Results 1 to 10 of about 126 (50)
Changing the trajectory of Airy beam sets with spatial carriers
Компьютерная оптика, 2022 In this paper, we study a change in the propagation trajectory of a set of autofocusing laser beams using a fractional Fourier transform. Clusters of displaced bounded Airy-Gaussian beams supplemented by a phase function that deflects the beam similarly ...
A.O. Frolov, А.V. Ustinov, S.N. Khonina
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Frontiers in Neuroscience, 2021 ObjectiveMagnetic resonance-guided focused ultrasound surgery (MRgFUS) lesioning is a new treatment for brain disorders. However, the skull is a major barrier of ultrasound sonication in MRgFUS because it has an irregular surface and varies its size and ...
Kyung Won Chang +6 more
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Virtual Staining of Defocused Autofluorescence Images of Unlabeled Tissue Using Deep Neural Networks
Intelligent Computing, 2022 Deep learning-based virtual staining was developed to introduce image contrast to label-free tissue sections, digitally matching the histological staining, which is time-consuming, labor-intensive, and destructive to tissue.
Yijie Zhang +7 more
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SPA-GAN: SAR Parametric Autofocusing Method with Generative Adversarial Network
Remote Sensing, 2022 Traditional synthetic aperture radar (SAR) autofocusing methods are based on the point-scattering model, which assumes the scattering phases of a target to be a constant.
Zegang Ding +6 more
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Generation of Complex Transverse Energy Flow Distributions with Autofocusing Optical Vortex Beams
Micromachines, 2021 Optical vortex (OV) beams are widely used for the generation of light fields with transverse energy flow inducing orbital motion of the nano- and microparticles in the transverse plane.
Svetlana N. Khonina +3 more
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Innovative Image Processing Method to Improve Autofocusing Accuracy
Sensors, 2022 For automated optical inspection, autofocusing microscopes play an important role in capturing clear images of the measured object. At present, the image processing part of optics-based autofocusing microscopes often has various factors, which makes it ...
Chien-Sheng Liu, Ho-Da Tu
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High-Resolution ISAR Imaging and Autofocusing via 2D-ADMM-Net
Remote Sensing, 2021 A deep-learning architecture, dubbed as the 2D-ADMM-Net (2D-ADN), is proposed in this article. It provides effective high-resolution 2D inverse synthetic aperture radar (ISAR) imaging under scenarios of low SNRs and incomplete data, by combining model ...
Xiaoyong Li, Xueru Bai, Feng Zhou
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Autofocusing and Self-Healing Optical Vortices Realized via Circular Cubic Phase Modulation
Crystals, 2022 Optical vortices have drawn extensive research interests due to their widespread applications in various fields. Therefore, it is of great significance to modulate optical vortices to endow them with more properties.
Haozhe Xiong +6 more
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Properties of off-axis caustics of autofocusing chirp beams
Компьютерная оптика, 2020 Autofocusing properties of chirp beams with an arbitrary power-law dependence on the radius are studied theoretically and numerically. Two- and three-parameter chirp beams are considered, the parameter variations of which make it possible to effectively ...
A.V. Ustinov, S.N. Khonina
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Sensors, 2022 Maneuvering target imaging based on inverse synthetic aperture radar (ISAR) imaging has recently drawn significant attention. Among the many autofocusing technologies which are crucial in ISAR imaging, minimum-entropy-based autofocusing (MEA) is highly ...
Hetong Wang +3 more
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