Abstract

We designed and built an active polarimetric imager with laser illumination at 1.5 μm wavelength for adaptive polarimetric contrast optimization. It can generate and analyze any polarization state on the Poincaré sphere in order to best adapt to the polarimetric properties of the scene. Polarimetric contrast optimization is performed by analyzing the scene with an ultrafast active-contour-based segmentation algorithm. This device is, to the best of our knowledge, the first fully adaptive imager controlled by image processing algorithms for polarimetric contrast enhancement. Its capabilities are illustrated in some examples of real-world decamouflage applications.

© 2015 Optical Society of America

Comparison of different active polarimetric imaging modes for target detection in outdoor environment

Nicolas Vannier, François Goudail, Corentin Plassart, Matthieu Boffety, Patrick Feneyrou, Luc Leviandier, Frédéric Galland, and Nicolas Bertaux
Appl. Opt. 55(11) 2881-2891 (2016)

Fully tunable active polarization imager for contrast enhancement and partial polarimetry

Guillaume Anna, Hervé Sauer, François Goudail, and Daniel Dolfi
Appl. Opt. 51(21) 5302-5309 (2012)

Effect of imaging geometry and noise model on polarimetric contrast optimization

Jun Dai, Matthieu Boffety, and François Goudail
Appl. Opt. 58(8) 2100-2111 (2019)

Improving target discrimination ability of active polarization imagers by spectral broadening

Lijo Thomas, Matthieu Boffety, and François Goudail
Opt. Express 23(26) 33514-33528 (2015)

General state contrast imaging: an optimized polarimetric imaging modality insensitive to spatial intensity fluctuations

Guillaume Anna, Françcois Goudail, and Daniel Dolfi
J. Opt. Soc. Am. A 29(6) 892-900 (2012)