In the headlines
2 April 2013
about us
The Hubert Curien laboratory is a joint research unit within the Jean Monnet University, Saint-Etienne and the National Research Centre "CNRS". It’s therefore the mixed research unit UMR 5516 with 75 researchers and teacher-researchers who are permanent staff, 20 engineers and administrative personnel, 55 PhD and post-PhD students. This makes the Hubert Curien laboratory with a total of 150 staff the most important of all Saint-etienne’s university poles. A large range of activities are (...)
21 December 2012
Journée scientifique LIMA2 2013
La journée scientifique régionale du projet LIMA2 (Loisir et Images) aura lieu le 31 janvier 2013 à Lyon (Campus de la Doua, amphithéâtre de Polytech). Cette journée, co-organisée par le LIRIS et le Laboratoire Hubert-Curien, est financée par l’ARC6 de la région Rhône-Alpes et soutenue par le pôle Imageinove. Elle est ouverte à tous les chercheurs et doctorants de la région intéressés par le domaine de l’image et de la vidéo numérique (analyse, traitement, informatique graphique,..). La participation est (...)
11 June 2012
International workshop on METALLIC NANO-OBJECTS
The 1st international workshop on METALLIC NANO-OBJECTS: FROM FUNDAMENTALS TO APPLICATIONS - elaboration, characterization, properties and applications - will be held in Saint-Etienne from November 15 to November 16, 2012.
22 May 2012
European Cooperation in the field of Scientific and Technical Research
The "Laboratoire Hubert Curien" belongs to this consortium.
15 May 2012
Charles Deledalle receives a Best PhD thesis award
Charles Deledalle will receive an award for the best French PhD thesis in signal and image processing in June at the 52nd meeting of the French association for electrical and information engineering (club EEA). This prestigious award is given each year to an outstanding PhD in the field of signal and image processing. Charles Deledalle has been supervised during his PhD thesis by Florence Tupin at Telecom Paristech and Loic Denis at Telecom Saint-Etienne / Laboratoire Hubert Curien. (...)
21 March 2012
Hubert Curien laboratory participates in ACTMOST
The partners and key-researchers of ACTMOST constitute a consortium with an excellent track record in micro-optics services to industry. ACTMOST ows its present-day collective excellencein the field of micro-optics to years of experience in collaborative efforts, to its well-structured and deeply-integrated technological facilities, and to proven know-how in exploitation of R&D results and joint expertise in transfer of knowledge.ACTMOST forms a unique world-force in micro-optics technology with unprecedented cohesion and coherence that operates as a pan-European access centre for micro-optics.
16 November 2011
Domain Adaptation with Good Edit Similarities: a Sparse Way to deal with Scaling and Rotation Problems in Image Classification (Best paper award of the 23rd IEEE International Conference on Tools with Artificial Intelligence - ICTAI’11 - Boca Raton USA)
Abstract: In many real-life applications, the available source training information is either too small or not representative
enough of the underlying target test problem. In the past few years, a new line of machine learning research has been developed to overcome such awkward situations, called Domain Adaptation (DA), giving rise to many adaptation algorithms and theoretical results in the form of generalization bounds. In this paper, a novel contribution is proposed in the form of a DA algorithm dealing with string-structured data, inspired from the DA support vector machine (SVM) technique introduced in [Bruzzone et al, PAMI 2010]. To ensure the convergence
of SVM-based learning, the similarity functions involved in the process must be valid kernels, i.e. positive semi-definite (PSD) and symmetric. However, in the string-based context that we are considering in this paper, this condition is often not satisfied. Indeed, it has been proven that most string similarity functions based on the edit distance are not PSD. To overcome this drawback, we make use in this paper of the new theory of learning with good similarity functions introduced by Balcan et al., which (i) does not require the use of a valid kernel to
learn well and (ii) allows us to induce sparser models. We take advantage of this theoretical framework to propose a new DA algorithm using good edit similarity functions. Using a suitable
string-representation of handwritten digits, we show that are
our new algorithm is very efficient to deal with the scaling and
rotation problems usually encountered in image classification.
25 July 2011
Resonant diffraction grating designed for tuning a Cr:ZnSe laser in Littrow configuration
Abstract: We report the first demonstration of resonant- grating-based laser wavelength tuning in the mid-infrared spec- tral domain and with Littrow mounting of the grating. We show for a mid-infrared Cr:ZnSe laser that this tuning tech- nique is much more wavelength selective than prism-based tun- ing, while inducing very low cavity losses (around 2%), which are at least two times smaller than in the case of a standard metal grating. Furthermore, the resonant grating allows tun- ing the Cr:ZnSe laser over as much as 400 nm around a center wavelength of 2.38 μm. This shows the potential of employing Littrow-mounted resonant diffraction gratings for controlling and tuning the emission wavelength of lasers emitting in the mid-infrared spectral domain and other wavelength regions.
5 July 2011
Evidence of surface plasmon resonance in ultrafast laser-induced ripples
The sensitivity of grating-coupled Surface Plasmon Polaritons (SPPs) on metallic surface has been exploited to investigate the correlation between ripples formation under ultrashort laser exposure and SPPs generation conditions. Systematic examination of coupling of single ultrashort laser pulse on gratings with appropriate periods ranging from 440 nm to 800 nm has been performed. Our approach reveals that a surface plasmon is excited only for an appropriate grating period, the nickel sample exhibits fine ripples pattern, evidencing the plasmonic nature of ripples generation. We propose a systematic investigation supported by a comprehensive study on the obtained modulation of such a coupling efficiency by means of a phenomenological Drude-Lorentz model which captures possible optical properties modification under femtosecond irradiation.
30 March 2011
MANUTECH-SISE : Laboratoire d’excellence
Le Laboratoire d’excellence MANUTECH-SISE a été sélectionné par le jury international du programme investissement d’avenir ! Il a été classé 1er ex aequo avec 39 autres projets (sur une centaine retenus) et a été noté A+.
Il s’agit incontestablement d’un nouveau succès pour la dynamique qui a été mise en place entre les acteurs des laboratoires publics, les centres techniques et les entreprises privées autour de la problématique de l’ingénierie des surfaces. Après l’équipement d’excellence MANUTECH-USD, la validation du laboratoire d’excellence MANUTECH-SISE accélère la mise en oeuvre du programme MANUTECH.
20 January 2011
Equipement d’excellence MANUTECH-USD
Le projet d’Equipement d’Excellence MANUTECH Ultrafast Surface Design a été sélectionné par le jury international du programme « Investissements d’Avenir » ! Ce jeudi 20 janvier 2011, la ministre de l’enseignement supérieur et de la recherche Valérie Pécresse a invité Florent Pigeon (coordinateur du projet) à venir présenter l’équipement d’excellence MANUTECH-USD à la presse et aux autres lauréats du concours au ministère de la recherche. Le montant alloué par le ministère de la recherche à ce projet est de 4,2 M€.
1 December 2010
Reversible and Irreversible Laser Microinscription on Silver-Containing Mesoporous Titania Films
12 October 2010
Article à la une
Investissements d’avenir : Les forces vives de la recherche académique de l’Université de Lyon/Saint-Etienne se mobilisent autour du projet d’Equipement d’Excellence MANUTECH.
Prof. Florent Pigeon (Directeur du laboratoire Hubert Curien) et Philippe Maurin Perrier (Directeur de l’entreprise HEF)
News All news
12 October 2010
TeC-Images
The objective of TeC-Images is to foster research by 3D images, animated or fixed images in social sciences, design, creation and environmental sciences, using the resources of techniques born of visions sciences and ICT. It is also the opportunity for teams from different branches to capitalize on their knowledge to develop innovative and multi-disciplinary research. It also means that scientists join forces with public or private partners to meet the needs of socioeconomic stakeholders.
11 October 2010
Relations industrielles
L’Etablissement de communication et de production audiovisuelle de la défense (ECPAD) a réalisé un reportage, mardi 14 septembre 2010, sur l’ancien site de GIAT industries. Ce tournage présente le « nouveau » site Carnot au travers d’installations collectives favorisant le développement des entreprises du bassin du Sud stéphanois et la création d’emplois.
30 September 2010
AEF : Grand Emprunt
Projet d’ « equipex » Manutech à Saint-Étienne : les partenaires publics et privés envisagent un groupement d’intérêt économique
To be noted
CRYPTOGRAPHIE VISUELLE POUR L’AUTHENTIFICATION DE DOCUMENTS
Résumé des travaux Les présents travaux traitent de cryptographie visuelle au moyen d’images (...)
Deuxièmes journées ‘Tenue des Fibres Optiques en Milieu Radiatif’
Lundi 7 novembre 2011 Session 1 : Introduction 13 h 30 Accueil des participants. 14 h 00 (...)
LABEX
Le nouveau site du laboratoire d’excellence est en ligne !
L’école Polytechnique Fédérale de Lausanne invite V. Fischer pour proposer un cours de "Cryptography engineering"
L’Ecole Polytechnique Fédérale de Lausanne (EPFL) organise régulièrement des écoles d’été qui ont (...)
Femtosecond laser-induced periodic surface structures
Jörn BONSE BAM Federal Institute for Materials Research and Testing Unter den Eichen 87, (...)
Micro- and nanofabrication for optical applications
Micro- and nanofabrication for optical applications Abstract: Some basic concepts of (...)
Soutenance de thèse
Jean BISUTTI, doctorant du laboratoire Hubert CURIEN , soutiendra le vendredi 29 octobre 2010 à (...)
Fête de la science 2010
Venez découvrir les activités du laboratoire Hubert Curien : enseignants chercheurs, ingénieurs, (...)
TELECOM
Telecom Saint Etienne School of Engineering, headed by Laurent Carraro and his main support (...)
Journées ’Tenue des fibres optiques en milieu radiatif’
Le laboratoire Hubert Curien et le CEA, DAM, DIF organisent à Saint-Étienne le 4 et 5 octobre (...)
Post-doc – Optical properties of printed images
Post-doc – Optical properties of printed images ERIS is a research group of the Hubert Curien (...)