A Polarization Parametric Method of Sensing the Scattering Signals From a Submicrometer Particle

Ullah, Kaleem; Liu, Xuefeng; Xiong, Jichuan; Hao, Jingjing; Xu, Bin; Zhao, Jianhua; Liu, Weiping

doi:10.1109/lpt.2016.2624499

Cited by 19 publications

(18 citation statements)

References 25 publications

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“…When calculating the airlight I A ∞ (x, y), we choose the intensities of areas without any objects in the best state and worst state images and mark them byÎ B (x, y, 0 • ) andÎ W (x, y, 90 • ), respectively. Equation (5) gives the DoCP of the airlight, according to the definition of polarization degree.…”

Section: Water Spray Removalmentioning

confidence: 99%

“…The major difficulty encountered in these techniques is the loss of directionality of the incident light caused by multiple scattering among particles (water spray, dust, etc. ), which leads to degradation of the image quality [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“… , respectively. Equation(5) gives the DoCP of the airlight, according to the definition of polarization degree.…”

mentioning

confidence: 99%

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Advanced Visualization Polarimetric Imaging: Removal of Water Spray Effect Utilizing Circular Polarization

Liu

Han

et al. 2021

Applied Sciences

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Circular polarization (CP) memory is a well-known phenomenon whereby natural light becomes partially circularly polarized after scattering by water spray several times, and the circularly polarized state can be well preserved within a certain propagation distance. In this study, a CP imaging method combined with the multi-scale analysis in the frequency domain is proposed to enhance the vision in rainy conditions. The images were first decomposed into multi-scales. CP characteristics of light were employed in the low-frequency parts to improve the quality of images in rainy conditions, and the high-frequency parts compensated specific structure information. Experimental results demonstrate that the proposed method can remove the water spray effect thereby improving the vision of degraded rainy-day images.

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Section: Water Spray Removalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced Visualization Polarimetric Imaging: Removal of Water Spray Effect Utilizing Circular Polarization

Liu

Han

et al. 2021

Applied Sciences

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“…Recently, we have demonstrated the use of PIMI system for the light scattering measurement of Cu 2 O particle [13]. Yet another work proved the use of it for sensing the scattering signals from a sub micrometer particle [14]. Further, some of the 46 researchers have reported the fabrication of GaN-based device structure on a nanoscale patterned 47 silicon substrate [15].…”

Section: Introductionsmentioning

confidence: 99%

Super-Resolution Optical Microscopy for Investigations of Defects in Semiconductor Device

Yadav

Yao

2021

Preprint

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Ripples scattering of sidewall in pattern devices is efficient and necessary for monitoring the semiconductor fabrication process. As a step towards improving the imaging quality in terms of scattering, an attempt has been made to use our recently reported method called Parametric Indirect Microscopic Imaging (PIMI) for the thin layer of pattern devices. The present study demonstrates that the resolving power of PIMI imaging for the sidewall of the pattern devices is better than that of the conventional microscopy techniques. The better resolving power of the present PIMI technique for imaging the sidewalls paves the (new) way for its industrial application for the inspection of the integrated semiconductor circuits. For the demonstration, PIMI images have been compared with AFM, which are very close agreement.

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“…For example, X-rays systems, which are increasingly used in the food production industry and medical industry for quality control inspection, provide high resolution images but have difficulties in detecting low density objects such as plastic, glass, wood or insects. On the other hand, infrared (IR) and optical technologies [10][11][12] have the advantage of being fast and safe but they are limited by wavelength range and a poor penetration capability and strong absorption in water [13][14][15][16][17]. Instead, fluorescence imaging is effective only when objects with fluorescent compounds are investigated.…”

Section: Introductionmentioning

confidence: 99%

THz Super-Resolution Imaging in Transmission Technology by Using Butterfly and Pattern Device Samples

Yadav

Wang

2021

Preprint

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Recently there has been an increasing demand for terahertz technology especially in imaging. In the past few decades, the applications of terahertz (THz) imaging technology have seen significant developments in the fields of biology, medical diagnosis, food safety, and nondestructive testing. The medical and semiconductor industry has always attracted significant attention worldwide. In particular, the importance of real and perfect inspection technologies has been growing due to an increasing demand for improving the quality of life and developing industries. This paper presents the research of THz technology with super-resolution THz imaging in transmission mode on four types of different samples. We have reported transmission measurement at different THz frequency of each sample. The butterfly sample used super-resolution THz imaging. The THz super-resolution is obtained excellent at 1.8 THz, it is near about 1 micrometer. A good resolution images have been obtained. This new THz super-resolution techniques can apply in medical and security purposes. Further applications will be reported in coming papers.

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A Polarization Parametric Method of Sensing the Scattering Signals From a Submicrometer Particle

Cited by 19 publications

References 25 publications

Advanced Visualization Polarimetric Imaging: Removal of Water Spray Effect Utilizing Circular Polarization

Advanced Visualization Polarimetric Imaging: Removal of Water Spray Effect Utilizing Circular Polarization

Super-Resolution Optical Microscopy for Investigations of Defects in Semiconductor Device

THz Super-Resolution Imaging in Transmission Technology by Using Butterfly and Pattern Device Samples

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