Results 1 to 10 of about 133,909 (293)
Semiclassical theory of speckle correlations [PDF]
, 2013 Coherent wave propagation in random media results in a characteristic speckle pattern, with spatial intensity correlations with short-range and long-range behavior. Here, we show how the speckle correlation function can be obtained from a ray picture for
Breitkreiz, Maxim, Brouwer, Piet W.
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Speckle Noise Reduction in Digital Holography Using a DMD and Multi-Hologram Resampling
Applied Sciences, 2020 Speckle noise is a well-documented problem on coherent imaging techniques like Digital Holography. A method to reduce the speckle noise level is presented, based on introducing a Digital Micromirror Device to phase modulate the illumination over the ...
John Restrepo +2 more
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Speckle reduction in double-pass retinal images using variable-focus lenses [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 Speckle arises in double-pass images when coherent light is scattered by the retina. Since this noise degrades the images that are used to characterize the eye, there is special attention in reducing speckle when working with instruments based on retina ...
García-Guerra C. E. +3 more
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Hyperuniformity in amorphous speckle patterns [PDF]
, 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 ...
Ancora, Daniele +4 more
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Influence of Optical Fiber Parameters on the Speckle Pattern and Spectral Observation in Astronomy
PhotonicsOptical fibers serve as a bridge to transmit starlight into the spectrograph in fiber spectral surveys. Due to the interference between multiple modes supported within the fiber, a granular speckle pattern appears on the end of the fiber and leads to an ...
Anzhi Wang +10 more
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Remote Sensing, 2016 Ghost imaging via sparsity constraint (GISC)—which is developing into a new staring imaging lidar—can obtain both the range information and spatial distribution of a remote target with the use of the measurements below the Nyquist limit.
Wenlin Gong +5 more
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Remote Sensing, 2021 The detection and removal of erroneous pixels is a critical pre-processing step in producing chlorophyll-a (chl-a) concentration values to adequately understand the bio-physical oceanic process using optical satellite data.
Ji-Eun Park, Kyung-Ae Park
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Bose-Einstein Condensate in Weak 3d Isotropic Speckle Disorder [PDF]
, 2012 The effect of a weak three-dimensional (3d) isotropic laser speckle disorder on various thermodynamic properties of a dilute Bose gas is considered at zero temperature.
A. Pelster +33 more
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A New Insight into Biospeckle Activity in Apple Tissues
Sensors, 2019 The monitoring and characterization of agricultural products before harvest or during ripening, storage, and shelf life has recently been increasingly explored in the literature.
Christelle Abou Nader +3 more
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Multi-Spectral Optimization for Tissue Probing Using Machine Learning
IEEE Photonics Journal, 2021 An optical approach for pigmented lesions detection in human skin is presented. As differences between normal skin tissue and pigmentation tissue (and even a change in pigmentation development) can be detected by their optical properties, this paper ...
Yarden Tzabari Kelman +4 more
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