no code implementations • 21 Aug 2024 • Loïc Denis, Emanuele Dalsasso, Florence Tupin
Reducing speckle fluctuations in multi-channel SAR images is essential in many applications of SAR imaging such as polarimetric classification or interferometric height estimation.
no code implementations • 15 Jul 2023 • Weiying Zhao, Charles-Alban Deledalle, Loïc Denis, Henri Maître, Jean-Marie Nicolas, Florence Tupin
In addition, we apply the simplified generalized likelihood ratio to detect the maximum change magnitude time, and the change starting and ending times.
no code implementations • 20 Jan 2023 • Zoé Berenger, Loïc Denis, Florence Tupin, Laurent Ferro-Famil, Yue Huang
Synthetic aperture radar tomographic imaging reconstructs the three-dimensional reflectivity of a scene from a set of coherent acquisitions performed in an interferometric configuration.
no code implementations • 22 Jul 2022 • Inès Meraoumia, Emanuele Dalsasso, Loïc Denis, Florence Tupin
Reducing speckle and limiting the variations of the physical parameters in Synthetic Aperture Radar (SAR) images is often a key-step to fully exploit the potential of such data.
no code implementations • 22 Jul 2022 • Inès Meraoumia, Emanuele Dalsasso, Loïc Denis, Rémy Abergel, Florence Tupin
Speckle filtering is generally a prerequisite to the analysis of synthetic aperture radar (SAR) images.
2 code implementations • 25 Oct 2021 • Emanuele Dalsasso, Loïc Denis, Florence Tupin
We introduce a self-supervised strategy based on the separation of the real and imaginary parts of single-look complex SAR images, called MERLIN (coMplex sElf-supeRvised despeckLINg), and show that it offers a straightforward way to train all kinds of deep despeckling networks.
no code implementations • 1 Jul 2021 • Benhood Rasti, Yi Chang, Emanuele Dalsasso, Loïc Denis, Pedram Ghamisi
Additionally, this review paper accompanies a toolbox to provide a platform to encourage interested students and researchers in the field to further explore the restoration techniques and fast-forward the community.
no code implementations • 12 Mar 2021 • Clément Rambour, Loïc Denis, Florence Tupin, Hélène Oriot, Yue Huang, Laurent Ferro-Famil
This segmentation process can be included within the 3-D reconstruction framework in order to improve the recovery of urban surfaces.
1 code implementation • 1 Feb 2021 • Nicolas Gasnier, Emanuele Dalsasso, Loïc Denis, Florence Tupin
This paper presents a despeckling method for Sentinel-1 GRD images based on the recently proposed framework "SAR2SAR": a self-supervised training strategy.
no code implementations • 1 Feb 2021 • Emanuele Dalsasso, Inès Meraoumia, Loïc Denis, Florence Tupin
The proposed method combines this multi-temporal average and the image at a given date in the form of a ratio image and uses a state-of-the-art neural network to remove the speckle in this ratio image.
1 code implementation • 28 Jun 2020 • Emanuele Dalsasso, Xiangli Yang, Loïc Denis, Florence Tupin, Wen Yang
Many different schemes have been proposed for the restoration of intensity SAR images.
5 code implementations • 26 Jun 2020 • Emanuele Dalsasso, Loïc Denis, Florence Tupin
A study with synthetic speckle noise is presented to compare the performances of the proposed method with other state-of-the-art filters.
no code implementations • 23 Oct 2017 • Shibin Parameswaran, Charles-Alban Deledalle, Loïc Denis, Truong Q. Nguyen
Image restoration methods aim to recover the underlying clean image from corrupted observations.