Results 1 to 10 of about 61,457 (342)

Optical Multimode Fiber-Based Pipe Leakage Sensor Using Speckle Pattern Analysis [PDF]

open access: goldSensors, 2023
Water is an invaluable resource quickly becoming scarce in many parts of the world. Therefore, the importance of efficiency in water supply and distribution has greatly increased.
Jonathan Philosof   +4 more
doaj   +4 more sources

A Portable Compact System for Laser Speckle Correlation Imaging of Artworks Using Projected Speckle Pattern [PDF]

open access: yesJournal of Imaging, 2020
Artworks have a layered structure subjected to alterations caused by various factors. The monitoring of defects at sub-millimeter scale may be performed by laser interferometric techniques.
Claudia Daffara, Elisa Marini
doaj   +2 more sources

Effect of the Speckle Size on the Quality of Speckle Pattern in DSPI System [PDF]

open access: goldIEEE Access, 2019
In order to detect the deformation and strain of materials accurately, the key is to obtain the phase information caused by dynamic loading in digital speckle pattern interferometry (DSPI).
Zhisong Li   +5 more
doaj   +2 more sources

Non-invasive imaging through strongly scattering media based on speckle pattern estimation and deconvolution [PDF]

open access: yesScientific Reports, 2018
Imaging through scattering media is still a formidable challenge with widespread applications ranging from biomedical imaging to remote sensing. Recent research progresses provide several feasible solutions, which are hampered by limited complexity of ...
Zhouping Wang, Xin Jin, Qionghai Dai
doaj   +2 more sources

Assessment of the Film-Free Water Decal Method for Speckle Pattern Application in Digital Image Correlation [PDF]

open access: yesSensors
Digital Image Correlation (DIC) often encounters challenges with variability and consistency in traditional speckle pattern application techniques, such as spray-painting, affecting measurement accuracy and reliability.
Anna Camille Sanchez, Dong-Keon Kim
doaj   +2 more sources

Correlation Study of 3D Surface Roughness of Milled Surfaces with Laser Speckle Pattern [PDF]

open access: yesSensors, 2022
Current studies are focused on the correlation between characteristic features extracted from the laser speckle pattern of machined surfaces and 2D surface roughness parameters. Since milled surfaces are 3D in nature, 3D surface roughness parameters will
Suganandha Bharathi Jayabarathi   +1 more
doaj   +2 more sources

A ghost imaging framework based on laser mode speckle pattern for underwater environments [PDF]

open access: yesCommunications Engineering
Due to the complex physical processes found in underwater environments, such as absorption, scattering, and noise, it is challenging to obtain high-quality images using conventional camera-based imaging techniques.
Mo-Chou Yang   +3 more
doaj   +2 more sources

Prefabricated speckle as enhancement of digital image correlation speckle patterning efficiency for masonry testing [PDF]

open access: yesMethodsX
Digital Image Correlation (DIC) requires a high-quality speckle pattern for accurate strain and deformation measurements. Common speckle application methods require precise handling to ensure reliable measurements.
Aimi Munirah Jalilluddin   +2 more
doaj   +2 more sources

A New Pattern Quality Assessment Criterion and Defocusing Degree Determination of Laser Speckle Correlation Method

open access: yesSensors, 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
doaj   +1 more source

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