scholarly journals Computer Image Recognition and Recovery Method for Distorted Underwater Images by Structural Light

2021 ◽  
Vol 2083 (4) ◽  
pp. 042019
Author(s):  
Bijian Jian ◽  
Yongfa Ling ◽  
Xuebo Zhang ◽  
Jiawei Ou
Keyword(s):  
Correction Method ◽  
Image Sequences ◽  
Random Fluctuation ◽  
Test Results ◽  
Recovery Method ◽  
Distortion Compensation ◽  
Underwater Image ◽  
Active Imaging ◽  
Time Observation ◽  
Real Time Observation

Abstract When imaging through water surface, the random fluctuation of sea surface will cause the distortion of the target scene image, so the distorted image needs to be corrected and reconstructed. At present, distortion compensation mainly adopts iterative registration strategy based on image sequences which is difficult to satisfy the real-time observation. This paper presents a correction method based on active imaging of structured light for underwater image. Experimental results show that compared with the traditional iterative algorithm, the proposed algorithm cannot only improve the restoration accuracy, but also greatly shorten the processing time. Experimental test results demonstrate that the proposed algorithm has good recovery results.

Real-time observation of vortex lattices in a superconductor

1993 ◽  
Vol 51 ◽  
pp. 1050-1051
Author(s):  
K. Harada ◽  
T. Matsuda ◽  
J.E. Bonevich ◽  
M. Igarashi ◽  
S. Kondo ◽  
...  
Keyword(s):  
Real Time ◽  
Flux Line ◽  
Electron Holography ◽  
Lorentz Microscopy ◽  
Vortex Lattices ◽  
Flux Lines ◽  
Magnetic Flux Lines ◽  
Time Observation ◽  
Thin Superconductor ◽  
Real Time Observation

Previous observations of magnetic flux-lines (vortex lattices) in superconductors, such as the field distribution of a flux-line, and flux-line dynamics activated by heat and current, have employed the high spatial resolution and magnetic sensitivity of electron holography. And recently, the 2-D static distribution of vortices was also observed by this technique. However, real-time observations of the vortex lattice, in spite of scientific and technological interest, have not been possible due to experimental difficulties. Here, we report the real-time observation of vortex lattices in a thin superconductor, by means of Lorentz microscopy using a 300 kV field emission electron microscope. This technique allows us to observe the dynamic motion of individual vortices and record the events on a VTR system.The experimental arrangement is shown in Fig. 1. A Nb thin film for transmission observation was prepared by chemical etching. The grain size of the film was increased by annealing, and single crystals were observed with a thickness of 50∼90 nm.

MACHO Alert 95‐30: First Real‐Time Observation of Extended Source Effects in Gravitational Microlensing

1997 ◽  
Vol 491 (2) ◽  
pp. 436-450 ◽  
Author(s):  
C. Alcock ◽  
W. H. Allen ◽  
R. A. Allsman ◽  
D. Alves ◽  
T. S. Axelrod ◽  
...  
Keyword(s):  
Real Time ◽  
Extended Source ◽  
Source Effects ◽  
Gravitational Microlensing ◽  
Time Observation ◽  
Real Time Observation

scholarly journals Real-time observation of ultrafast molecular rotation in weakly bound dimers

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Jiaqi Zhou ◽  
Chaoxiong He ◽  
Ming-Ming Liu ◽  
Enliang Wang ◽  
Shaokui Jia ◽  
...  
Keyword(s):  
Real Time ◽  
Molecular Rotation ◽  
Weakly Bound ◽  
Time Observation ◽  
Real Time Observation

Real-time observation of dissipative solitons formation and breaking dynamics in a mode-locked fiber laser

2021 ◽  
pp. 103786
Author(s):  
Dongdong Han ◽  
Yijie Wang ◽  
Zhanqiang Hui ◽  
Zhixing Zhang ◽  
Kaili Ren ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Real Time ◽  
Dissipative Solitons ◽  
Time Observation ◽  
Real Time Observation

Real-time observation ofEscherichia colicells under irradiation with a 2-MeV H+microbeam

2012 ◽  
Vol 100 (19) ◽  
pp. 193702 ◽  
Author(s):  
Mikio Kato ◽  
Walter Meissl ◽  
Kenji Umezawa ◽  
Tokihiro Ikeda ◽  
Yasunori Yamazaki
Keyword(s):  
Real Time ◽  
Time Observation ◽  
Real Time Observation

Real-time observation of electrical vortex core switching

2013 ◽  
Vol 102 (7) ◽  
pp. 072405 ◽  
Author(s):  
Kunihiro Nakano ◽  
Kenji Tanabe ◽  
Ryo Hiramatsu ◽  
Daichi Chiba ◽  
Norikazu Ohshima ◽  
...  
Keyword(s):  
Real Time ◽  
Vortex Core ◽  
Time Observation ◽  
Real Time Observation

A constant intensity technique to improve the performances of devices based on direct absorption spectroscopy

2015 ◽  
Vol 23 (1) ◽  
Author(s):  
A. Montori ◽  
M. De Pas ◽  
M. Giuntini ◽  
M. Siciliani De Cumis ◽  
S. Viciani ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Direct Absorption ◽  
Background Signal ◽  
Constant Intensity ◽  
Gas Concentration ◽  
Direct Absorption Spectroscopy ◽  
Frequency Scan ◽  
Time Observation ◽  
Detection Processing ◽  
Real Time Observation

Abstract We describe an all−in−fibre apparatus for Constant Intensity Direct Absorption Spectroscopy (CIDAS) for gas concentration measurements which keeps the power of a diode laser constant along the frequency sweep. The reduction of the large variation of the laser power, connected to the frequency scan, enhances the ability of detecting small variations in a background signal, resulting in an increase of the sensitivity with respect to standard direct absorption techniques. Moreover, CIDAS allows for a real−time observation of the absorption signals without any kind of post−detection processing. The apparatus has been tested with carbon dioxide (CO

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