Polarimetric image recovery in turbid media employing circularly polarized light

Hu, Haofeng; Zhao, Lin; Li, Xiaobo; Wang, Hui; Yang, Jingyu; Li, Kun; Liu, Tiegen

doi:10.1364/oe.26.025047

Cited by 66 publications

(40 citation statements)

References 28 publications

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“…Observing elliptically and circularly polarized light has applications in surveillance 33 and metrology. It has been shown that circularly polarized light retains its polarization state as it travels through turbid media better than linear polarization states [34][35][36][37][38] . For remote imaging over long distances through smoke and haze, polarization imaging, without active illumination such as LIDAR 39 , may provide better signal-to-noise in comparison with conventional color or monochrome measurements.…”

Section: Discussionmentioning

confidence: 99%

Observation of elliptically polarized light from total internal reflection in bubbles

Miller

Ding

Jiang

et al. 2020

Sci Rep

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Bubbles are ubiquitous in the natural environment, where different substances and phases of the same substance forms globules due to differences in pressure and surface tension. Total internal reflection occurs at the interface of a bubble, where light travels from the higher refractive index material outside a bubble to the lower index material inside a bubble at appropriate angles of incidence, which can lead to a phase shift in the reflected light. Linearly polarized skylight can be converted to elliptically polarized light with efficiency up to 53% by single scattering from the water-air interface. Total internal reflection from air bubble in water is one of the few sources of elliptical polarization in the natural world. Stationary and dynamic scenes of air bubbles in water in both indoor and outdoor settings are studied using an imaging polarimeter. Our results are important for studies in fluid dynamics, remote sensing, and polarimetry.

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Section: Discussionmentioning

confidence: 99%

Observation of elliptically polarized light from total internal reflection in bubbles

Miller

Ding

Jiang

et al. 2020

Sci Rep

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“…Schechner et al proposed a physical model and algorithm using polarized light defogging, which achieved good results and has been successfully applied to underwater polarization restoration [12][13][14][15][16]. Later, this method has been modified and improved by some other researchers in different scenarios [17][18][19][20][21]. Hu et al improved this model and polarization information processing algorithm to effectively solve the following problems: (1) The restoration of objects with high degree of polarization (DoP) (low depolarization) in the scene cannot be realized [17,19]; (2) Restoration fails in high-concentration scattering environment [18]; (3) The restoration effect is poor in a non-uniform light field environment [20].…”

Section: Introductionmentioning

confidence: 99%

“…Later, this method has been modified and improved by some other researchers in different scenarios [17][18][19][20][21]. Hu et al improved this model and polarization information processing algorithm to effectively solve the following problems: (1) The restoration of objects with high degree of polarization (DoP) (low depolarization) in the scene cannot be realized [17,19]; (2) Restoration fails in high-concentration scattering environment [18]; (3) The restoration effect is poor in a non-uniform light field environment [20]. Based on the dependence of light scattering on wavelength and the optical correlation theory, Shao et al proposed a polarization imaging method through highly turbidity water [21].…”

Section: Introductionmentioning

confidence: 99%

Analyzing Polarization Transmission Characteristics in Foggy Environments Based on the Indices of Polarimetric Purity

Wang

et al. 2020

IEEE Access

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“…Van der Laan J. D. et al simulated the transmission characteristics of CPL in a foggy environment for improving the detection range [8][9][10]. Hu H. et al used the memory effect of CPL to improve the quality of recovered polarized images [11]. Li X. et al proposed a pseudo-polarimetric dehazing method, which only required a single image captured by the detector [12].…”

Section: Introductionmentioning

confidence: 99%

Broad-Band Transmission Characteristics of Polarizations in Foggy Environments

Shen

Wang

et al. 2019

Atmosphere

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Based on the Monte Carlo (MC) algorithm, we simulate the evolutions of different types of the polarized lights in the broad-band range from visible to infrared in foggy environments. Here, we have constructed two scattering systems to simulate the transmission characteristics of the polarized lights: (1) A monodisperse system based on five types of particles with the sizes of 0.5, 1.0, 2.5, 4, and 5 µm, respectively; (2) a polydisperse system based on scattering particles with a mean value (size) of 2.0 μm. Our simulation results show that linearly polarized light (LPL) and circularly polarized light (CPL) exhibit different advantages in different wavelengths and different scattering systems. The polarization maintenances (PM) of the degree of circular polarizations (DoCPs) are better than those of the degree of linear polarizations (DoLPs) for most incident wavelengths. CPL is not superior to LPL in the strong-absorption wavelengths of 3.0µm, 6.0µm, and long infrared. Here, when the wavelength is closer to the particle sizes in a system, the influence on propagating polarizations will be more obvious. However, the difference in the degree of polarization (DoP) between the resulting CPL and LPL is positive at these points, which means the penetrating ability of CPL is superior to that of LPL in these scattering systems. We have also simulated the extinction efficiency Qext and the scattering index ratio Qratio as functions of both wavelength and particle size for analyzing polarization’s transmission characteristics. Our work paves the way of selecting the optimal incident wavelengths and polarizations for concrete scattering systems.

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Polarimetric image recovery in turbid media employing circularly polarized light

Cited by 66 publications

References 28 publications

Observation of elliptically polarized light from total internal reflection in bubbles

Observation of elliptically polarized light from total internal reflection in bubbles

Analyzing Polarization Transmission Characteristics in Foggy Environments Based on the Indices of Polarimetric Purity

Broad-Band Transmission Characteristics of Polarizations in Foggy Environments

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