Search Results for author: Alexis Lechervy

Found 9 papers, 4 papers with code

Structure-Preserving Transformers for Sequences of SPD Matrices

1 code implementation14 Sep 2023 Mathieu Seraphim, Alexis Lechervy, Florian Yger, Luc Brun, Olivier Etard

In recent years, Transformer-based auto-attention mechanisms have been successfully applied to the analysis of a variety of context-reliant data types, from texts to images and beyond, including data from non-Euclidean geometries.

 Ranked #1 on Sleep Stage Detection on MASS SS3 (Macro-averaged Accuracy metric)

EEG EEG based sleep staging

Training face verification models from generated face identity data

no code implementations2 Aug 2021 Dennis Conway, Loic Simon, Alexis Lechervy, Frederic Jurie

We find that the addition of a small amount of private data greatly improves the performance of our model, which highlights the limitations of using synthetic data to train machine learning models.

BIG-bench Machine Learning Face Recognition +3

Towards a General Model of Knowledge for Facial Analysis by Multi-Source Transfer Learning

no code implementations8 Nov 2019 Valentin Vielzeuf, Alexis Lechervy, Stéphane Pateux, Frédéric Jurie

This model outperforms its teacher on novel tasks, achieving results on par with state-of-the-art methods on 15 facial analysis tasks (and domains), at an affordable training cost.

Transfer Learning

Multi-Level Sensor Fusion with Deep Learning

no code implementations5 Nov 2018 Valentin Vielzeuf, Alexis Lechervy, Stéphane Pateux, Frédéric Jurie

In the context of deep learning, this article presents an original deep network, namely CentralNet, for the fusion of information coming from different sensors.

Sensor Fusion

RPNet: an End-to-End Network for Relative Camera Pose Estimation

1 code implementation22 Sep 2018 Sovann En, Alexis Lechervy, Frédéric Jurie

While state-of-the-art systems based on SIFT + RANSAC, are able to recover the translation vector only up to scale, RPNet is trained to produce the full translation vector, in an end-to-end way.

Pose Estimation Translation

CentralNet: a Multilayer Approach for Multimodal Fusion

2 code implementations22 Aug 2018 Valentin Vielzeuf, Alexis Lechervy, Stéphane Pateux, Frédéric Jurie

This paper proposes a novel multimodal fusion approach, aiming to produce best possible decisions by integrating information coming from multiple media.

Multi-Task Learning

CAKE: Compact and Accurate K-dimensional representation of Emotion

no code implementations30 Jul 2018 Corentin Kervadec, Valentin Vielzeuf, Stéphane Pateux, Alexis Lechervy, Frédéric Jurie

Alongside, Deep Neural Networks (DNN) are reaching excellent performances and are becoming interesting features extraction tools in many computer vision tasks. Inspired by works from the psychology community, we first study the link between the compact two-dimensional representation of the emotion known as arousal-valence, and discrete emotion classes (e. g. anger, happiness, sadness, etc.)

Ranked #24 on Facial Expression Recognition (FER) on AffectNet (Accuracy (7 emotion) metric)

Emotion Recognition Facial Expression Recognition (FER)

TS-Net: Combining modality specific and common features for multimodal patch matching

1 code implementation5 Jun 2018 Sovann En, Alexis Lechervy, Frédéric Jurie

Multimodal patch matching addresses the problem of finding the correspondences between image patches from two different modalities, e. g. RGB vs sketch or RGB vs near-infrared.

Multimodal Patch Matching

Cannot find the paper you are looking for? You can Submit a new open access paper.