Results 21 to 30 of about 5,277,949 (378)
Statistical model for speckle pattern optimization
Optics Express, 2017 Image registration is the key technique of optical metrologies such as digital image correlation (DIC), particle image velocimetry (PIV), and speckle metrology. Its performance depends critically on the quality of image pattern, and thus pattern optimization attracts extensive attention. In this article, a statistical model is built to optimize speckle
Yong Su, Qingchuan Zhang, Zeren Gao
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Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern
Measurement Science Review, 2014 This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained
Hamarová I. +3 more
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The Methodology of Adaptive Levels of Interval for Laser Speckle Imaging. [PDF]
J ImagingA methodology is proposed for use in the laser speckle imaging field. This methodology modified the graphical and numerical speckle pattern imaging methods to improve their extraction and discrimination capabilities when processing the embedded temporal ...
Al-Temeemy AA.
europepmc +2 more sources
Sensors, 2021 The laser speckle correlation method has found widespread application for obtaining information from vibrating objects. However, the resolution and accuracy of the laser speckle correlation method as they relate to the defocusing degree have not been ...
Wenxin Hu +4 more
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Image-Enhanced Pseudo-Thermal Ghost Imaging with Hybrid Speckle Pattern
Photonics, 2023 In this study, the influence of hybrid speckle patterns on the contrast-to-noise ratio (CNR) and resolution in pseudo-thermal ghost imaging (PGI) was examined based on the object dimensions in the macroscopic and microscopic regimes.
Tong Tian +3 more
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Компьютерная оптика, 2021 A process of mode matching in a chaotic speckle pattern without a reference beam responsible for the formation of a holographic grating was studied experimentally and theoretically.
A.V. Volyar +3 more
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Superoscillation in speckle patterns [PDF]
Optics Letters, 2008 3 pages, two figures, Optics Letters ...
Dennis, M.R., Hamilton, A., Courtial, J.
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Hyperuniformity in amorphous speckle patterns [PDF]
Optics Express, 2018 Hyperuniform structures possess the ability to confine and drive light, although their fabrication is extremely challenging. Here we demonstrate that speckle patters obtained by a superposition of randomly arranged sources of Bessel beams can be used to generate hyperunifrom scalar fields.
Battista, Diego Di +4 more
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Isotropically Polarized Speckle Patterns [PDF]
Physical Review Letters, 2015 5 pages, 3 ...
Mikolaj K. Schmidt +8 more
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Applied Sciences, 2020 This paper presents a new processing method for denoising interferograms obtained by digital holographic speckle pattern interferometry (DHSPI) to serve in the structural diagnosis of artworks.
K. Yan +4 more
semanticscholar +1 more source