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Proceedings Paper

Speckles and speckle techniques for biomedical applications
Author(s): Ole Johan Lokberg
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Paper Abstract

The basic properties of the laser speckle wave are briefly reviewed. Studies and measurements of test objects are possible by observing either the direct displacement of the speckles (speckle photography) or interferometric variations of brightness by adding a reference wave (speckle interferometry). Speckle interferometry becomes a particularly useful tool combined with direct video-recording and electronic processing. The resulting system--TV-holography (ESPI) is described in greater detail as it is potentially useful for many biomedical applications. It is shown how image processing can be used to increase the measuring accuracy and aid the interpretation of fringe patterns.

Paper Details

Date Published: 1 March 1992
PDF: 13 pages
Proc. SPIE 1524, Bioptics: Optics in Biomedicine and Environmental Sciences, (1 March 1992); doi: 10.1117/12.57725
Show Author Affiliations
Ole Johan Lokberg, Norwegian Institute of Technology (Norway)

Published in SPIE Proceedings Vol. 1524:
Bioptics: Optics in Biomedicine and Environmental Sciences
Anna Maria Verga Scheggi; Oliverio D.D. Soares, Editor(s)

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