Results 1 to 10 of about 1,097,686 (233)
Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam [PDF]
Sensors, 2023 In order to solve the problem of atmospheric influence on the far-field measurement of the quality of a laser beam, we proposed a direct wavefront measurement system based on the Hartmann detection principle, which can measure large apertures and high ...
Gangyu Wang +4 more
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Influence of Image Processing Method on Wavefront Reconstruction Accuracy of Large-Aperture Laser [PDF]
Photonics, 2023 In order to improve the wavefront reconstruction accuracy of a large-aperture laser, this paper proposed an adaptive window preprocessing algorithm based on the threshold center of gravity method (AW-TCoG).
Gangyu Wang +5 more
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Estimation and Validation of Cardiac Conduction Velocity and Wavefront Reconstruction Using Epicardial and Volumetric Data. [PDF]
IEEE Trans Biomed Eng, 2021 Objective: In this study, we have used whole heart simulations parameterized with large animal experiments to validate three techniques (two from the literature and one novel) for estimating epicardial and volumetric conduction velocity (CV). Methods: We
Good WW +9 more
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Wavefront Reconstruction of Shack-Hartmann with Under-Sampling of Sub-Apertures
Photonics, 2023 Shack-Hartmann wavefront sensor plays a key role in adaptive optics (AO) systems, which detect the aberrant wavefront by an array of micro-lenslets across the aperture pupil.
Jian Huang +3 more
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IEEE Photonics Journal, 2021 Wavefront reconstruction and correction under strong turbulence has become a crucial issue for adaptive optics systems. An approach using a plenoptic sensor has attracted high attention recently.
Jintian Hu +5 more
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On-sky Reconstruction of Keck Primary Mirror Piston Offsets Using a Zernike Wavefront Sensor [PDF]
Astrophysical Journal, 2022 The next generation of large ground- and space-based optical telescopes will have segmented primary mirrors. Co-phasing the segments requires a sensitive wavefront sensor capable of measuring phase discontinuities.
M. V. van Kooten +5 more
semanticscholar +3 more sources
An Alternative Wavefront Reconstruction Method for Human Eyes. [PDF]
Journal of refractive surgery, 2020 PURPOSE To expand upon and clinically demonstrate the results of a new polynomial decomposition method. METHODS To discuss the theoretical considerations comparing the qualitative and quantitative information produced by the Zernike coefficients and a ...
D. Gatinel +3 more
semanticscholar +2 more sources
A mathematical framework for nonlinear wavefront reconstruction in adaptive optics systems with Fourier-type wavefront sensing [PDF]
Inverse Problems, 2023 Advanced adaptive optics (AO) instruments have applications in ophthalmic imaging, free-space optical communications and the future generation of extremely large telescopes.
Victoria Hutterer +2 more
semanticscholar +2 more sources
Mathematics, 2020 Mathematical modelling methods have several limitations when addressing complex physics whose calculations require considerable amount of time. This is the case of adaptive optics, a series of techniques used to process and improve the resolution of ...
Sergio Luis Suárez Gómez +4 more
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Applied SciencesThe wavefront reconstruction is a crucial step in determining the performance of wavefront detection instruments. The wavefront reconstruction algorithm is primarily evaluated in three dimensions: accuracy, speed, and noise immunity.
Shuhao Liu, Hui Zhong, Yanqiu Li, Ke Liu
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