Speckles and speckle techniques for biomedical applications

Ole Johan Lokberg

doi:10.1117/12.57725

1 March 1992 Speckles and speckle techniques for biomedical applications

Ole Johan Lokberg

Proceedings Volume 1524, Bioptics: Optics in Biomedicine and Environmental Sciences; (1992) https://doi.org/10.1117/12.57725
Event: Bioptics: Optics in Biomedicine and Environmental Studies, 1991, Porto, Portugal

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.

Citation Download Citation

Ole Johan Lokberg "Speckles and speckle techniques for biomedical applications", Proc. SPIE 1524, Bioptics: Optics in Biomedicine and Environmental Sciences, (1 March 1992); https://doi.org/10.1117/12.57725

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available