Algorithm for fringe independent quantification of noise in wrapped phase distributions obtained by digital holography and speckle interferometry

Björn Kemper; Alexander Höink; Daniel Carl; Gert von Bally

doi:10.1117/12.695489

15 September 2006 Algorithm for fringe independent quantification of noise in wrapped phase distributions obtained by digital holography and speckle interferometry

Björn Kemper, Alexander Höink, Daniel Carl, Gert von Bally

Author Affiliations +

Proceedings Volume 6341, Speckle06: Speckles, From Grains to Flowers; 634125 (2006) https://doi.org/10.1117/12.695489
Event: Speckle06: Speckles, From Grains to Flowers, 2006, Nimes, France

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.

Citation Download Citation

Björn Kemper, Alexander Höink, Daniel Carl, and Gert von Bally "Algorithm for fringe independent quantification of noise in wrapped phase distributions obtained by digital holography and speckle interferometry", Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 634125 (15 September 2006); https://doi.org/10.1117/12.695489

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