Results 21 to 30 of about 7,625,131 (294)

Correlation analysis and application investigation of multi-angle simultaneous polarization measurement data and concentration of suspended particulate matter in the atmosphere

Frontiers in Environmental Science, 2022
Determining the composition, particle size distribution and concentration changes of suspended particulate matter in the atmosphere is important for evaluating the quality of air and its impact on public health.
Xuan Yuan, Jiawei Song, Jiawei Song, Nan Zeng, Jun Guo, Hui Ma, Hui Ma   +6 more
doaj   +1 more source

Unsupervised learning of pixel clustering in Mueller matrix images for mapping microstructural features in pathological tissues

Communications Engineering, 2023
In histopathology, doctors identify diseases by characterizing abnormal cells and their spatial organization within tissues. Polarization microscopy and supervised learning have been proved as an effective tool for extracting polarization parameters to ...
Jiachen Wan, Yang Dong, Yue Yao, Weijin Xiao, Ruqi Huang, Jing-Hao Xue, Ran Peng, Haojie Pei, Xuewu Tian, Ran Liao, Honghui He, Nan Zeng, Chao Li, Hui Ma   +13 more
doaj   +1 more source

Imaging with Polarized Neutrons [PDF]

Journal of Imaging, 2018
Owing to their zero charge, neutrons are able to pass through thick layers of matter (typically several centimeters) while being sensitive to magnetic fields due to their intrinsic magnetic moment. Therefore, in addition to the conventional attenuation contrast image, the magnetic field inside and around a sample can be visualized by detecting changes ...
Nikolay Kardjilov, André Hilger, Ingo Manke, Markus Strobl, John Banhart   +4 more
openaire   +4 more sources

Comparative Study of Modified Mueller Matrix Transformation and Polar Decomposition Parameters for Transmission and Backscattering Tissue Polarimetries

Applied Sciences, 2021
Mueller matrix polarimetry is widely used in biomedical studies and applications, for it can provide abundant microstructural information about tissues.
Binguo Chen, Yuxiang Lan, Haoyu Zhai, Liangyu Deng, Honghui He, Hua Mao, Hui Ma   +6 more
doaj   +1 more source

Polarization Measurements and Evaluation Based on Multidimensional Polarization Indices Applied in Analyzing Atmospheric Particulates

Applied Sciences, 2021
Online identification and characterization of suspended aerosols can provide a scientific basis for understanding aerosol transformations, quantitatively evaluating the impacts on air quality, public health, and the source apportionment of different ...
Riwei Liao, Wei Guo, Nan Zeng, Jun Guo, Yonghong He, Huige Di, Dengxin Hua, Hui Ma   +7 more
doaj   +1 more source

Multiband Polarization Imaging [PDF]

Journal of Sensors, 2016
Multiband polarization imaging is an emerging sensing method that enables simultaneous acquisition of multiband spectral and multiangle polarization information of an object of interest in the scene. Spectral signatures of the light reflected from a target reveal the characteristics of the material composing the target while polarized light provides ...
Yongqiang Zhao 0001, Qunnie Peng, Chen Yi, Seong G. Kong   +3 more
openaire   +1 more source

Mueller Matrix Imaging Optimized by Uniform Illumination

Frontiers in Physics, 2022
In this study, we present a flat-field Mueller matrix imaging system to reduce the reconstruction error caused by critical illumination. This study demonstrates that the signal-to-noise ratio (SNR) of the reconstructed images is improved by about eight ...
Wei Guo, Wei Guo, Jiawei Song, Jiawei Song, Nan Zeng, Hui Ma, Hui Ma, Hui Ma   +7 more
doaj   +1 more source

Evaluating Tissue Mechanical Properties Using Quantitative Mueller Matrix Polarimetry and Neural Network

Applied Sciences, 2022
Evaluation of the mechanical properties of biological tissues has always been an important issue in the field of biomedicine. The traditional method for mechanical properties measurement is to perform in vitro tissue deformation experiments.
Changjiang Mi, Conghui Shao, Honghui He, Chao He, Hui Ma   +4 more
doaj   +1 more source

Influence mechanism of the particle size on underwater active polarization imaging of reflective targets.

Optics Express, 2023
Underwater active polarization imaging is a promising imaging method, however, it is ineffective in some scenarios. In this work, the influence of the particle size from isotropic (Rayleigh regime) to forward-scattering on polarization imaging is ...
Haoxiang Li, Jingping Zhu, Jinxin Deng, Fengqi Guo, Jian Sun, Yunyao Zhang, X. Hou   +6 more
semanticscholar   +1 more source

Recent advances in metasurfaces for polarization imaging

Chinese Optics, 2023
: Polarization imaging, a novel photoelectric detection technology, can simultaneously acquire the contour information and polarization features of a scene. For specific application scenarios, polarization imaging has the excellent ability to distinguish
Junming Zhou, H. Jia, Xiaoya Yu, Zhou Jian, Chenjin Deng, Yi Yu   +5 more
semanticscholar   +1 more source