Search Results for author: Florence Tupin

Found 13 papers, 6 papers with code

Patch-based adaptive temporal filter and residual evaluation

no code implementations14 Feb 2024 Weiying Zhao, Paul Riot, Charles-Alban Deledalle, Henri Maître, Jean-Marie Nicolas, Florence Tupin

Spatial adaptive denoising methods can improve the patch-based weighted temporal average image when the time series is limited.

Denoising Time Series +1

Multitemporal SAR images change detection and visualization using RABASAR and simplified GLR

no code implementations15 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.

Change Detection Image Denoising

A Deep Learning Approach for SAR Tomographic Imaging of Forested Areas

no code implementations20 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.

Fast strategies for multi-temporal speckle reduction of Sentinel-1 GRD images

no code implementations22 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.

Time Series Time Series Analysis

Unrolling PALM for sparse semi-blind source separation

1 code implementation ICLR 2022 Mohammad Fahes, Christophe Kervazo, Jérôme Bobin, Florence Tupin

Sparse Blind Source Separation (BSS) has become a well established tool for a wide range of applications - for instance, in astrophysics and remote sensing.

blind source separation

As if by magic: self-supervised training of deep despeckling networks with MERLIN

1 code implementation25 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.

Image Denoising Image Restoration +1

Urban Surface Reconstruction in SAR Tomography by Graph-Cuts

no code implementations12 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.

Segmentation Surface Reconstruction

Despeckling Sentinel-1 GRD images by deep learning and application to narrow river segmentation

1 code implementation1 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.

Image Denoising Image Restoration +1

Exploiting multi-temporal information for improved speckle reduction of Sentinel-1 SAR images by deep learning

no code implementations1 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.

Denoising Time Series +1

SAR2SAR: a semi-supervised despeckling algorithm for SAR images

4 code implementations26 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.

Image Denoising Image Restoration +3

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