Search Results for author: Herwig Wendt

Found 10 papers, 4 papers with code

In-Flight Estimation of Instrument Spectral Response Functions Using Sparse Representations

no code implementations8 Apr 2024 Jihanne El Haouari, Jean-Michel Gaucel, Christelle Pittet, Jean-Yves Tourneret, Herwig Wendt

Accurate estimates of Instrument Spectral Response Functions (ISRFs) are crucial in order to have a good characterization of high resolution spectrometers.

Learning grounded word meaning representations on similarity graphs

1 code implementation EMNLP 2021 Mariella Dimiccoli, Herwig Wendt, Pau Batlle

This paper introduces a novel approach to learn visually grounded meaning representations of words as low-dimensional node embeddings on an underlying graph hierarchy.

Graph Embedding

Graph Constrained Data Representation Learning for Human Motion Segmentation

1 code implementation ICCV 2021 Mariella Dimiccoli, Lluís Garrido, Guillem Rodriguez-Corominas, Herwig Wendt

Recently, transfer subspace learning based approaches have shown to be a valid alternative to unsupervised subspace clustering and temporal data clustering for human motion segmentation (HMS).

Clustering Motion Segmentation +3

Learning event representations for temporal segmentation of image sequences by dynamic graph embedding

no code implementations8 Oct 2019 Mariella Dimiccoli, Herwig Wendt

The main advantage of DGE over state-of-the-art self-supervised approaches is that it does not require any training set, but instead learns iteratively from the data itself a low-dimensional embedding that reflects their temporal and semantic similarity.

Domain Adaptation Dynamic graph embedding +5

Enhancing temporal segmentation by nonlocal self-similarity

1 code implementation14 Jun 2019 Mariella Dimiccoli, Herwig Wendt

Temporal segmentation of untrimmed videos and photo-streams is currently an active area of research in computer vision and image processing.

Event Segmentation Segmentation

Nonnegative Matrix Factorization with Transform Learning

no code implementations11 May 2017 Dylan Fagot, Cédric Févotte, Herwig Wendt

Traditional NMF-based signal decomposition relies on the factorization of spectral data, which is typically computed by means of short-time frequency transform.

Audio Signal Processing

Bayesian selection for the l2-Potts model regularization parameter: 1D piecewise constant signal denoising

no code implementations27 Aug 2016 Jordan Frecon, Nelly Pustelnik, Nicolas Dobigeon, Herwig Wendt, Patrice Abry

Piecewise constant denoising can be solved either by deterministic optimization approaches, based on the Potts model, or by stochastic Bayesian procedures.

Denoising

Bayesian estimation of the multifractality parameter for image texture using a Whittle approximation

no code implementations17 Oct 2014 Sébastien Combrexelle, Herwig Wendt, Nicolas Dobigeon, Jean-Yves Tourneret, Steve McLaughlin, Patrice Abry

Multifractal analysis is a useful signal and image processing tool, yet, the accurate estimation of multifractal parameters for image texture remains a challenge.

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