Search Results for author: Charles-Alban Deledalle

Found 11 papers, 1 papers with code

Poisson noise reduction with non-local PCA

no code implementations2 Jun 2012 Joseph Salmon, Zachary Harmany, Charles-Alban Deledalle, Rebecca Willett

Photon-limited imaging arises when the number of photons collected by a sensor array is small relative to the number of detector elements.

Astronomy Denoising +1

Characterizing the maximum parameter of the total-variation denoising through the pseudo-inverse of the divergence

no code implementations8 Dec 2016 Charles-Alban Deledalle, Nicolas Papadakis, Joseph Salmon, Samuel Vaiter

Though, it is of importance when tuning the regularization parameter as it allows fixing an upper-bound on the grid for which the optimal parameter is sought.

Denoising

A unified framework for hard and soft clustering with regularized optimal transport

no code implementations12 Nov 2017 Jean-Frédéric Diebold, Nicolas Papadakis, Arnaud Dessein, Charles-Alban Deledalle

In this paper, we formulate the problem of inferring a Finite Mixture Model from discrete data as an optimal transport problem with entropic regularization of parameter $\lambda\geq 0$.

Clustering Relation

Image denoising with generalized Gaussian mixture model patch priors

no code implementations5 Feb 2018 Charles-Alban Deledalle, Shibin Parameswaran, Truong Q. Nguyen

In this paper, we show that a generalized Gaussian mixture model (GGMM) captures the underlying distribution of patches better than a GMM.

Image Denoising Image Restoration

Machine learning in acoustics: theory and applications

no code implementations11 May 2019 Michael J. Bianco, Peter Gerstoft, James Traer, Emma Ozanich, Marie A. Roch, Sharon Gannot, Charles-Alban Deledalle

Acoustic data provide scientific and engineering insights in fields ranging from biology and communications to ocean and Earth science.

BIG-bench Machine Learning

Block based refitting in $\ell_{12}$ sparse regularisation

no code implementations22 Oct 2019 Charles-Alban Deledalle, Nicolas Papadakis, Joseph Salmon, Samuel Vaiter

This is done through the use of refitting block penalties that only act on the support of the estimated solution.

Image Restoration

WaveQ: Gradient-Based Deep Quantization of Neural Networks through Sinusoidal Adaptive Regularization

no code implementations29 Feb 2020 Ahmed T. Elthakeb, Prannoy Pilligundla, FatemehSadat Mireshghallah, Tarek Elgindi, Charles-Alban Deledalle, Hadi Esmaeilzadeh

We show how SINAREQ balance compute efficiency and accuracy, and provide a heterogeneous bitwidth assignment for quantization of a large variety of deep networks (AlexNet, CIFAR-10, MobileNet, ResNet-18, ResNet-20, SVHN, and VGG-11) that virtually preserves the accuracy.

Quantization

WAVEQ: GRADIENT-BASED DEEP QUANTIZATION OF NEURAL NETWORKS THROUGH SINUSOIDAL REGULARIZATION

1 code implementation1 Jan 2021 Ahmed T. Elthakeb, Prannoy Pilligundla, Tarek Elgindi, FatemehSadat Mireshghallah, Charles-Alban Deledalle, Hadi Esmaeilzadeh

We show how WaveQ balance compute efficiency and accuracy, and provide a heterogeneous bitwidth assignment for quantization of a large variety of deep networks (AlexNet, CIFAR-10, MobileNet, ResNet-18, ResNet-20, SVHN, and VGG-11) that virtually preserves the accuracy.

Quantization

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

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

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