Workshop Deblending with Deep Learning

Europe/Paris
Main meeting room (François Arago Centre (FACe))

Main meeting room

François Arago Centre (FACe)

13 rue Watt 3rd floor 75013 Paris
Alexandre Boucaud (LAL)
Description

With the current (DES, KIDs, HSC) and future (LSST, Euclid, WFIRST) generation of large scale deep surveys, we will have to deal with an increasing number of crowded fields in which a high number of objects are blended. This poses a challenge both in terms of photometry (recovering the flux of individual objects) as well as for shape measurements (one of the main science goals) and galaxy morphology.

We organize this 1-day workshop to gather astronomers interested in exploring the use of deep learning methods to tackle image deblending. The scope is to discuss the creation of a data/science challenge on the topic to foster the emergence of new algorithms. We will need to define a score (i.e. what does "deblending" means computationally) and a strategy to gather labeled datasets or produce them.

In the morning we will start by describing the RAMP platform (www.ramp.studio) developed at the Paris-Saclay center for Data Science to create open source challenges on various scientific topics.

Just before and after lunch, the participants will be able to give presentations on their work on this topic (or closely related). The talks should aim at preparing the afternoon discussion by focusing on one or both topics (metric & dataset).

Then we will brainstorm on the two main topics related to the challenge :

  1. the definition of one of several metrics / scores
  2. the selection of open and labeled data

The event will be hosted at the François Arago Center (FACe).

There will be a possibility to join remotely the workshop.

Participants
  • Alexandre Boucaud
  • Cyrille Doux
  • Cécile Roucelle
  • Emmanuel Bertin
  • Eric Aubourg
  • Frédéric Suter
  • Guillaume Lemaitre
  • Marc HUERTAS-COMPANY
  • Maxime Paillassa
  • mehdi cherti
  • Valerio Roscani
  • Yetkin Yilmaz
    • 10:00 10:15
      Welcome and tour de table 15m Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
      Speaker: Alexandre Boucaud (LAL)
    • 10:15 10:30
      Motivations for the workshop 15m Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
      Speaker: Alexandre Boucaud (LAL)
      Transparents
    • 10:30 11:10
      Paris-Saclay Center for Data Science Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
      • 10:30
        Classification and scoring in a RAMP 20m
        Speaker: Mehdi Cherti (LAL/Appstat)
        Transparents
      • 10:50
        REX: Particle tracking RAMP 20m
        Speaker: Yetkin Yilmaz (LAL/Appstat)
        Transparents
    • 11:10 11:30
      Break 20m Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
    • 11:30 12:30
      Presentations: Morning Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
      • 11:30
        Projet européen PRACE 20m
        Speaker: Frédéric Suter (CCIN2P3)
        Transparents
      • 11:50
        Ground+space deblending and shear measurement using machine learning 20m
        Speaker: Cyrille Doux (APC)
        Transparents
      • 12:10
        Deblending strategies for the Euclid pipeline 20m
        Speaker: Valerio Roscani (INAF Roma)
        Transparents
    • 12:30 14:00
      Lunch 1h 30m Les Coulisses du Vin (Restaurant)

      Les Coulisses du Vin

      Restaurant

      1 Rue Primo Levi, 75013 Paris
    • 14:00 15:00
      Presentations: afternoon Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
      • 14:00
        Deep leaning for galaxy surface brightness profile fitting 20m
        Speaker: Diego Tuccillo (LERMA / Ecole des Mines)
      • 14:20
        Deblending in crowded star fields using convolutional neural networks 20m
        Speaker: Maxime Paillassa (IAP)
        Transparents
      • 14:40
        Object deblending with FCNs 20m
        Speaker: Marc Huertas-Company (LERMA)
        Transparents
    • 15:00 16:00
      Discussions: Scoring Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
    • 16:00 16:20
      Break 20m Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
    • 16:20 17:30
      Discussions: Datasets Main meeting room

      Main meeting room

      François Arago Centre (FACe)

      13 rue Watt 3rd floor 75013 Paris
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