
Deposited On:14 Mar 2007 00:55
Last Modified:01 Jun 2010 02:57

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