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Three dimensional craniofacial anthropometry using stereophotogrammetry: validation of the technique

Majid, Zulkepli and Chong, Albert K. and Setan, Halim and Ahmad, Anuar (2005) Three dimensional craniofacial anthropometry using stereophotogrammetry: validation of the technique. In: International Symposium & Exhibition on Geoinformation 2005 Geospatial Solutions for Managing the Borderless World,, 27 – 29.9.05, Pulau Pinang.

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Abstract

Craniofacial anthropometric mark mapping was performed using stereo-photogrammetry technique. Various size and shape of control frames were designed to provide three-dimensional object-space control for stereo images. A research was carried out to determine whether the accuracy could be further enhanced using natural points. In the research, control points and natural points were measured using precision software and their coordinates computed via bundle adjustment technique. In addition, the six-camera stereo-photogrammetric system was electronically synchronized for optimum accuracy. Subsequently, Digital Video Plotter (DVP) digital photogrammetric workstation was used for stereo orientation and stereo-digitizing of the anthropometric landmarks. For the accuracy assessment of the ‘natural point’ technique, absolute orientation was performed on the stereo-model using control-frame control and natural points respectively. The results show that the developed technique improves the accuracy of 0.6mm with one standard deviation. The optimum accuracy of the setup stereophotogrammetric cameras was 0.25mm.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Craniofacial, stereophotogrammetric, photogrammetry
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:1337
Deposited By: En. Tajul Ariffin Musa
Deposited On:02 Mar 2007 05:11
Last Modified:01 Jun 2010 02:53

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