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General State Contrast Imaging : an optimized polarimetric imaging modality insensitive to spatial intensity fluctuations

Abstract : In active polarization imaging, one frequently needs to be insensitive to noninformative spatial intensity fluctuations. We investigate a way of solving this issue with general state contrast (GSC) imaging. It consists in acquiring two scalar polarimetric images with optimized illumination and analysis polarization states, then forming a ratio. We propose a method for maximizing the discrimination ability between a target and a background in GSC images by determining the optimal illumination and analysis states. A further advantage of this approach is to provide an objective way of quantifying the performance improvement obtained by increasing the number of degrees of freedom of a GSC imager. The efficiency of this approach is demonstrated on simulated and real-world images.
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Submitted on : Tuesday, October 30, 2012 - 4:04:52 PM
Last modification on : Wednesday, September 16, 2020 - 5:40:36 PM
Long-term archiving on: : Thursday, January 31, 2013 - 3:48:00 AM

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Guillaume Anna, François Goudail, Daniel Dolfi. General State Contrast Imaging : an optimized polarimetric imaging modality insensitive to spatial intensity fluctuations. Journal of the Optical Society of America B, Optical Society of America, 2012, 29 (6), pp.892-900. ⟨hal-00747189⟩

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