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Proceedings Paper

Automatic Measurement Of Body Surfaces Using Rasterstereography
Author(s): E. Hierholzer; W. Frobin
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Paper Abstract

The measurement of three-dimensional body shape is of considerable interest in orthopaedic applications, for example the assessment of spinal deformities from the shape of the back surface. At present these measurements are mostly carried out using optical methods such as stereophotgrammetry or moire topography. The image data acquisition is generally performed by hand. However, due to the large number of measurement points necessary for a satisfactory representation of a surface, this procedure is very tedious and time consuming. In contrast to this, rastersterography using a line raster enables considerable time savings by automatic image scanning. The method of rasterstereography is briefly explained. Due to the simple structure of line rasterstereographs an automatic image evaluation is relatively easy. The evaluation procedure consisting of image scanning (using a CCD sensor camera), line detection, line pattern analysis and three-dimensional surface reconstruction is outlined. Examples of back surface measurements in the case of spinal deformities are presented.

Paper Details

Date Published: 12 July 1983
PDF: 7 pages
Proc. SPIE 0361, Biostereometrics '82, (12 July 1983);
Show Author Affiliations
E. Hierholzer, Orthopadische Universitatsklinik Munster (West Germany)
W. Frobin, Orthopadische Universitatsklinik Munster (West Germany)

Published in SPIE Proceedings Vol. 0361:
Biostereometrics '82
Robin E. Herron, Editor(s)

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