Polarization calibration with large apertures in full field of view for a full Stokes imaging polarimeter based on liquid-crystal variable retarders

Zhang, Ying; Zhao, Haitao; Li, Na

doi:10.1364/ao.52.001284

Cited by 28 publications

(9 citation statements)

References 50 publications

(59 reference statements)

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“…M ins is calibrated by the method based on both a multi-band light source and a laser source for liquid crystal variable retarders in advance [ 32 ]. Meanwhile, the Stokes vector of the light reflected from the coating can be also expressed as:

where

is a 4 × 4 Mueller matrix of the coating, that is, the pBRDF matrix.…”

Section: Methodsmentioning

confidence: 99%

Spatial Scale Effect of a Typical Polarized Remote Sensor on Detecting Ground Objects

Zhang

Sun

Qiu

et al. 2021

Sensors

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For polarized remote sensors, the polarization images of ground objects acquired at different spatial scales will be different due to the spatial heterogeneity of the ground object targets and the limitation of imaging resolution. In this paper, the quantitative inversion problem of a typical polarized remote sensor at different spatial scales was studied. Firstly, the surface roughness of coatings was inversed based on the polarized bidirectional reflectance distribution function (pBRDF) model according to their polarization images at different distances. A linear-mixed pixel model was used to make a preliminary correction of the spatial scale effect. Secondly, the super-resolution image reconstruction of the polarization imager was realized based on the projection onto convex sets (POCS) method. Then, images with different resolutions at a fixed distance were obtained by utilizing this super-resolution image reconstruction method and the optimal spatial scale under the scene can be acquired by using information entropy as an evaluation indicator. Finally, the experimental results showed that the roughness inversion of coatings has the highest accuracy in the optimal spatial scale. It has been proved that our proposed method can provide a reliable way to reduce the spatial effect of the polarized remote sensor and to improve the inversion accuracy.

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where

is a 4 × 4 Mueller matrix of the coating, that is, the pBRDF matrix.…”

Section: Methodsmentioning

confidence: 99%

Spatial Scale Effect of a Typical Polarized Remote Sensor on Detecting Ground Objects

Zhang

Sun

Qiu

et al. 2021

Sensors

Self Cite

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“…In 2000, Lambrinos and colleagues (2000) applied the navigation strategy of desert ants to the autonomous navigation of mobile robots and obtained satisfactory experimental results, which verified the mechanism of biological polarization-sensitive navigation. Since then, many scholars have developed a series of polarization navigation sensors, which can be divided into two major categories: point-source polarization detectors (Chu and Zhao 2005;Cui et al 2010;Liu et al 2015; Wang et al 2015;Chu et al 2017) and imaging polarization detectors (Vedel, Breugnot and Lechocinski 2011;Chahl and Mizutani 2012;Zhang, Zhao and Li 2013;Zhang et al 2014;Lu et al 2015). Point-source detectors are smaller, lower in cost, and easier to integrate and modify, but the distinction they capture is imperfect, making them unsuitable for applications in complex scenes.…”

Section: Introductionmentioning

confidence: 99%

Error Analysis and Optimization of a Sky Full-Polarization Imaging Detection System

Chen¹,

Tang²,

Chu³

et al. 2021

photogramm eng remote sensing

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An accurate sky polarization field map is a prerequisite for polarization navigation applications. In this article, a detector for sky full-polarization imaging detection is described, the major error-influencing factors (MEIFS ) are obtained, and the error propagation is modeled and analyzed. We reveal the relationship between the error of the inversed Stokes vector and the condition number of the detector matrix, which shows that the error of the inversed Stokes vector is affected by the Stokes vector of the incident light itself and the MEIFS together, with the MEIFS playing a decisive role. With the MEIFS optimized, the impact of detector error on the inversed Stokes vector is attenuated. A control equation for system calibration is also deduced which can establish the connection between the detector matrix design and calibration process. The work in this article provides a reference for optimization and calibration of sky full-polarization imaging detectors.

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“…In general, imaging polarimeters can be categorized as division of time (DoTP), amplitude (DoAmP), aperture (DoAP), and focal-plane (DoFP) [7][8][9][10]. A wide variety of configurations exists, and all instruments require a minimum of four measurements to calculate the complete Stokes vector.…”

Section: Introductionmentioning

confidence: 99%

Full-Stokes imaging polarimeter using an array of elliptical polarizer

Hsu¹,

Myhre²,

Balakrishnan³

et al. 2014

Opt. Express

116

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In this paper, a full-Stokes imaging polarimeter operating at 580 nm using an array of elliptical polarizers is presented. The division-of-focal-plane polarimeter utilizes a set of four optimized measurements which represent a regular tetrahedron inscribed in the Poincaré sphere. Results from the device fabrication, instrument calibration and characterization are presented. The performance of the optimized full Stokes polarimeter, as defined by size of the standard deviation of the degree of circular polarization, is found to be approximately five times better than the performance of the simple full-Stokes polarimeter.

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Polarization calibration with large apertures in full field of view for a full Stokes imaging polarimeter based on liquid-crystal variable retarders

Cited by 28 publications

References 50 publications

Spatial Scale Effect of a Typical Polarized Remote Sensor on Detecting Ground Objects

Spatial Scale Effect of a Typical Polarized Remote Sensor on Detecting Ground Objects

Error Analysis and Optimization of a Sky Full-Polarization Imaging Detection System

Full-Stokes imaging polarimeter using an array of elliptical polarizer

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