Abstract: The invention relates to a polyelectrolyte-based nanostructured anticorrosion coating, comprising at least one main compartment which comprises: a polyelectrolyte multilayer (1) doped with at least one anticorrosion agent (4), and an upper multilayer (2a) acting as a barrier to the diffusion of the dopants, and whose upper surface corresponds to the upper surface of the main compartment, and optionally one or more secondary compartments, each comprising: a polyelectrolyte multilayer (8; 11) doped with at least one functional agent other than an anticorrosion agent, and an upper multilayer (2b; 2c) acting as a barrier to the diffusion of the dopants, and whose upper surface corresponds to the upper surface of the secondary compartment. The invention also relates to a structure comprising a metallic substrate and such a coating, and also to its use in the aeronautical or aerospace field and to the process for preparing it.

Abstract: A method of searching for a scene based on a stream of images archived in a video surveillance database including: a first phase of preprocessing prior to archiving of the images including extracting generic information from the images of the stream, systematically annotating the scenes of the images by at least one indication defined as a function of the generic information, and indexing the scenes of the images based on information extracted from the indications originating from one or more streams; a second phase of investigation by preselecting video segments from the stream of images including the annotation indications associated with the images; and a third phase of searching for a particular scene based on at least one additional characteristic not forming part of the annotations associated with the preselected video segments.

Abstract: The invention relates to a structure comprising: at least one mesostructured layer, prepared by a sol/gel method from at least one specific metallic molecular precursor in the presence of a specific texturing agent and a metal substrate. The invention further relates to the method for production and use thereof in aeronautics and aerospace.

Abstract: The present invention relates to a structure comprising: at least one mesostructured layer prepared by the sol-gel route from at least one specific molecular metallic precursor in the presence of an amphiphilic surfactant, and a metal substrate. It also relates to its process of preparation and to its use in the aeronautical or aerospace field.

Abstract: The present invention relates to the use of a nanostructured material, as a protective coating for metallic surfaces, said nanostructured material comprising functionalized nano-building blocks and a polymer or hybrid organic/inorganic matrix. It also relates to a particular nanostructured material in which the matrix is prepared from at least three silicon alkoxides.

Abstract: The invention relates to a corrosion-resistant thin-film multilayer structure having a low wear rate and a low coefficient of friction, comprising 1 to 1000 periods, one period comprising 2 to 100 layers (A, B) based on carbon, silicon and hydrogen, and optionally a functional surface layer (FSL). The invention also relates to a component comprising the thin-film multilayer structure and to its method of deposition.