Title: A 3D scanning system for biomedical purposes

Authors: B.D. Bradley, A.D.C. Chan, M.J.D. Hayes

Addresses: Faculty of Engineering and Design, Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr. Ottawa, K1S 5B6 ON, Canada. ' Faculty of Engineering and Design, Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr. Ottawa, K1S 5B6 ON, Canada. ' Faculty of Engineering and Design, Department of Mechanical and Aerospace Engineering, Carleton University, 1125 Colonel By Dr. Ottawa, K1S 5B6 ON, Canada

Abstract: The use of three-dimensional (3D) scanning systems for acquiring the external shape features of biological objects has recently been gaining popularity in the biomedical field. A simple, low cost, 3D scanning system is presented, which employs the laser light-sectioning technique for data acquisition. A Direct Linear Transformation least squares algorithm is used for camera calibration and Elliptical Fourier Descriptors (EFDs) are used for data smoothing and planar section reconstruction. Results for an experiment demonstrating the validity of the EFD approach are presented. Overall, results presented for three objects scanned with the proposed system demonstrate the validity of the chosen approach. This is an expanded version of a paper presented at the 3rd IEEE International Workshop on Medical Measurements and Applications, 9–10 May 2008, Ottawa, ON, Canada.

Keywords: 3D geometric modelling; 3D scanning; laser light-sectioning; biomedical scanners; EFDs; elliptical Fourier descriptors; camera calibration; direct linear transformation; shape features; biological objects; data acquisition; medical imaging.

DOI: 10.1504/IJAMC.2009.026851

International Journal of Advanced Media and Communication, 2009 Vol.3 No.1/2, pp.35 - 54

Published online: 27 Jun 2009 *

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