Search results for "couleur"
showing 6 items of 16 documents
Couleurs de la Cité céleste d'Olivier Messiaen
2008
La lente germination de la couleur
2011
International audience
Couleur et transparence à l’ère des procédés photomécaniques
2015
This paper aims to show that the reception of British coloured illustrated books in the early twentieth-century reflects the artistic and aesthetic repositioning induced by the development of photomechanical process. Photomechanical reproduction freed the graphic line as well as colour. Reviews published at the turn of the century—as exemplified by The Studio—reveal a tension between opacity and transparency, materiality and lightness, chromophilia and chromophobia. These oppositions apply to the art of the book—as in the books illustrated by Arthur Rackham and Edmund Dulac—as well as to interior decoration. They are subsumed in the image of the peacock’s ocellus, the eyespot that symbolise…
Simulation d'images d'un futur imageur multispectral géostationaire dédié à la couleur de l'eau : étude de l'influence des angles d'observation et d'…
2011
Improvements of optical sensors now make it possible to launch medium spatial and high spectral resolution sensors on the Geostationary Earth Orbit (GEO). The GEO allows sensors to observe the Earth with high temporal resolution, unlike Low Earth Orbit (LEO) satellites. The objective of this thesis is to simulate radiance images that would be provided by a theoretical ocean color sensor, on a geostationary orbit, in order to characterize the images to be acquired, to specify the future instruments and to validate the image processing algorithms. For this purpose, we have combined a radiative transfer model for ocean waters (Hydrolight) and a radiative transfer model for the atmosphere (MODT…
Spatiocolorimetric neighborhood hypergraph and Image Processing Applications : Noise Removal and Edge Detection.
2004
In this document, we are interested in image modeling by the means of the hypergraph theory. Our contribution is essentially centered on the determination of the properties resulting from this theory and on the analysis from their adequacy with image problems, particularly edge and noise detection.First, we study the image spatiocolorimetric neighborhood hypergraph representation. Three representations are respectively presented incorporating global properties, local properties and similarity functions. Then, we use the hypergraph properties generated by the representation in order to define the structural models of noise and edge. This enables us to deduce the algorithms of noise suppressi…
L'abbé Grégoire, son legs : six concours pour la liberté et l'égalité
2000
Gregoire's last will and testament called for the organization of six awards to be granted on the basis of written competitions on subjects that included reflections upon despotism, slavery, liberties, and equality, the themes of the struggles that had engaged Gregoire. Although the quality of the essays that resulted were not up to the level that the abbot had no doubt hoped for, the competition relative to the means of fighting the prejudice of color was the occasion to open a large debate and to launch the French abolitionist movement.