scholarly journals Review of spectral and polarization imaging systems

2020 ◽  
Author(s):  
Sumera Sattar ◽  
Pierre-Jean Lapray ◽  
Alban Foulonneau ◽  
Laurent Bigué
Keyword(s):  
Imaging Systems ◽  
Polarization Imaging

Modified Image Demodulation Algorithm for Spatially Modulated Full-Polarization Imaging Systems

2019 ◽  
Vol 39 (6) ◽  
pp. 0607001
Author(s):  
叶松 Song Ye ◽  
严浩方 Haofang Yan ◽  
孙晓兵 Xiaobing Sun ◽  
汪杰君 Jiejun Wang ◽  
王新强 Xinqiang Wang ◽  
...  
Keyword(s):  
Imaging Systems ◽  
Polarization Imaging

Three-channel Polarization Imaging Systems and System Error Correction Method

2014 ◽  
Vol 43 (1) ◽  
pp. 111002
Author(s):  
季尔优 JI Er-you ◽  
顾国华 GU Guo-hua ◽  
柏连发 BAI Lian-fa ◽  
钱惟贤 QIAN Wei-xian
Keyword(s):  
Error Correction ◽  
Correction Method ◽  
Imaging Systems ◽  
Polarization Imaging ◽  
System Error ◽  
Error Correction Method ◽  
Channel Polarization

Optimal Demodulation Algorithm of Spatially Modulated Full-Polarization Imaging System

2020 ◽  
Vol 86 (12) ◽  
pp. 761-766
Author(s):  
Ziyang Zhang ◽  
Song Ye ◽  
Shu Li ◽  
Yuting Zhang ◽  
Wentao Zhang ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Real Time ◽  
Stokes Parameter ◽  
Imaging System ◽  
Imaging Systems ◽  
Polarization Imaging ◽  
Filtering Method ◽  
Essential Step ◽  
Local Filtering

Spatially modulated full-polarization imaging systems can obtain full Stokes parameter information by single imaging, with strong characteristics of real-time execution and stability. Since all the polarization information is modulated into an interferogram, demodulation becomes an essential step. As the resolution of the obtained image continuously increases, the data to be calculated also increase. Therefore, a higher speed for the demodulation process is requisite. This article proposes a local filtering method and bypasses the frequency centralization method in the frequency domain to improve the speed of demodulation. The demodulation time of an interferogram of size 1024×1024 pixels was reduced from 3.027 473 s to 0.134 637 s, increasing the speed of demodulation by 97.72%. Meanwhile, the demodulation time of an interferogram of size 6144×6144 pixels was reduced from 444.329 92 s to 4.637 069 s, increasing the speed of demodulation by 98.75%.

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

Digital imaging and quantitative image analysis of polymer blends

1996 ◽  
Vol 54 ◽  
pp. 170-171
Author(s):  
Xiao Zhang
Keyword(s):  
Digital Imaging ◽  
Imaging Techniques ◽  
Imaging Systems ◽  
Polymer Science ◽  
Key Factors ◽  
Multiple Imaging ◽  
Quantitative Image ◽  
Digital Imaging Systems ◽  
Multi Phase ◽  
Network Technologies

Polymer microscopy involves multiple imaging techniques. Speed, simplicity, and productivity are key factors in running an industrial polymer microscopy lab. In polymer science, the morphology of a multi-phase blend is often the link between process and properties. The extent to which the researcher can quantify the morphology determines the strength of the link. To aid the polymer microscopist in these tasks, digital imaging systems are becoming more prevalent. Advances in computers, digital imaging hardware and software, and network technologies have made it possible to implement digital imaging systems in industrial microscopy labs.

Golay Coded Sequences in Synthetic Aperture Imaging Systems

2011 ◽  
Vol 36 (4) ◽  
Author(s):  
Ihor Trots ◽  
Yuriy Tasinkevych ◽  
Andrzej Nowicki ◽  
Marcin Lewandowski
Keyword(s):  
Imaging Systems ◽  
Synthetic Aperture ◽  
Synthetic Aperture Imaging
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