Results 31 to 40 of about 13,506 (143)
Exploiting Loops in the Camera Array for Automatic Focusing Depth Estimation
International Journal of Advanced Robotic Systems, 2013 Autofocus is a fundamental and key problem for modern imaging sensor design. Although this problem has been well studied in single camera literature, unfortunately, little research has been done on large-scale camera arrays.
Tao Yang +3 more
doaj +1 more source
Leida xuebao, 2016 Sparse microwave imaging is new concept, theory and methodology of microwave imaging, which introduces the sparse signal processing theory to microwave imaging and combines them together to overcome the paradox of increasing system complexity and imaging
Zhang Zhe +3 more
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Clustered Sparsity-Driven SAR Imaging and Autofocus Algorithm in Structured Phase-Noisy Environments
IEEE Access, 2019 This paper presents a novel synthetic aperture radar (SAR) imaging and autofocus algorithm by exploiting the clustering property of the sparse scene in structured phase-noisy environments.
Yue Yang +3 more
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Image Reconstruction Using Autofocus in Single-Lens System
Applied Sciences, 2022 To reconstruct the wavefront in a single-lens coherent diffraction imaging (CDI) system, we propose a closed-loop cascaded iterative engine (CIE) algorithm based on the known information of the imaging planes.
Xuyang Zhou +5 more
doaj +1 more source
An Efficient Solution to the Factorized Geometrical Autofocus Problem [PDF]
, 2016 This paper describes a new search strategy within the scope of factorized geometrical autofocus (FGA) and synthetic-aperture-radar processing. The FGA algorithm is a fast factorized back-projection formulation with six adjustable geometry parameters.
Dammert, Patrik +3 more
core +1 more source
Fast ISAR autofocus algorithm via sub-aperture
The Journal of Engineering, 2019 Translational motion compensation (TMC) is a significant step for inverse synthetic aperture radar (ISAR), while phase autofocus plays an important role in TMC.
Jinjian Cai +3 more
doaj +1 more source
Leida xuebao, 2022 The radar echo signal may experience substantial two-dimensional spatial variance due to the nonlinear Synthetic Aperture Radar (SAR) trajectory. The traditional frequency-domain imaging algorithms based on the assumption of azimuth translational ...
Jianlai CHEN +5 more
doaj +1 more source
Joint sparsity-driven inversion and model error correction for radar imaging [PDF]
, 2009 Solution of inverse problems in imaging requires the use of a mathematical model of the observation process. However such models often involve errors and uncertainties themselves. The application of interest in this paper is synthetic aperture radar (SAR)
Cetin, Mujdat +3 more
core +2 more sources
, 2012 Synthetic aperture radar (SAR) images are often blurred by phase perturbations induced by uncompensated sensor motion and /or unknown propagation effects caused by turbulent media.
Mao, Xinhua, Zhu, Daiyin, Zhu, Zhaoda
core +1 more source
Advanced Functional Materials, EarlyView.Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi +5 more
wiley +1 more source