Abstract: A method for classifying projection recaptures is disclosed. A copy of a video content is classified as recorded from the digital projection of the video content, or as recorded from the projection of the celluloid film print of the video content by an automated method comprising classifying as a function of at least one feature extracted from a digital representation of the copy, among (i) spatial illumination uniformity; (ii) on-screen vertical stability; and (iii) temporal illumination pulse.

Abstract: The invention relates to a method and a device for detecting the orientation of an image in a set of images. All images in this set of images contain at least one similar object. The method proposes to choose one image in this set of images as being a reference image. The orientation of the other images is detected based on the orientation of this reference image.

Abstract: The invention concerns a device for generating mutual photometric effects and a server for delivering photometric parameters for generating mutual photometric effects and a system including such a device and such a server. The device comprises a receiver for receiving and demultiplexing the visual data sets and photometric parameters respectively associated with the data sets, a module for defining the mutual photometric effects to be generated for these photometric parameters, a compositor and a rendering module for positioning the visual data sets in the common support space and applying the effects defined for the photometric parameters from at least one of the visual data sets to at least one other of the visual data sets so that at least one visual data set influences one other visual data set in the common support space.

Abstract: The invention relates to a method for temporal video registration of a target video with a master video comprising steps of automatic selection a plurality of key frames for target video and a plurality of key frames for master video; sparse registration of a plurality of key frames for target video with a plurality of key frames for master video; dense registration of frames of target video with frames of master video belonging to a temporal segment including registered key frames.

Abstract: The method utilizing a graph-like structure is comprises the following iteration: calculation of the potential of node nm, merging of two nodes ni and nj, as a function of the distances between the attributes of the key images and as a function of the temporal distance of these key images, calculation of the potential of each edge connecting the merged node to another node of the graph previously connected to nodes ni or nj, merging of the two nodes and validation of the new graph if the energy of this graph is less than the energy of the graph before merging.

Abstract: A method for temporal registration of a first sequence of images and a second sequence of second images is described.

Abstract: The method is characterized in that it implements the following steps: random drawing of p candidates from the set of key images, calculation of a cost C for each candidate, selection of the candidate minimizing the cost C, determination of a subset from among the set of key images such that the key images forming the said subset have a distance from the candidate less than a threshold T, determination of a seed from among the key images of the subset such that it minimizes the cost function C for this subset, deletion of the key images of the subset to form a new set of key images for at least one new random draw and determination of a new seed according to the previous 5 steps. The field is that of the selection of shots of interest in a video sequence.

Abstract: The invention relates to a device and a method for segmenting objects in an image. The method comprises steps for: the approximate definition of a contour external to the object to be segmented, said contour including a plurality of so-called control points, the determination of a vicinity of candidate points in the vicinity of each control point, the determination of an energy associated with each candidate point in the vicinity of each control point, the convergence of each of the control points (Vi) towards the candidate point, which minimizes said energy, so providing an estimated contour of the object to be segmented. According to the invention, the energy associated with each candidate point includes a colour discrimination term.

Abstract: The invention relates to a device and a process for detecting faces in a colour image. The process is such that it comprises the steps of: detection of the flesh coloured pixels in the image, segmentation of the image into regions of homogeneous colour, selection, among the regions of homogeneous colour, of the regions comprising a number of flesh coloured pixels greater than a first predetermined threshold, the regions selected being said to be flesh coloured regions. merging of the neighbouring flesh coloured regions until the merge cost attains a second predetermined threshold, the merge cost linearly weighting a merge cost relating to the shape of the regions and a merge cost relating to the colour of the regions, exclusion of false positives.

Abstract: A method for identifying of tokens in a video sequence is described. First, the video sequence is scanned for boundaries between consecutive parts of the sequence where the appearance of the tokens is expected. After that step, candidate regions are pre-selected and classified in parts of the video sequence adjacent to detected boundaries, and tokens are located in the candidate regions. Information carried on the tokens is located, interpreted, and merged into consistent sets of information after passing a confidence analysis. In parallel a change in the visual appearance of a token, signaling a special event, is detected.

Abstract: The invention relates to a method and device for detecting the orientation of an image. The method is such that it comprises the steps of: detecting the lines in the image, calculating, for each line detected, attributes characterizing each line, said attributes classifying each line as being an horizontal or vertical line, characterized in that it comprises the step of detecting the orientation of the image according to the ratio of horizontal lines and vertical lines in the image. Application to the detection of the orientation of photos taken by a digital camera.

Abstract: The invention relates to a method and a device for detecting the orientation of an image in a set of images. According to the invention, the method comprises the steps of: choosing a reference image from among the set of images, detecting the orientation of said image as a function of the orientation of the said reference image. The reference images are images the orientations of which are known a priori.

Abstract: The invention concerns a device and a method for colour correction of an input image.

Abstract: A method is disclosed for measuring similarity between images, comprising the performance of the following steps for each of the images: segmentation of the image into segments, classification of the segments as a function of their orientation to give classes, calculation of a histogram of the number of segments as a function of class, calculation of a histogram of the number of pixels belonging to the segments of one and the same class as a function of class, and comparing, for each image, the histograms calculated above to their respective histograms calculated for each of the rest of the images to give a measurement of similarity.

Abstract: The invention relates to a method for the fragmentation (F) of images (14i) into homogeneous regions (Ri), this fragmentation (F) using iterative merges of fragments Fi and Fj which are as similar as possible according to at least one selection parameter, this similarity being evaluated by a product A*B of two factors A and B, A being consistent with a number of pixels and B being consistent with the selection parameter(s). According to the invention a merge is performed when the product A*B*C is less than a threshold consistent with the selection parameter, C being a factor consistent with the inverse of a number of pixels.

Abstract: The invention relates to a process for access to multimedia elements stored by means of digital data, an image being associated with each element so as to control access to the latter. In accordance with the invention, such a process is characterized in that, when one wishes to access one of these elements, a first group of images associated with first elements is displayed, and means for displaying a second group of images associated with second elements, which group is distinct from the first group of images, is associated with at least one of these displayed images.

Abstract: The invention relates to a device and a method for segmenting objects in an image. The method comprises steps for: the approximate definition of a contour external to the object to be segmented, said contour including a plurality of so-called control points, the determination of a vicinity of candidate points in the vicinity of each control point, the determination of an energy associated with each candidate point in the vicinity of each control point, the convergence of each of the control points (Vi) towards the candidate point, which minimizes said energy, so providing an estimated contour of the object to be segmented. According to the invention, the energy associated with each candidate point includes a colour discrimination term.

Abstract: The method is characterized in that it implements the following steps: random drawing of p candidates from the set of key images, calculation of a cost C for each candidate, selection of the candidate minimizing the cost C, determination of a subset from among the set of key images such that the key images forming the said subset have a distance from the candidate less than a threshold T, determination of a seed from among the key images of the subset such that it minimizes the cost function C for this subset, deletion of the key images of the subset to form a new set of key images for at least one new random draw and determination of a new seed according to the previous 5 steps. The field is that of the selection of shots of interest in a video sequence.

Abstract: The method utilizing a graph-like structure is comprises the following iteration: calculation of the potential of node nm, merging of two nodes ni and nj, as a function of the distances between the attributes of the key images and as a function of the temporal distance of these key images, calculation of the potential of each edge connecting the merged node to another node of the graph previously connected to nodes ni or nj, merging of the two nodes and validation of the new graph if the energy of this graph is less than the energy of the graph before merging.

Abstract: The method performs, for each image, the following steps: segmentation of the image, classification of the segments as a function of their orientation to give classes, calculation of a histogram of the number of segments as a function of class, calculation of a histogram of the number of pixels belonging to the segments of one and the same class as a function of class, comparison of the histograms of each image to give a measurement of similarity.