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Research

Signal-Images en Sciences de l'Univers

Head : Yannick Deville - Deputy : Eric Anterrieu

The multidisciplinary axis entitled Signal-Images in Universe Sciences brings teaching and research staff together around research topics linked with the signal and image processing within the context of Universe Sciences, with an involvement in instrumental development. 

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For each highlighted topic, methodological aspects are developed in order to be applied to Universe Sciences, in close collaborations with the other research groups of the Laboratory or of the Midi-Pyrenees Observatory. The main studied topics are the following ones: 

  • imaging
  • signal/ image modelling and analysis
  • blind source separation
  • deconvolution and image reconstruction

These research topics are anchored in the community of Information and Communication Sciences and Technology but are developed in an Astrophysics & Planetology Laboratory. This naturally leads us to take part to instrumental projects in the field of Universe Sciences. For example: 

  • Thanks to our involvement in the SMOS project (interferometry for Earth observation), we are now recognized by ESA as an ESL (Expert Support Laboratory) in the field of image reconstruction and instrumental calibration.
  • We are also involved in data processing for the integral-field spectrograph MUSE project, which is issued from a 7 European Laboratory consortium, amongst which is the IRAP. Cooperating with 3 other French Laboratories (CRAL-Lyon, OCA-Nice, LSIIT-Strasbourg), we are working, through the ANR DAHLIA project, on hyperspectral data processing, in general and in the particular case of MUSE.
  • Finally, we initiated the Fresnel project which is supported by the CNES and the RTRA STAE. The long-term objective is to design a space mission dedicated to the high-resolution and high (dynamic) contrast study of the universe in the ultraviolet domain. The mission will consist in two light spacecrafts flying in formation at the Lagrangian point L2 Earth-Sun by 2025-2030, with a 6 to 10 meters diameter Fresnel grid. A community of researchers has now formed around the the astrophysical applications of the concept of Fresnel grid. For further details about the Fresnel project, click here.
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