摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A device and a method for measuring visual similarity between two images. One image (Q) being referred to as the model and one image (T) being referred to as the target, the method comprises a prior step (E2) of segmenting the images into regions (Qi, Ti), with each region there being associated at least one attribute (F) representative of at least one characteristic of the region. It furthermore comprises the steps of calculating (E3) the visual similarity between the pairs (Qi, Ti) of possible regions of the two images (Q, T), by taking into account the distance (D(Qi, Ti)) between the said attributes (F) of the regions (Qi, Ti) matched and the areas of the regions (Qi, Ti) matched; selecting (E4) a certain number of pairs (Qi, Ti) of regions whose similarity is greater than a first fixed threshold (ε), calculating (E9) the global similarity between the two images, based on the pairs (Qi, Ti) of regions selected.
摘要:
The invention relates to a device (1) and a method for creating summaries of multimedia documents, the device comprising a storage means and means enabling a user to view a multimedia document. According to the invention, the device comprises means of automatically weighting multimedia documents stored in the storage means according to the frequency with which the different stored documents are viewed by said user, means of creating a summary of the multimedia documents stored on the storage means according to the weighting assigned to each multimedia document.
摘要:
The invention concerns a device and an automatic resetting method using electronic means intended for a geometric model of a scene over a picture of the scene including fixed references, the electronic means comparing the picture with model having been adjusted in perspective by homography for superimposition of the references. According to the invention, the electronic device calculates a fine homography function Hf for resetting into three phases: a first preliminary phase of determination of an average resetting homography consisting in determining an average homography function Hm applicable to the model with average adjustment over a sample of pictures of the scene taken previously, a second, rough resetting phase consisting after application of the average homography function Hm, to the model in determining a rough homography function Hg, and a third, fine resetting phase consisting after application of the rough homography function Hg to the model in determining the fine homography function Hf.
摘要:
The application concerns a method for transmitting video data in a data stream and associated metadata, said metadata representing associated video data structure. The method comprises the steps of—determining the structure of the video data, —splitting said structure into chunks in an incremental manner, —transmitting said chunks in the data stream at time intervals before the video data it is related to. The application concerns also a method for transmitting fingerprint information associated with video data into a video data stream. The method comprises the steps of: —determining fingerprint associated with at least one frame of said video data, —inserting at least a message into the video stream comprising said fingerprint information.
摘要:
The application concerns a method for transmitting video data in a data stream and associated metadata, said metadata representing associated video data structure. The method comprises the steps of—determining the structure of the video data, —splitting said structure into chunks in an incremental manner, —transmitting said chunks in the data stream at time intervals before the video data it is related to. The application concerns also a method for transmitting fingerprint information associated with video data into a video data stream. The method comprises the steps of: —determining fingerprint associated with at least one frame of said video data, —inserting at least a message into the video stream comprising said fingerprint information.
摘要:
The invention relates to a device and a method for recording multimedia data received in programme form. The device comprises temporary storage device designed to continuously record the multimedia data received in programme form and permanent storage device, capable of selectively transferring programmes from the temporary storage device to the permanent storage device.
摘要:
The invention relates to a device (1) and a method for creating summaries of multimedia documents, the device comprising a storage means and means enabling a user to view a multimedia document. According to the invention, the device comprisesmeans of automatically weighting multimedia documents stored in the storage means according to the frequency with which the different stored documents are viewed by said user,means of creating a summary of the multimedia documents stored on the storage means according to the weighting assigned to each multimedia document.