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30 March 2020 Accounting for the nonstationary correlated noise in digital holography (Conference Presentation)
Olivier Flasseur, Loïc Denis, Éric Thiébaut, Thomas Olivier, Corinne Fournier
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Proceedings Volume 11351, Unconventional Optical Imaging II; 1135113 (2020) https://doi.org/10.1117/12.2559941
Event: SPIE Photonics Europe, 2020, Online Only
Abstract
In in-line digital holography, the background of the recorded images is sometimes much higher than the signal of interest. It can originates, for example, from the diffraction of dusts or fringes coming from multiple reflexions in the optical components. It is often correlated, nonstationary and not constant over time. Detecting a weak signal superimposed over such a background is challenging. Detection of the pattern then requires a statistical modeling of the background. In this work, spatial correlations are locally estimated based on several background images. A fast algorithm that computes detection maps is derived. The proposed approach is evaluated on images obtained from experimental data recorded with a holographic microscope.
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Olivier Flasseur, Loïc Denis, Éric Thiébaut, Thomas Olivier, and Corinne Fournier "Accounting for the nonstationary correlated noise in digital holography (Conference Presentation)", Proc. SPIE 11351, Unconventional Optical Imaging II, 1135113 (30 March 2020); https://doi.org/10.1117/12.2559941
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KEYWORDS
Digital holography
Signal detection
Algorithm development
Detection and tracking algorithms
Diffraction
Holography
Microscopes
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