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33 results on '"Liu, Shengying"'

4. Spectral ghost imaging camera with super-Rayleigh modulator

Author

Liu, Shengying, Liu, Zhentao, Hu, Chenyu, Li, Enrong, Shen, Xia, and Han, Shensheng

Subjects
Physics - Optics, Electrical Engineering and Systems Science - Image and Video Processing
Abstract

A spectral camera based on ghost imaging via sparsity constraints (GISC) acquires a spectral data-cube (x; y; {\lambda}) through a single exposure. The noise immunity of the system is one of the important factors affecting the quality of the reconstructed images, especially at low sampling rates. Tailoring the intensity to generate super-Rayleigh speckle patterns which have superior noise immunity may offer an effective route to promote the imaging quality of GISC spectral camera. According to the structure of GISC spectral camera, we proposed a universal method for generating super-Rayleigh speckle patterns with customized intensity statistics based on the principle of reversibility of light. Simulation and experimental results demonstrate that, within a wide imaging spectral bandwidth, GISC spectral camera with super-Rayleigh modulator not only has superior noise immunity, but also has higher imaging quality at low sampling rates. This work will promote the application of GISC spectral camera by improving the quality of imaging results, especially in weak-light illumination., Comment: 11 pages, 12 figures

Published
2019
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18. Design of a Variable Inclination Continuous Transverse Stub Array

Author

Meng Wei, Liu Shengying, Huixin Li, and Juan Liu

Subjects
Materials science, business.industry, Beam scanning, Directive antennas, 020206 networking & telecommunications, Conformal map, 02 engineering and technology, 01 natural sciences, 010305 fluids & plasmas, Stub (electronics), Transverse plane, Optics, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Pitch angle, business, Electrical impedance
Abstract

This paper presents a Variable Inclination Continuous Transvers Stub (VICTS) antenna. It is a hemispherical beam scanning antenna with a conformal mechanical profile. It only includes two main components, the radiating layer and the feeding layer. By changing the relative angle between the two layers, a continuous, wide-angle beam scanning can be achieved. This paper describes the principle of the VICTS antenna and designs a prototype. The simulation results show that the prototype can realize beam scanning from 5 degree to 65 degree in pitch angle while the gain decreases less than 5dB and the scan impedance keeps stable.

Published
2018

29. Two new Anderson-type polyoxometalate complexes: Inhibiting human endometrial carcinoma cells.

Author

He, Xianli, Lei, Kairong, and Liu, Shengying

Subjects
CANCER cell analysis, POLYOXOMETALATES, ORGANOMETALLIC compounds, HYDROTHERMAL alteration, X-ray diffraction, ANTINEOPLASTIC agents
Abstract

Two new Anderson-type polyoxometalate (POM)-based metal-organic complexes {Cu2(H2pytty)2[CrMo6(OH)5O19](H2O)8}·10H2O(1), {Cu5(pytty)2[TeMo6O24](H2O)16}·6H2O (2) (H2pytty = 3-(pyrazin-2-yl)-5-(1H-1,2,4-triazol-3-yl)-1,2,4-triazolyl) have been synthesized under hydrothermal conditions and structurally determined by single-crystal X-ray diffraction. In addition, in vitro anticancer activity of compounds 1 and 2 on three human endometrial carcinoma cells (RL-952, Ishikawa and ECC-1) was further determined via the MTT assay. [ABSTRACT FROM AUTHOR]

Published
2019
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30. Hyperspectral Camera Based on Ghost Imaging via Sparsity Constraints with Application of Flat-Field Grating

Author

刘震涛 Liu Zhentao, 韩申生 Han Shensheng, 刘盛盈 Liu Shengying, 李恩荣 Li Enrong, 吴建荣 Wu Jianrong, 沈 夏 Shen Xia, and 谭诗语 Tan Shiyu

Subjects
Optics, Field (physics), business.industry, Computer science, Hyperspectral imaging, Computer vision, Artificial intelligence, Grating, Ghost imaging, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2017

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