Results 21 to 30 of about 11,974 (122)
Effect of the Speckle Size on the Quality of Speckle Pattern in DSPI System
IEEE 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
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Towards Reduced CNNs for De-Noising Phase Images Corrupted with Speckle Noise
Photonics, 2021 Digital holography is a very efficient technique for 3D imaging and the characterization of changes at the surfaces of objects. However, during the process of holographic interferometry, the reconstructed phase images suffer from speckle noise.
Marie Tahon +2 more
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Single-Mode versus multimode interferometry: a performance study [PDF]
Astron.Astrophys. 418 (2004) 1179-1186, 2004 We compare performances of ground-based single-mode and multimode (speckle) interferometers in the presence of partial Adaptive Optics correction of atmospheric turbulence. It is first shown that for compact sources (i.e. sources smaller than the Airy disk of a single telescope) not entirely resolved by the interferometer, the remarkable property of ...
arxiv +1 more source
Nonlinear propagation of an optical speckle field [PDF]
Phys. Rev. A 85, 053816 (2012), 2012 We provide a theoretical explanation of the results on the intensity distributions and correlation functions obtained from a random beam speckle field in nonlinear bulk waveguides reported in the recent publication Y. Bromberg et.al., Nat. Photonics \textbf{4}, 721 (2010).
arxiv +1 more source
Phase extraction in dynamic speckle interferometry: proposal of a road map
EPJ Web of Conferences, 2010 Of all the two-beam interference patterns, the ones obtained in speckle interferometry (SI) are the most difficult to be phase-demodulated. Many solutions exist in classical smooth-wave interferometry and alike techniques, both in static and dynamic ...
Jacquot P., Equisa S.
doaj +1 more source
Fiber-Optic Point-Based Sensor Using Specklegram Measurement
Sensors, 2017 Here, we report a fiber-optic point-based sensor to measure temperature and weight based on correlated specklegrams induced by spatial multimode interference.
Jiao-Jiao Wang +4 more
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Adaptive Speckle Imaging Interferometry: a new technique for the analysis of microstructure dynamics, drying processes and coating formation [PDF]
Optics express 15, 23 (2007) 15250-15259, 2007 We describe an extension of multi-speckle diffusing wave spectroscopy adapted to follow the non-stationary microscopic dynamics in drying films and coatings in a very reactive way and with a high dynamic range. We call this technique "Adaptive Speckle Imaging Interferometry".
arxiv +1 more source
Metals, 2021 SLM additive manufacturing has demonstrated great potential for aerospace applications when structural elements of individual design and/or complex shape need to be promptly supplied.
Eugene S. Statnik +11 more
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Multi-Modal X-ray Imaging and Analysis for Characterization of Urinary Stones
Applied Sciences, 2022 Backgound: The composition of stones formed in the urinary tract plays an important role in their management over time. The most common imaging method for the non-invasive evaluation of urinary stones is radiography and computed tomography (CT). However,
Somayeh Saghamanesh +3 more
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High-resolution Solar Image Reconstruction Based on Non-rigid Alignment [PDF]
, 2022 Suppressing the interference of atmospheric turbulence and obtaining observation data with a high spatial resolution is an issue to be solved urgently for ground observations. One way to solve this problem is to perform a statistical reconstruction of short-exposure speckle images. Combining the rapidity of Shift-Add and the accuracy of speckle masking,
arxiv +1 more source