Results 51 to 60 of about 586,449 (202)
, 2011 We demonstrate that sub-wavelength optical images borne on partially-spatially-incoherent light can be recovered, from their far-field or from the blurred image, given the prior knowledge that the image is sparse, and only that. The reconstruction method
Alexander Szameit +18 more
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Real-time edge-enhanced optical correlator [PDF]
, 1992 Edge enhancement of an input image by four-wave mixing a first write beam with a second write beam in a photorefractive crystal, GaAs, was achieved for VanderLugt optical correlation with an edge enhanced reference image by optimizing the power ratio of ...
Cheng, Li-Jen, Liu, Tsuen-Hsi
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Learning SAR-to-Optical Image Translation via Diffusion Models With Color Memory
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSynthetic aperture radar (SAR) and optical sensing are two important means of Earth observation. SAR-to-optical image translation (S2OIT) can integrate the advantages of both and assist SAR image interpretation under all-day and all-weather conditions ...
Zhe Guo +4 more
doaj +1 more source
A Novel Optical/digital Processing System for Pattern Recognition [PDF]
, 1993 This paper describes two processing algorithms that can be implemented optically: the Radon transform and angular correlation. These two algorithms can be combined in one optical processor to extract all the basic geometric and amplitude features from ...
Boone, Bradley G., Shukla, Oodaye B.
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Experimental study of z resolution in acousto-optical coherence tomography using random phase jumps on ultrasound and light [PDF]
, 2013 Acousto-Optical Coherence Tomography (AOCT) is a variant of Acousto Optic Imaging (also called Ultrasound modulated Optical Tomography) that makes possible to get resolution along the ultrasound propagation axis $z$. We present here new AOCT experimental
Farahi, Salma +3 more
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The Use of Optical Methods in the Analysis of the Areas with Stress Concentration
Journal of Mechanical Engineering, 2018 Anchoring parts of technical systems are often damaged due to the heavy forces acting on these systems during their operation. For that reason, various modifications are suggested and created on the anchoring screws, which should help to reduce the ...
Pástor Miroslav +3 more
doaj +1 more source
Flow measurements in a blood-perfused collagen vessel using x-ray micro-particle image velocimetry. [PDF]
PLoS ONE, 2013 Blood-perfused tissue models are joining the emerging field of tumor engineering because they provide new avenues for modulation of the tumor microenvironment and preclinical evaluation of the therapeutic potential of new treatments. The characterization
Elizabeth Antoine +5 more
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Chemical Engineering Transactions, 2019 Among the main optical methods digital image correlation (DIC) can be highlighted. Although DIC development is relatively recent, the advantages offered by this method make it equally competitive with other classical optical techniques that suffer from ...
Ayrton Alef Castanheira Pereira +1 more
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Multibeam single frequency synthetic aperture radar processor for imaging separate range swaths [PDF]
, 1982 A single-frequency multibeam synthetic aperture radar for large swath imaging is disclosed. Each beam illuminates a separate ""footprint'' (i.e., range and azimuth interval).
Jain, A.
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Cancellation of atmospheric turbulence effects in entangled two-photon beams
, 2013 Turbulent airflow in the atmosphere and the resulting random fluctuations in its refractive index have long been known as a major cause of image deterioration in astronomical imaging and figures among the obstacles for reliable optical communication when
C. H. Monken +5 more
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