Automatic Measurement Of Body Surfaces Using Rasterstereography

E. Hierholzer; W. Frobin

doi:10.1117/12.966011

12 July 1983 Automatic Measurement Of Body Surfaces Using Rasterstereography

E. Hierholzer, W. Frobin

Proceedings Volume 0361, Biostereometrics '82; (1983) https://doi.org/10.1117/12.966011
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

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.

Citation Download Citation

E. Hierholzer and W. Frobin "Automatic Measurement Of Body Surfaces Using Rasterstereography", Proc. SPIE 0361, Biostereometrics '82, (12 July 1983); https://doi.org/10.1117/12.966011

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