Results 11 to 20 of about 135,791 (297)
Sensors, 2022 The diffractive deep neural network (D2NN) can efficiently accomplish 2D object recognition based on rapid optical manipulation. Moreover, the multiple-view D2NN array (MDA) possesses the obvious advantage of being able to effectively achieve 3D object ...
Liang Zhou, Jiashuo Shi, Xinyu Zhang
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Micromachines, 2020 A convex spiral phaser array (CSPA) is designed and fabricated to generate typical convergent Laguerre-Gaussian (LG) beams. A type of 3D printing technology based on the two-photon absorption effect is used to make the CSPAs with different featured sizes,
Chang Liu +7 more
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PRISMS: a portable multispectral imaging system for remote in situ examination of wall paintings [PDF]
, 2007 We present a proto-type portable remote multispectral imaging system, PRISMS (Portable Remote Imaging System for Multispectral Scanning), that is light-weight, flexible and without any cumbersome mechanical structure for in situ high resolution colour ...
Keita, K, Liang, H, Vajzovic, T
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Remote multispectral imaging with PRISMS and XRF analysis of Tang Tomb paintings [PDF]
, 2011 PRISMS (Portable Remote Imaging System for Multispectral Scanning) is a multispectral/hyperspectral imaging system designed for flexible in situ imaging of wall paintings at high resolution (tens of microns) over a large range of distances (less than a ...
Lange, R, Liang, H, Zhang, Q
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Research on the light-field characteristics of patterned planar nanotip metasurface [PDF]
EPJ Web of ConferencesMetasurfaces in namo-meter are widely applied to improve the lightwave controllability. The reflection of the proposed planar nanotip metasurface in infrared regime was demonstrated to be effectively modulated, and the minimum value is ~41.0% under an ...
Liu Taige +4 more
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Multispectral High Temperature Thermography [PDF]
Sensors, 2022 The paper considers the issues of creating high-temperature digital thermographs based on RGB photodetector arrays. It has been shown that increasing the reliability of temperature measurement of bodies with unknown spectral coefficient of thermal radiation can be ensured by optimal selection of the used spectral range and registration of the observed ...
Waldemar Wójcik +4 more
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Pansharpening techniques to detect mass monument damaging in Iraq [PDF]
, 2017 The recent mass destructions of monuments in Iraq cannot be monitored with the terrestrial survey methodologies, for obvious reasons of safety. For the same reasons, it’s not advisable the use of classical aerial photogrammetry, so it was obvious to ...
Baiocchi, Valerio +3 more
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Optics Express, 2015 Current multispectral imaging systems use narrowband filters to capture the spectral content of a scene, which necessitates different filters to be designed for each application. In this paper, we demonstrate the concept of Fourier multispectral imaging which uses filters with sinusoidally varying transmittance.
Jie, Jia +3 more
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A liquid-crystal microlens with dual-layers arrayed pattern electrode for the effective modulation of incident light beams [PDF]
EPJ Web of ConferencesIn this paper, an electrically controlled liquid crystal (LC) microlens array based on dual-layer arrayed planar pattern electrode is reported for effective light wave modulation.
Ye Mao +4 more
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Micromachines, 2020 As a unique electric-optics material, liquid crystals (LCs) have been used in various light-control applications. In LC-based light-control devices, the structural alignment of LC molecules is of great significance. Generally, additional alignment layers
Mingce Chen +9 more
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