Results 11 to 20 of about 45,890 (269)

The mr-MDA: An Invariant to Shifting, Scaling, and Rotating Variance for 3D Object Recognition Using Diffractive Deep Neural Network

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
doaj   +1 more source

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 ...
Rebecca Lange, Lange, R, Zhang, Q, Qunxi Zhang, Liang, H, Haida Liang   +5 more
core   +1 more source

Generating Convergent Laguerre-Gaussian Beams Based on an Arrayed Convex Spiral Phaser Fabricated by 3D Printing

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, Chai Hu, Dong Wei, Mingce Chen, Jiashuo Shi, Haiwei Wang, Changsheng Xie, Xinyu Zhang   +7 more
doaj   +1 more source

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, Vajzovic, T, Kafing Keita, Liang, H, Haida Liang, Tom Vajzovic   +5 more
core   +1 more source

Research on the light-field characteristics of patterned planar nanotip metasurface [PDF]

EPJ Web of Conferences
Metasurfaces 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, Shao Xuan, Ji Wuyang, You Fangchen, Zhang Xinyu   +4 more
doaj   +1 more source

Multispectral panoramic mosaicing [PDF]

Pattern Recognition Letters, 2005
Image mosaicing overcomes the limitations of a camera's limited field of view by aligning and pasting suitably transformed frames in a sequence of overlapping images. This paper deals with multispectral mosaicing for enhancement of spectral information-information from the thermal infra-red (IR, hereafter) band and visible band images is directly fused
Udhav Bhosle, Sumantra Dutta Roy, Subhasis Chaudhuri   +2 more
openaire   +2 more sources

A liquid-crystal microlens with dual-layers arrayed pattern electrode for the effective modulation of incident light beams [PDF]

EPJ Web of Conferences
In 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, Chen Han, Wang Zhe, Liu Kewei, Zhang Xinyu   +4 more
doaj   +1 more source

Electrically Controlled Liquid Crystal Microlens Array Based on Single-Crystal Graphene Coupling Alignment for Plenoptic Imaging

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, Qi Shao, Wenda He, Dong Wei, Chai Hu, Jiashuo Shi, Kewei Liu, Haiwei Wang, Changsheng Xie, Xinyu Zhang   +9 more
doaj   +1 more source

A Local Feature Descriptor Based on Oriented Structure Maps with Guided Filtering for Multispectral Remote Sensing Image Matching

Remote Sensing, 2019
Multispectral image matching plays a very important role in remote sensing image processing and can be applied for registering the complementary information captured by different sensors. Due to the nonlinear intensity difference in multispectral images,
Tao Ma, Jie Ma, Kun Yu
doaj   +1 more source

SUPER-RESOLUTION OF MULTISPECTRAL IMAGES [PDF]

Modelling and Simulation in Science, 2007
In this paper we propose and analyze a globally and locally adaptive super-resolution Bayesian methodology for pansharpening of multispectral images. The methodology incorporates prior knowledge on the expected characteristics of the multispectral images uses the sensor characteristics to model the observation process of both panchromatic and ...
Miguel Vega, Javier Mateos, Rafael Molina 0001, Aggelos K. Katsaggelos   +3 more
openaire   +1 more source