Results 21 to 30 of about 1,511 (175)
Modal Reconstruction Based on Arbitrary High-Order Zernike Polynomials for Deflectometry
Mathematics, 2023 Deflectometry is a non-destructive, full-field phase measuring method, which is usually used for inspecting optical specimens with special characteristics, such as highly reflective or specular surfaces, as well as free-form surfaces.
Duy-Thai Nguyen +5 more
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EFFECTS OF FUEL TEMPERATURE-SHAPING FUNCTIONS ON XENON OSCILLATIONS [PDF]
EPJ Web of Conferences, 2021 In coupled multiphysics simulations, single pin-averaged values are typically used to describe the temperature, power, and burnup within a given fuel pin.
Walker Erik +3 more
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Using Generalized Basis for Functional Expansion
Journal of Nuclear Engineering, 2021 Functional expansion has been rigorously studied as a promising method in stochastic neutron transport and multi-physics coupling. It is a method to represent data specified on a desired domain as an expansion of basis set in a continuous manner.
Zhuoran Han, Benoit Forget, Kord Smith
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Wavefront feature extraction for SAR target recognition
The Journal of Engineering, 2019 Synthetic aperture radar (SAR) target feature extraction is a key technology for SAR target recognition. The existing SAR feature extraction methods mainly focus on amplitude information of the SAR image in spite of phase information. This study proposes
Jiping Wang +3 more
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Zernike polynomials for photometric characterization of LEDs [PDF]
Journal of Optics, 2016 Kuala Lumpur, Malaysia, 23-26 April ...
Velázquez, J.L. +4 more
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Applied Sciences, 2019 In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations.
Yongkai Liu +6 more
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Validation of Mahajan's formula for scaling ocular higher-order aberrations by pupil size
Indian Journal of Ophthalmology, 2020 Purpose: Zernike polynomials for describing ocular higher order aberrations are affected by pupil aperture. The current study aimed to validate Mahajan's formula for scaling Zernike polynomials by pupil size.
Henry B Wallace +2 more
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Mathematics, 2020 In light of fine learning ability in the existing uncertainties, a sage revised reiterative even Zernike polynomials neural network (SRREZPNN) control with modified fish school search (MFSS) method is proposed to control the six-phase squirrel cage ...
Chih-Hong Lin
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Advanced analytic treatment and efficient computation of the diffraction integrals in the extended Nijboer-Zernike theory [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 The computational methods for the diffraction integrals that occur in the Extended Nijboer-Zernike (ENZ-) approach to circular, aberrated, defocused optical systems are reviewed and updated.
van Haver S., Janssen A. J. E. M.
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Zernike expansion of derivatives and Laplacians of the Zernike circle polynomials [PDF]
Journal of the Optical Society of America A, 2014 The partial derivatives and Laplacians of the Zernike circle polynomials occur in various places in the literature on computational optics. In a number of cases, the expansion of these derivatives and Laplacians in the circle polynomials are required. For the first-order partial derivatives, analytic results are scattered in the literature, starting as
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