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SUMMARY:Pizza\, Optics and Beer - October
DTSTART;VALUE=DATE:20171004
DTSTAMP:20260509T161115Z
UID:483438f5dc9998c7650fc86420337866c747d5f7531d115c9f3ec672
CATEGORIES:Conferences - Seminars
DESCRIPTION:Alexandre Goy\nThe EPFL Photonics Chapter (EPC) is very plea
 sed to announce and cordially invite you to our monthly 'Pizza-optics-bee
 r' (POB) seminar on October 4th 2017 (Wednesday) at 18:15 in the roo
 m CM 1 120.\n\nThis month we will have the pleasure to host Alexandre Go
 y with the presentation entitled\n\n"Learning optical tomography"\n\nFor 
 organizational purposes (if you want to eat pizza!)\, please confirm your
  participation using this Doodle.\n \nHope to see you there\,\nThe team 
 of the EPFL Photonics Chapter\n \n \nAbstract:\nOptical tomography is an
  imaging technique that aims at reconstructing the three-dimensional distr
 ibution of the refractive index of a sample. This can be used\, for exampl
 e\, in biology to study the structure of cells in three dimensions and how
  cell get organized in space. In order to reconstruct the refractive index
 \, the object is illuminated with plane waves at different incidence angle
 s. For each incident wave\, the scattered field is measured. By using a si
 mple linear inversion method\, it is possible to retrieve the refractive i
 ndex from these measurements. However\, this conventional method (based on
  the Rytov approximation) does not account for multiple scattering and is 
 thus limited to weakly scattering object\, i.e. object displaying weak ind
 ex contrast.\nIn this talk\, we will present a recent method called Learni
 ng tomography (LT) that includes multiple scattering and thus allows us to
  expand the limits of optical tomography. We will explain the working prin
 ciple of LT and show its advantages over conventional linear techniques.
LOCATION:CM 1 120 https://plan.epfl.ch/?room==CM%201%20120
STATUS:CONFIRMED
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