Results 41 to 50 of about 4,294 (185)
Sparse Regularization with a Non-Convex Penalty for SAR Imaging and Autofocusing
Remote Sensing, 2022 In this paper, SAR image reconstruction with joint phase error estimation (autofocusing) is formulated as an inverse problem. An optimization model utilising a sparsity-enforcing Cauchy regularizer is proposed, and an alternating minimization framework ...
Zi-Yao Zhang +3 more
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Journal of Information and Intelligence, 2023 This paper proposes a new method to generate a two-dimensional (2D) Airy beam and Airy autofocusing beam by using the scalar holographic metasurface with amplitude-phase modulation in the microwave band.
Song Zhang +6 more
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Autofocus for digital Fresnel holograms by use of a Fresnelet-sparsity criterion [PDF]
, 2004 We propose a robust autofocus method for reconstructing digital Fresnel holograms. The numerical reconstruction involves simulating the propagation of a complex wave front to the appropriate distance.
Liebling, Michael, Unser, Michael
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Autofocusing in microscopy based on the OTF and sampling [PDF]
Bioimaging, 1994 Frank R. Boddeke, Lucas J. van Vliet, Hans Netten and Ian T. YoungPattern Recognition Group of the Faculty of Applied PhysicsDelft University of TechnologyLorentzweg 1, 2628 CJ Delft, The NetherlandsAbstractIn the literature many autofocus algorithms have been proposed and compared (Groen et al. 1985;Firestone at al. 1991; Yeo et al.
Boddeke, F.R. (author) +3 more
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A Workstation for microassembly [PDF]
, 2007 In this paper, an open-architecture, reconfigurable microassembly workstation for efficient and reliable assembly of micromachined parts is presented.
Kunt, Emrah Deniz +2 more
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Autofocused 3D Classification of Cryoelectron Subtomograms [PDF]
Structure, 2014 Classification of subtomograms obtained by cryoelectron tomography (cryo-ET) is a powerful approach to study the conformational landscapes of macromolecular complexes in situ. Major challenges in subtomogram classification are the low signal-to-noise ratio (SNR) of cryo-tomograms, their incomplete angular sampling, the unknown number of classes and the
José-Jesús Fernández +4 more
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Compressed Sensing Linear Array SAR Autofocusing Imaging via Semi-definite Programming
Leida xuebao, 2018 Linear Array Synthetic Aperture Radar (LASAR) is a novel and promising radar imaging technique. In recent years, Compressed Sensing (CS) sparse recovery has been a research focus for high-resolution three-Dimensional (3-D) LASAR imaging.
Wei Shunjun +3 more
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Three Dimensional Auto-Alignment of the ICSI Pipette
IEEE Access, 2019 Intracytoplasmic sperm injection (ICSI) is an assisted reproductive technology used in infertility treatment, where a single sperm is selected and immobilized using a glass injection pipette and is inserted directly into the cytoplasm of an oocyte under ...
Ferhat Sadak +2 more
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Sensors, 2023 Multiple autonomous underwater vehicles (AUVs) have gradually become the trend in underwater operations. Identifying and detecting these new underwater multi-targets is difficult when studying underwater moving targets. A 28-element transducer is used to
Xiaofeng Yin +3 more
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Reflection and refraction of an Airy beam at a dielectric interface [PDF]
, 2012 Reflection and refraction of a finite-power Airy beam at the interface between two dielectric media are investigated analytically and numerically. The formulation takes into account the paraxial nature of the optical beams to derive convenient field ...
Chremmos, Ioannis +1 more
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