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Proceedings Paper

Near-infrared active and selective polarization imaging by orthogonality-breaking: calibration of the acquisition chain
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Paper Abstract

Active polarimetric imaging by orthogonality breaking is an alternative polarimetric imaging method developed at the Institut FOTON, Rennes. By illuminating a sample with a dual-frequency dual-polarization (DFDP) beam whose polarizations are orthogonal, it is possible to characterize its diattenuation and the orientation of the anisotropy in a single acquisition. However, this technique is not sensitive to other polarimetric effects such as birefringence or pure depolarization and requires a detection/demodulation chain that introduces non-linearity effects and does not allow results to be obtained quantitatively. In this paper, after a presentation of the orthogonality-break imaging system, we will detail the calibration/correction protocol which is now implemented to take into account the effects of non-linearities. Then, we will show that it is possible, by adding a polarimetric analysis module, to make this method sensitive to the main polarimetric effects. The results obtained on a simulated operational scene will be presented.

Paper Details

Date Published: 20 April 2020
PDF: 8 pages
Proc. SPIE 11351, Unconventional Optical Imaging II, 113511E (20 April 2020); doi: 10.1117/12.2555880
Show Author Affiliations
Jonathan Staes, Univ. Rennes, Institut FOTON, CNRS (France)
François Parnet, Univ. Rennes, Institut FOTON, CNRS (France)
Julien Fade, Univ. Rennes, Institut FOTON, CNRS (France)
Noé Ortega-Quijano, Univ. Rennes, Institut FOTON, CNRS (France)
Deneb Medical S.L. (Spain)
Mehdi Alouini, Univ. Rennes, Institut FOTON, CNRS (France)

Published in SPIE Proceedings Vol. 11351:
Unconventional Optical Imaging II
Corinne Fournier; Marc P. Georges; Gabriel Popescu, Editor(s)

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