Robust autofocusing for scanning electron microscopy based on a dual deep learning network. [PDF]
Sci Rep, 2021 Scanning electron microscopy (SEM) is a high-resolution imaging technique with subnanometer spatial resolution that is widely used in materials science, basic science, and nanofabrication.
Lee W +5 more
europepmc +4 more sources
Innovative Image Processing Method to Improve Autofocusing Accuracy. [PDF]
Sensors (Basel), 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 ...
Liu CS, Tu HD.
europepmc +2 more sources
Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method. [PDF]
Sensors (Basel), 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 ...
Wang H, Yang Q, Wang H, Deng B.
europepmc +2 more sources
Sparse Regularization with a Non-Convex Penalty for SAR Imaging and Autofocusing [PDF]
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
doaj +2 more sources
A Novel Fuzzy Controller for Visible-Light Camera Using RBF-ANN: Enhanced Positioning and Autofocusing. [PDF]
Sensors (Basel), 2022 To obtain high-precision for focal length fitting and improve the visible-light camera autofocusing speed, simultaneously, the backlash caused by gear gaps is eliminated.
Zhou J, Xue L, Li Y, Cao L, Chen C.
europepmc +2 more sources
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
doaj +2 more sources
Experimental generation of arbitrary abruptly autofusing Circular Airy Gaussian vortex vector beams. [PDF]
Sci Rep, 2022 Complex vector modes represent a general state of light nonseparable in their spatial and polarization degrees of freedom, which have inspired a wide variety of novel applications and phenomena, such as their unexpected propagation behaviour. For example,
Hu XB +3 more
europepmc +2 more sources
Fast autofocusing based on single-pixel moment detection. [PDF]
Commun EngTraditional image processing-based autofocusing techniques require the acquisition, storage, and processing of large amounts of image sequences, constraining focusing speed and cost.
Chen H +6 more
europepmc +2 more sources
Random Stepped Frequency ISAR 2D Joint Imaging and Autofocusing by Using 2D-AFCIFSBL [PDF]
Remote SensingWith the increasingly complex electromagnetic environment faced by radar, random stepped frequency (RSF) has garnered widespread attention owing to its remarkable Electronic Counter-Countermeasure (ECCM) characteristic, and it has been universally ...
Yiding Wang +3 more
doaj +2 more sources
A Novel Deep Unfolding Network for Multi-Band SAR Sparse Imaging and Autofocusing [PDF]
Remote SensingThe sparse imaging network of synthetic aperture radar (SAR) is usually designed end to end and has a limited adaptability to radar systems of different bands.
Xiaopeng Li +5 more
doaj +2 more sources