Julien Flamant


CNRS, CRAN, Université de Lorraine, Nancy, France.

Welcome !

I am a CNRS research scientist at CRAN since 2019. I am a member of the SiMul research group., the multidimensional signal processing research group in the BioSiS department at CRAN.

I develop signal processing theory and methods to leverage polarization properties in physics, focusing on interpretable, geometric and algebraic approaches.
My research interests include bivariate signal processing, polarimetric imaging, quaternion-valued signal processing, with applications to underwater acoustics and gravitational waves in astrophysics.

ongoing research projects

News I have recently been awarded a ANR Young researcher Grant ATEMPORAL, with funding for a master internship followed by a Ph.D., plus a 18 month postdoc, as well as extensive research support for travel.

Multiple positions (master, Ph.D. and postdoc) are opened right now, in relation with the research projects above. Interested? contact me directly by email, joining a CV and a brief statement of interest.


Apr 13, 2024 Together with Nicolas Le Bihan, I will be presenting a tutorial at EUSIPCO 2024 titled “An introduction to bivariate signal processing: polarization, quaternions and geometric representations”. See you all in Lyon next August!
Mar 15, 2024 A 2 year postdoctoral researcher position is open , on algebraic and tensor methods for polarimetric phase retrieval, starting anytime in 2024, in collaboration with Konstantin Usevich. See here for full details. Please reach out if you are interested!
Dec 13, 2023 Our conference paper Physically-constrained block-term tensor decomposition for polarimetric image recovery has been accepted at ICASSP’2024. See you in Seoul, South Korea next April!.
Nov 8, 2023 Our paper Polarimetric Fourier Phase Retrieval has been accepted for publication in SIAM Journal of Imaging Sciences.
Sep 8, 2023 Our overview paper Quaternions in Signal and Image Processing: A comprehensive and objective overview has been published in IEEE Signal Processing Magazine.

selected publications

  1. SIIMS
    Polarimetric Fourier phase retrieval
    Julien FlamantKonstantin UsevichMarianne Clausel, and David Brie
    SIAM Journal of Imaging Sciences, 2024
    Quaternions in Signal and Image Processing: A comprehensive and objective overview
    IEEE Signal Processing Magazine, 2023