Polarization-based vision sensor for automotive

Simon Thibault; Pierre Desaulniers

doi:10.1117/12.921447

10 May 2012 Polarization-based vision sensor for automotive

Simon Thibault, Pierre Desaulniers

Proceedings Volume 8368, Photonic Applications for Aerospace, Transportation, and Harsh Environment III; 83680L (2012) https://doi.org/10.1117/12.921447
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The polarization state of light provides valuable information about scenes that cannot be obtained directly from intensity or spectral images. Polarized light reflected from scenes has been found to be useful and can reveal contrasts that do not appear in classical intensity images and find many applications in remote sensing, biomedical imaging, or industrial control. Cost, size, and technological complexity of polarimetric imagers depend on the number of polarimetric parameters they measure. In this context, a key issue is to evaluate the added value of each measured polarimetric parameter in order to optimize the compromise between complexity and efficiency of these systems. In target detection applications, the relevant criterion for quantifying the performance of an imaging configuration is contrast (or discrimination ability). Analysis of the contrast and its optimization in polarimetric images have been investigated in the radar and optics communities. We investigate in the paper how the polarisation imaging can be applied in automotive vision based sensor. This study present various type of polarisation sensitive optical system. Detection of small and low-contrast objects has been found to be improved with the help of this kind of optical system.

Citation Download Citation

Simon Thibault and Pierre Desaulniers "Polarization-based vision sensor for automotive", Proc. SPIE 8368, Photonic Applications for Aerospace, Transportation, and Harsh Environment III, 83680L (10 May 2012); https://doi.org/10.1117/12.921447

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KEYWORDS

Polarization

Sensors

Polarimetry

Light scattering

Optical components

Dielectric polarization

Geometrical optics

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