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TZID:Europe/Paris
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UID:5704@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20230310T143000
DTEND;TZID=Europe/Paris:20230310T153000
DTSTAMP:20241120T200152Z
URL:https://www.i2m.univ-amu.fr/evenements/polarimetric-phase-retrieval-un
 iqueness-and-algorithms/
SUMMARY:Julien Flamant (CRAN\, Université de Lorraine\, Nancy): Polarimetr
 ic phase retrieval: uniqueness and algorithms
DESCRIPTION:Julien Flamant: Phase retrieval problems are ubiquitous in imag
 ing applications\, such as crystallography\, coherent diffraction imaging 
 or ptychography\, among others. To enable the systematic use of light pola
 rization information in such problems\, we propose a novel phase retrieval
  model\, called polarimetric phase retrieval\, that leverages the physics 
 of polarization measurement in optics.\nIn this talk\, I will first detail
  the uniqueness properties of this new model by unraveling equivalencies w
 ith a peculiar polynomial factorization problem. The latter will turn out 
 to play a critical role\, both regarding uniqueness of the problem and the
  design of algebraic reconstruction methods based on approximate greatest 
 common divisor computations. I will eventually highlight a computationally
  efficient reconstruction strategy for polarimetric phase retrieval that c
 ombines algebraic with more standard iterative approaches. Several numeric
 al experiments on synthetic data will be presented..\n[su_spacer size="10"
 ]\n\n\nSéminaire Signal et Apprentissage[su_spacer size="10"]
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 023/02/Julien_Flamant.png
CATEGORIES:Séminaire,Signal et Apprentissage
LOCATION:I2M Chateau-Gombert - CMI\, 39 Rue Joliot Curie\, Marseille\, 1301
 3\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=39 Rue Joliot Curie\, Marse
 ille\, 13013\, France;X-APPLE-RADIUS=100;X-TITLE=I2M Chateau-Gombert - CMI
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DTSTART:20221030T020000
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