Abstract:
The invention concerns a process for reconstituting the luminance values of a field (Tj) from the luminance values of the pixels of two known fields (Ta, Tb). It consists essentially in estimating a velocity vector (V) for each pixel (6) of a single field (Ti) corresponding to an instant Ti between Ta and Tb, or being Ta or Tb; determining successively for each pixel (G) of this image (Ti), called the pixel father, the co-ordinate of the centre (Fj) of a pixel to be interpolated (H), called the pixel son, corresponding to the centre (Cj) of the pixel father by a translation of which the vector is a function of the velocity vector (V) of the pixel father multiplied by the time Ti-Tj; associating successively with each pixel to be interpolated (H) a velocity vector constituted by the velocity vector (V) of its pixel father (G); determining in the two known fields (Ta, Tb) the co-ordinates and then the luminance of two points (A, B) corresponding to the centre (Fj) of the pixel to be interpolated (H) by a translation, in the plane of one of the known images (Ta, Tb), of which translation the vector is a function of the velocity vector associated with the pixel to be interpolated multiplied respectively by the durations Tj-Ta and Tb-Tj; determining a luminance valve for the pixel to be interpolated (H) by calculating a linear combination of the luminance values of these two points (A, B). Application to changes in the standard of television images and to the reconstitution of missing images in the low-output transmission of images with the elimination of certain images.
Abstract:
The invention relates to a method for processing a stereoscopic image comprising a first image L and a second image R, an object being embedded on the first and second images modifying the initial video content of pixels associated with the embedded object on the first and second images. In order to ensure coherence between the disparity associated with the embedded object and the video information associated with the pixels of first and second images, the method comprises steps for: detecting (41) the position of the embedded object in the first and second images; estimating (42) the disparity between the first image and the second image on at least part of the first and second images comprising said embedded object; determining the smallest depth value in said at least one part of images comprising the embedded object according to estimated disparity information; assigning a depth to the embedded object for which the value is less than said smallest depth value. The invention also relates to a module for processing a corresponding stereoscopic image.
Abstract:
The invention relates to a method for processing a stereoscopic image comprising a first image L and a second image R, an object being embedded on the first and second images modifying the initial video content of pixels associated with the embedded object on the first and second images. In order to ensure coherence between the disparity associated with the embedded object and the video information associated with the pixels of first and second images, the method comprises steps for: detecting (41) the position of the embedded object in the first and second images; estimating (42) the disparity between the first image and the second image on at least part of the first and second images comprising said embedded object; determining the smallest depth value in said at least one part of images comprising the embedded object according to estimated disparity information; assigning a depth to the embedded object for which the value is less than said smallest depth value. The invention also relates to a module for processing a corresponding stereoscopic image.
Abstract:
The invention proposes a new motion layer extraction method using reference layer mosaics. One motivation is to work with distant images (whose motion in between is more discriminative) while reducing the number of pairs of images to be handled benefiting from the fact that layer mosaics represent the video sequence in a compact way. In this model, not only extracted layer supports for mosaicing are used but also layer mosaics for motion segmentation. In the proposed approach, instead of linking temporally many images pairs from the sequence, the currently processed original image is linked temporally with two sets of motion layer mosaics only. Thus a new image-to-mosaic data term replaces the usual image-to-image motion data term in the objective classification function.
Abstract:
L'invention concerne un accéléromètre micro-usiné utilisant une masse sismique mobile (10) suspendue par rapport au substrat par des liaisons élastiques (12, 14) autorisant seulement une translation dans son propre plan selon un axe sensible (Oy); la masse agit sur au moins un résonateur allongé (20), par l'intermédiaire d'une structure d'amplification d'effort associée à ce résonateur; la structure d'amplification comporte un bras de levier rigide (30) dont une première extrémité (32) est reliée à la masse sismique par une liaison (36) ayant, dans le plan de la masse, une forte raideur dans la direction de l'axe sensible (Oy) et une faible raideur dans le sens perpendiculaire, et une deuxième extrémité é (34) est reliée à un point (A6) d'ancrage sur le substrat. La deuxième extrémité (32) du bras de levier est une pièce de tête rigide entourant le point d'ancrage (A6) et reliée à ce point d'ancrage par une liaison en rotation (38, 40) autour d'un centre de rotation (M); le résonateur a une extrémité fixée à la pièce de tête rigide en un point (B) tel que l'axe longitudinal du résonateur passe à une distance h, faible par rapport à la longueur L du bras de levier mais non nulle, du centre de rotation (M) de la liaison en rotation.
Abstract:
The present patent application concerns new compounds of formula (I): displaying agonistic activity at sphingosine-1-phosphate (S1P) receptors, their process of preparation and their use as immunosuppressive agents.
Abstract:
Le microcommutateur comporte une membrane déformable (12) comprenant deux branches de flexion (13), sensiblement parallèles, fixées à un substrat par au moins une extrémité et comportant des moyens d’actionnement thermique (4). Une branche de contact (14) allongée, sensiblement parallèle aux branches de flexion (13), est disposée entre les branches de flexion (13) et fixée à celles-ci au niveau de leurs zones de forte déformation. La branche de contact (14) se déplace sensiblement parallélement au substrat lors de l’actionnement du microcommutateur et comporte des électrodes (15) de maintien électrostatique et un plot conducteur (6).
Abstract:
The invention relates to a device for capturing audio/video data representative of an event, said device comprising means of adding metadata to the captured data. According to the invention, the means of adding metadata associate a predefined metadata item with a type of event. Application to sport-type events.
Abstract:
Le procédé réalise un filtrage temporel compensé en mouvement (MCTF), le filtrage temporel étant remplacé par un codage en mode intra pour obtenir au moins une image de fréquence basse (L) ou haute (H) si l'image courante a un niveau de corrélation avec une image précédente inférieur à un seuil, les images obtenues de fréquence basse (L) étant alors mises à l'échelle pour être adaptées, au niveau énergétique, aux images obtenues par filtrage temporel compensé en mouvement, et est caractérisé en ce que, en fin d'analyse : - il sélectionne les images obtenues par un codage intra d'une image du niveau de décomposition inférieur avec la condition supplémentaire, pour les images haute fréquence, que cette image provient elle-même d'un codage intra. - il calibre l'image sélectionnée en effectuant au moins une étape inverse de l'étape de mise à l'échelle. Les applications concernent la compression vidéo avec prédiction temporelle.
Abstract:
The invention concerns a method which consists in successively depositing a polymeric sacrificial layer (2), depositing, on at least part of the substrate (1) and the front surface of the sacrificial layer (2), an embedding layer (6), with a thickness greater than that of the sacrificial layer (2) and performing planarization such that the front surfaces of the sacrificial layer (2) and of the embedding layer (6) form a common planar surface. A forming layer (3) of a suspended structure (5) is deposited on the front face of the common planar surface. The planarization can include chemical mechanical polishing and etching the embedding layer (6). Etching the sacrificial layer (2) can be performed by means of a mask, formed on the front surface of a polymer material layer, removed during the planarization step.