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Your search keyword '"Georges, Marc P."' showing total 26 results
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26 results on '"Georges, Marc P."'

1. Optical modeling for the LiteBIRD Medium and High Frequency Telescope

Author

Lamagna, Luca, primary, Franceschet, Cristian, additional, De Petris, Marco, additional, Gudmundsson, Jon E., additional, Hargrave, Peter C., additional, Maffei, Bruno, additional, Noviello, Fabio, additional, O'Sullivan, Creidhe, additional, Paiella, Alessandro, additional, Columbro, Fabio, additional, Austermann, Jason E., additional, Bersanelli, Marco, additional, Chahadih, Abdallah, additional, Cicuttin, Matteo, additional, Clermont, Lionel, additional, De Bernardis, Paolo, additional, Fleury-Frenette, Karl, additional, Georges, Marc P., additional, Geuzaine, Christophe, additional, Hastanin, Juriy, additional, Henrot-Versillé, Sophie, additional, Hubmayr, Johannes, additional, Jaehnig, Greg, additional, Keskitalo, Reijo, additional, Masi, Silvia, additional, Matsuda, Frederick, additional, Matsumura, Tomotake, additional, Montier, Ludovic, additional, Mot, Baptiste, additional, Piacentini, Francesco, additional, Pisano, Giampaolo, additional, Plesseria, Jean Yves, additional, Ritacco, Alessia, additional, Savini, Giorgio, additional, Shitvov, Alexei, additional, Suzuki, Aritoki, additional, Trappe, Neil, additional, and Winter, Berend, additional

Published
2022
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18. Speckle interferometry at 10 micrometers wavelength: a combined thermography and interferometry technique and its application in aeronautical nondestructive testing

Author

Georges, Marc P., additional, Vandenrijt, Jean-François, additional, Thizy, Cédric, additional, Alexeenko, Igor, additional, Pedrini, Giancarlo, additional, Rochet, Jonathan, additional, Vollheim, Birgit, additional, Jorge, Iagoba, additional, López, Ion, additional, and Osten, Wolfgang, additional

Published
2014
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25. On design of hybrid diffractive optics for achromatic extended depth-of-field (EDoF) RGB imaging

Author

SeyyedReza MiriRostami, Samuel Pinilla, Igor A. Shevkunov, Vladimir Katkovnik, Karen Eguiazarian, Georges, Marc P., Popescu, Gabriel, Verrier, Nicolas, Tampere University, and Computing Sciences

Subjects
FOS: Physical sciences, Computational Physics (physics.comp-ph), 113 Computer and information sciences, Physics - Computational Physics, Optics (physics.optics), Physics - Optics
Abstract

A hybrid imaging system is a simultaneous physical arrangement of a refractive lens and a multilevel phase mask (MPM) as a diffractive optical element (DOE). The favorable properties of the hybrid setup are improved extended-depth-of-field (EDoF) imaging and low chromatic aberrations. We built a fully differentiable image formation model in order to use neural network techniques to optimize imaging. At the first stage, the design framework relies on the model-based approach with numerical simulation and end-to-end joint optimization of both MPM and imaging algorithms. In the second stage, MPM is fixed as found at the first stage, and the image processing is optimized experimentally using the CNN learning-based approach with MPM implemented by a spatial light modulator. The paper is concentrated on a comparative analysis of imaging accuracy and quality for design with various basic optical parameters: aperture size, lens focal length, and distance between MPM and sensor. We point out that the varying aperture size, lens focal length, and distance between MPM and sensor are for the first time considered for end-to-end optimization of EDoF. We numerically and experimentally compare the designs for visible wavelength interval [400-700]nm and the following EDoF ranges: [0.5-100]m for simulations and [0.5-1.9]m for experimental tests. This study concerns an application of hybrid optics for compact cameras with aperture [5-9] mm and distance between MPM and sensor [3-10]mm., 16 pages, 11 figures, 1 table

Published
2022

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