title: Long-range polarimetric imaging through fog.
abstract: We report an experimental implementation of long-range polarimetric imaging through fog over kilometric distance in real field atmospheric conditions. An incoherent polarized light source settled on a telecommunication tower is imaged at a distance of 1.3 km with a snapshot polarimetric camera including a birefringent Wollaston prism, allowing simultaneous acquisition of two images along orthogonal polarization directions. From a large number of acquisitions datasets and under various environmental conditions (clear sky/fog/haze, day/night), we compare the efficiency of using polarized light for source contrast increase with different signal representations (intensity, polarimetric difference, polarimetric contrast, etc.). With the limited-dynamics detector used, a maximum fourfold increase in contrast was demonstrated under bright background illumination using polarimetric difference image.
authors: Julien
authors: J
authors: Fade
authors: Swapnesh
authors: S
authors: Panigrahi
authors: Anthony
authors: A
authors: Carré
authors: Ludovic
authors: L
authors: Frein
authors: Cyril
authors: C
authors: Hamel
authors: Fabien
authors: F
authors: Bretenaker
authors: Hema
authors: H
authors: Ramachandran
authors: Mehdi
authors: M
authors: Alouini
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D008027:Light; D008029:Lighting / Q000295:instrumentation*; D009391:Nephelometry and Turbidimetry / Q000295:instrumentation*; D010781:Photography / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D058998:Remote Sensing Technology / Q000295:instrumentation*; D012542:Scattering, Radiation; D014887:Weather