Search Results for author: Frédéric Comby

Found 5 papers, 3 papers with code

Astronomical image time series classification using CONVolutional attENTION (ConvEntion)

1 code implementation3 Apr 2023 Anass Bairouk, Marc Chaumont, Dominique Fouchez, Jerome Paquet, Frédéric Comby, Julian Bautista

In this work, we solved various problems the datasets tend to suffer from and we present new results for classifications using astronomical image time series with an increase in accuracy of 13%, compared to state-of-the-art approaches that use image time series, and a 12% increase, compared to approaches that use light curves.

Classification Time Series +1

A study on the invariance in security whatever the dimension of images for the steganalysis by deep-learning

1 code implementation22 Feb 2023 Kévin Planolles, Marc Chaumont, Frédéric Comby

In this paper, we study the performance invariance of convolutional neural networks when confronted with variable image sizes in the context of a more "wild steganalysis".

Steganalysis

LSSD: a Controlled Large JPEG Image Database for Deep-Learning-based Steganalysis "into the Wild"

no code implementations5 Jan 2021 Hugo Ruiz, Mehdi Yedroudj, Marc Chaumont, Frédéric Comby, Gérard Subsol

In this paper, we describe a large JPEG database composed of 2 million colour and grey-scale images.

Cryptography and Security

How to augment a small learning set for improving the performances of a CNN-based steganalyzer?

no code implementations12 Jan 2018 Mehdi Yedroudj, Marc Chaumont, Frédéric Comby

To our knowledge, no study has been performed on the enrichment impact of a learning database on the steganalysis performance.

Steganalysis

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