A Simplified Rasterstereography Measuring Technique With Application To Biomedical Engineering

D. Elad; R. Zeltser; M. Sahar; J. M. Avidor; S. Einav; N. Rosenberg

doi:10.1117/12.950456

14 April 1989 A Simplified Rasterstereography Measuring Technique With Application To Biomedical Engineering

D. Elad, R. Zeltser, M. Sahar, J. M. Avidor, S. Einav, N. Rosenberg

Proceedings Volume 1030, Biostereometrics '88; (1989) https://doi.org/10.1117/12.950456
Event: Biostereometrics '88: Spatial and Spatiotemporal Analysis of Biological Form and Function, 1988, Basel, Switzerland

Abstract

Noncontact measurements of the topography of irregular biological surfaces are important needs for biological investigators. Direct measurements with a mechanical probe are not recommended or are not feasible, especially when the biological surface interacts with another physical medium. Existing stereophotogrammetric techniques are usually designed for static measurements and are based on complex optical systems, or require lengthy computations to produce accuracies which are beyond the practical biomedical needs. This work presents a novel noncontact technique for dynamic visualization and measurement of three-dimensional surfaces of moving boundaries for applications to biomedical studies. The system is similar to rasterstereography, but involves advanced methods of image processing and linearizations that simplify the geometry reconstruction procedure. The accuracy of the measured three-dimensional geometry is better than most practical applications in biomedical engineering. Measurements of the geometry of a collapsible tube under static and dynamic conditions are presented.

Citation Download Citation

D. Elad, R. Zeltser, M. Sahar, J. M. Avidor, S. Einav, and N. Rosenberg "A Simplified Rasterstereography Measuring Technique With Application To Biomedical Engineering", Proc. SPIE 1030, Biostereometrics '88, (14 April 1989); https://doi.org/10.1117/12.950456

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KEYWORDS

Cameras

Image processing

Raster graphics

Biostereometrics

Latex

3D image processing

Biomedical engineering

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