Results 11 to 20 of about 20,480 (209)

Polarimetric Imaging Through Scattering Media: A Review

open access: yesFrontiers in Physics, 2022
Imaging in scattering media has been a challenging and important subject in optical science. In scattering media, the image quality is often severely degraded by the scattering and absorption effects owing to the small particles and the resulting ...
Xiaobo Li   +7 more
doaj   +1 more source

Polarimetric Imaging in the Environment Containing Medium and Object

open access: yesFrontiers in Physics, 2022
Polarimetric imaging has been studied and applied to the problem of visibility restoration in various scenarios such as haze, mist and underwater. Although studies have shown that under certain conditions, circular polarimetric imaging has certain ...
Daqian Wang   +3 more
doaj   +1 more source

Single-pixel polarimetric imaging [PDF]

open access: yesOptics Letters, 2012
We present an optical system that performs Stokes polarimetric imaging with a single-pixel detector. This fact is possible by applying the theory of compressive sampling to the data acquired by a commercial polarimeter without spatial resolution. The measurement process is governed by a spatial light modulator, which sequentially generates a set of ...
Durán, Vicente   +4 more
openaire   +3 more sources

Advanced Processing of 3D Computational Microwave Polarimetry Using a Near-Field Frequency-Diverse Antenna

open access: yesIEEE Access, 2020
Polarimetry is typically restricted to far-field characterization of a target using beam-like waves, which results in a 2 x 2 scattering matrix representation under two orthogonal in-plane polarization bases.
Rixi Peng   +3 more
doaj   +1 more source

Improved Threat Detection in Walk-Through Security Scanning Using an Optimized Polarimetric Target Decomposition Method

open access: yesIEEE Journal of Microwaves, 2023
Reliable and convenient walk-through security scanning, which doesn't separate people or impede their movement, is an extremely challenging task. In this paper, a novel approach for a security check with an overhead observation and a polarimetric ...
Konstantin Root   +4 more
doaj   +1 more source

Computational Polarimetric Imaging Using Two-Dimensional Dynamic Metasurface Apertures

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
In this paper, we present a two-dimensional dynamic metasurface aperture to perform computational polarimetric microwave imaging for the first time. First, a novel tunable dual-polarized metamaterial radiator element integrated with two PIN diodes is ...
The Viet Hoang   +3 more
doaj   +1 more source

Inspection of plant pathologies through pseudocolored images based on polarimetric basis [PDF]

open access: yesEPJ Web of Conferences, 2023
The study of the interaction of biological tissue with polarized light leads to relevant information of physical properties (dichroism, retardance and depolarization) of samples. Polarimetric analysis of different characteristics in tissues is useful for
Canabal-Carbia Mónica   +7 more
doaj   +1 more source

Adaptive polarimetric image representation for contrast optimization of a polarized beacon through fog [PDF]

open access: yes, 2015
We present a contrast-maximizing optimal linear representation of polarimetric images obtained from a snapshot polarimetric camera for enhanced vision of a polarized light source in obscured weather conditions (fog, haze, cloud) over long distances ...
Alouini, Mehdi   +2 more
core   +3 more sources

High Resolution Linear Polarimetric Imaging for the Event Horizon Telescope [PDF]

open access: yes, 2016
Images of the linear polarization of synchrotron radiation around Active Galactic Nuclei (AGN) identify their projected magnetic field lines and provide key data for understanding the physics of accretion and outflow from supermassive black holes.
Bouman, Katherine L.   +5 more
core   +4 more sources

Range-Point Migration-Based Image Expansion Method Exploiting Fully Polarimetric Data for UWB Short-Range Radar [PDF]

open access: yes, 2018
Ultrawideband radar with high-range resolution is a promising technology for use in short-range 3-D imaging applications, in which optical cameras are not applicable. One of the most efficient 3-D imaging methods is the range-point migration (RPM) method,
Ayumi Yamaryo   +3 more
core   +2 more sources

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