Abstract: Device for analyzing streaming audio-video data, characterized in that it comprises a selector (20) designed to determine input data relating to an audio stream or to a video stream in the streaming audio-video data, a converter (22) designed to produce image data at a frequency chosen on the basis of the input data, an encoder (24) designed to produce compressed data on the basis of the image data, and a projector (26) designed to produce imprint data on the basis of the compressed data, the converter (22) being designed to produce the image data in the form of an image of fixed dimension, the encoder (24) being designed to work successively on each image described by the image data, and the projector (26) being designed to produce the imprint data as a stream on the basis of the weight of the compressed data produced successively.

Abstract: A method for generating representations of visual characteristics of images is presented. The method includes receiving search criteria. The criteria include images to be searched, query images and expected result sets, and a retrieval metric. The method identifies objects within each image and selectively generates a representation of visual characteristics of each image using descriptors from an inventory of descriptors in accordance with the retrieval metric. The method compares the representations of the query image to representations of the images to be searched and determines a search result. The search result is compared to the expected result. If the results do not match, the generating, comparing and determining steps are re-executed with reselected descriptors based on the search result and the retrieval metric. The re-execution continues in a trial-and-error approach until acceptable search results are achieved. When achieved, the method encodes the process for generating the representations.

Abstract: The present invention pertains to a method and a system for identifying a specific image within a flow of images. The system calculates a reference index of the specific image, and current indexes of the current images of said flow. The index has the form of an ordered and finite set of values encoding the content of the current image. The system also compares the reference index with the current index of the current image of the monitored flow. It is thus possible to detect a specific image within a flow with great precision and extremely fast while being robust during major photometric alterations.

Abstract: The present invention pertains to a method and a system for identifying a specific image within a flow of images. The system calculates a reference index of the specific image, and current indexes of the current images of said flow. The index has the form of an ordered and finite set of values encoding the content of the current image. The system also compares the reference index with the current index of the current image of the monitored flow. It is thus possible to detect a specific image within a flow with great precision and extremely fast while being robust during major photometric alterations.

Abstract: A process for presenting information in a multimedia file from a query implemented by a user on an open computer network including a multiplicity of computer terminals enabling transmission of graphical data displayed in multimedia files, the process including selecting at least one image comprising an object to be retrieved, adaptively analyzing a global image to isolate a zone of interest comprising a graphical element which is an object of a query and calculating a set of visual signatures for each object, comparing visual signatures of extracted objects and images contained in the multimedia files to find similar objects stored in the multimedia files, and constructing a file including a set of responses resulting from the comparison.