Active imaging with the aids of polarization retrieve in turbid media system

Tao, Qiangqiang; Sun, Yongxuan; Shen, Fei; Xu, Qiang; Gao, Jun; Guo, Zhongyi

doi:10.1016/j.optcom.2015.09.109

Cited by 33 publications

(13 citation statements)

References 25 publications

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“…Firstly, we constructed a simple scattering environment that is composed of a single type of scattering particle with a size of 1µm and which demonstrates a visibility value of V = 800 m. Based on the MC model [15][16][17][18][19][20], we simulated the multi-spectral forward DoP evolutions of different types of polarized incidences, including those of LPL and CPL, in the constructed foggy system, as the function of the transmission length of L. The results are shown in Figure 2. In this scattering environment, we can observe that all of the DoPs decrease gradually with increasing length (L) for all of the incident wavelengths from visible to infrared light, but the decreasing extents are different.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…In our previous study, we investigated polarization characteristics under different medium conditions and proposed a new recovery method for the transmitted polarization information [14][15][16][17][18][19][20]. Our former works were mainly focused on characteristics in the visible band.…”

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 dependence of light scattering on wavelength and the optical correlation theory, Shao et al proposed a polarization imaging method through highly turbidity water [21]. Xu et al investigated the transmission characteristics of polarization information in different disperse systems in details, such as mono-disperse and poly-disperse scattering systems [22][23][24][25]. Wang et al studied the polarization characteristics in the cloud disperse system [26,27] and Zhang et al explored the imaging quality of biological tissues [28,29].…”

Section: Introductionmentioning

confidence: 99%

“…Among them, Mueller matrix (MM) [22][23][24][25][26][27][28] has attracted more and more attentions as a characterization method since it can comprehensively reflect the polarization characteristics of media. In the past several years, MM has been preliminarily used in optical communication [22][23][24], polarization imaging [25,26], and detection of cancer tissues [28]. It has been demonstrated that MM of a medium can be further decomposed into parameters and matrices with physical significance, helping us understand the properties of the MM [30][31][32][33][34][35][36][37][38].…”

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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“…Polarization is an intrinsic feature of light that provides valuable information between objects and the scene [18]. Polarization differences of reflected light can be used to enhance the image contrast [19], [20].…”

Section: Introductionmentioning

confidence: 99%

Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse

Yang

et al. 2020

IEEE Photonics J.

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A polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can nearly preserve the incident polarization, whereas the second surface is rough and can depolarize the incident polarization. A polarization splitting prism is utilized to separate the two echo signals, which will be detected by dual Gm-APDs. It gives the ability to obtain the extremely shallow depth independent of laser pulse width and dead time of Gm-APD. The theory of laser polarization transmission of dual Gm-APD polarization lidar is analyzed. Signal restoration & center-of-mass algorithm method is used to restrain the range walk error and obtain high range precision. The depth image of shallow semitransparent media with a thickness and distance of 10 cm and 6 m, respectively, is obtained in the experiment with a range precision of 1.1 cm. An experiment of real shallow water layer with different depth features is also performed to verify the result.

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Active imaging with the aids of polarization retrieve in turbid media system

Cited by 33 publications

References 25 publications

Broad-Band Transmission Characteristics of Polarizations in Foggy Environments

Broad-Band Transmission Characteristics of Polarizations in Foggy Environments

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

Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse

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