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Proceedings Paper

Algorithm for fringe independent quantification of noise in wrapped phase distributions obtained by digital holography and speckle interferometry
Author(s): Björn Kemper; Alexander Höink; Daniel Carl; Gert von Bally
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Paper Abstract

The noise of phase distributions is an important parameter for the optimization of holographic and speckle interferometric setups as well as to quantify the measurement accuracy for the determination of optical path length changes. An algorithm for noise quantification of wrapped phase distributions is presented that is based on an enhanced sine-cosine filter with subsequent triangle function transformation. Compared to methods that calculate the standard deviation of raw phase data modulo 2π to smoothed data obtained by spatial filtering with a sine-cosine filter, an enhanced accuracy for noise quantification is achieved that is independent of fringe number and fringe orientation.

Paper Details

Date Published: 15 September 2006
PDF: 6 pages
Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 634125 (15 September 2006); doi: 10.1117/12.695489
Show Author Affiliations
Björn Kemper, Univ. of Muenster (Germany)
Alexander Höink, Univ. of Muenster (Germany)
Daniel Carl, Univ. of Muenster (Germany)
Gert von Bally, Univ. of Muenster (Germany)

Published in SPIE Proceedings Vol. 6341:
Speckle06: Speckles, From Grains to Flowers
Pierre Slangen; Christine Cerruti, Editor(s)

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