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Proceedings Paper

A four-directional body shape measurement system and its application for pectus excavatum severity assessment
Author(s): Marcin Witkowski; Wojciech Glinkowski; Robert Sitnik; Hanna Kocoń; Paweł Bolewicki; Andrzej Górecki
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Paper Abstract

The paper presents an optical three-dimensional shape measurement system and an automatic method for assessment of pectus excavatum severity based on the measurement results. The measurement system consists of four directional modules utilizing structured light projection method (namely temporal phase shifting TPS and modified Gray code projection) to capture the shape of body surface of the patients. The measurement result is a three-dimensional point cloud representing the skin surface. The system setup is described and the typical measurement parameters are given. The automated data analysis path is explained. Its main stages are: point cloud segmentation, normalization of trunk orientation, cutting the model into slices, analysis of each slice shape, selecting the proper slice for the assessment of pectus excavatum of the patient and calculating its shape parameter. The analysis does not require any initial processing (e.g. surface fitting or mesh building) as it is conducted on raw 3-D point cloud data resulting from the measurement. A new shape parameter (I3ds) was developed that shows correlation with CT Haller Index widely used for assessment of pectus excavatum. Preliminary clinical results are presented.

Paper Details

Date Published: 4 February 2010
PDF: 8 pages
Proc. SPIE 7526, Three-Dimensional Image Processing (3DIP) and Applications, 75260P (4 February 2010); doi: 10.1117/12.838991
Show Author Affiliations
Marcin Witkowski, Warsaw Univ. of Technology (Poland)
Wojciech Glinkowski, Medical Univ. of Warsaw (Poland)
Robert Sitnik, Warsaw Univ. of Technology (Poland)
Hanna Kocoń, Medical Univ. of Warsaw (Poland)
Paweł Bolewicki, Warsaw Univ. of Technology (Poland)
Andrzej Górecki, Medical Univ. of Warsaw (Poland)

Published in SPIE Proceedings Vol. 7526:
Three-Dimensional Image Processing (3DIP) and Applications
Atilla M. Baskurt, Editor(s)

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