Institution
University of the Littoral Opal Coast
Education•Dunkirk, France•
About: University of the Littoral Opal Coast is a education organization based out in Dunkirk, France. It is known for research contribution in the topics: Catalysis & Dielectric. The organization has 1242 authors who have published 2383 publications receiving 46230 citations. The organization is also known as: ULCO.
Topics: Catalysis, Dielectric, Liquid crystal, Laser, Population
Papers published on a yearly basis
Papers
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TL;DR: This paper presents a novel system counting people in a crowd scene with overlapping cameras that fuses all single view foreground information to localize each person present on the scene and suggests a region-based approach tracking strategy which keeps track of people movements and of their identities along time.
Abstract: Real-time estimates of a crowd size is a central task in civilian surveillance. In this paper we present a novel system counting people in a crowd scene with overlapping cameras. This system fuses all single view foreground information to localize each person present on the scene. The purpose of our fusion strategy is to use the foreground pixels of each single views to improve real-time objects association between each camera of the network. The foreground pixels are obtained by using an algorithm based on codebook. In this work, we aggregate the resulting silhouettes over cameras network, and compute a planar homography projection of each camera's visual hull into ground plane. The visual hull is obtained by finding the convex hull of the foreground pixels. After the projection into the ground plane, we fuse the obtained polygons by using the geometric properties of the scene and on the quality of each camera detection. We also suggest a region-based approach tracking strategy which keeps track of people movements and of their identities along time, also enabling tolerance to occasional misdetections. This tracking strategy is implemented on the result of the views fusion and allows to estimate the crowd size dependently on each frame. Assessment of experiments using public datasets proposed for the evaluation of counting people system demonstrates the performance of our fusion approach. These results prove that the fusion strategy can run in real-time and is efficient for making data association. We also prove that the combination of our fusion approach and the proposed tracking improve the people counting.
16 citations
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TL;DR: The performances of different 5Cu/CoxMg6-xAl2 catalysts prepared by the wet impregnation method were investigated in the ethanol steam-reforming reaction (ESR) during 4 h under a steam/ethanol ratio of 3 (S/E = 3).
Abstract: The performances of different 5Cu/CoxMg6-xAl2 (x = 0; 2; 4; 6) catalysts prepared by the wet impregnation method were investigated in the ethanol steam-reforming reaction (ESR) at 450 °C during 4 h under a steam/ethanol ratio of 3 (S/E = 3). The best catalyst among the prepared solids was 5Cu/Co6Al2 as it showed a complete ethanol conversion and the highest hydrogen and carbon dioxide productivities. However, following 50 h of aging, the catalyst deactivated due to the formation of a high amount of carbonaceous products detected by differential scanning calorimetry/thermogravimetry. On the other hand, the 5Cu/Co2Mg4Al2 catalyst showed a much lower quantity of coke deposition with no deactivation due to the basic character conferred by the magnesium oxide phase.
16 citations
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TL;DR: It is suggested that, in this region, late spawned cohorts contribute less to the recruitment of the adult population and high growth rates and condition of individuals from the summer cohort may have conferred them ecological advantages and enhanced their survival.
16 citations
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TL;DR: The expression levels of some basal defence-related genes were investigated during a compatible interaction in order to evaluate wheat reactions to infection, along with the different stages of the infectious process in planta.
16 citations
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TL;DR: In this paper, the structure and reactivity of cycloimmonium ylides have been reported by calculations on ylide bond lengths, bond orders, dipolar moments and rotational barriers.
16 citations
Authors
Showing all 1273 results
Name | H-index | Papers | Citations |
---|---|---|---|
Tong Wu | 66 | 591 | 19325 |
Bernard Coq | 50 | 148 | 7111 |
Antoine Aboukaïs | 43 | 218 | 6290 |
Karine Anselme | 43 | 139 | 9671 |
Edward J. Anthony | 43 | 215 | 5659 |
Pierre Collet | 41 | 322 | 7871 |
Jean-François Lamonier | 41 | 141 | 4625 |
Serge Berthoin | 41 | 140 | 6291 |
Jean Demaison | 39 | 409 | 6858 |
Guillaume Garçon | 39 | 102 | 3692 |
Pierre Hardouin | 38 | 93 | 6145 |
Sami Souissi | 38 | 197 | 8837 |
John C. Wenger | 37 | 112 | 6644 |
François G. Schmitt | 37 | 189 | 4953 |
Pirouz Shirali | 37 | 86 | 3253 |