Abstract: A method for determining a rate of sedimentation or of creaming of a mixture in suspension, including an application of a sample of the mixture in suspension to a photonic microresonator, an application of a first optical signal at the input of the photonic microresonator carrying the sample of the mixture in suspension, an acquisition and a recording of a second optical signal, delivered at the output of the microresonator carrying the sample of the mixture in suspension, and a determination of information representing a rate of sedimentation or of creaming of the mixture from the recorded second signal, by successive iterations of spectral analysis of the second optical signal.

Abstract: The principles disclose a method enabling a video zooming feature while playing back or capturing a video signal on a device (100). A typical example of device implementing the method is a handheld device such as a tablet or a smartphone. When the zooming feature is activated, the user double taps to indicate the area on which he wants to zoom in. This action launches the following actions: first, a search window (420) is defined around the position of the user tap, then human faces are detected in this search window, the face (430) nearest to the tap position is selected, a body window (440) and a viewing window (450) are determined according to the selected face and some parameters. The viewing window (450) is scaled so that it is only showing a partial area of the video. The body window (440) tracking (BW) will be tracked in the video stream and motions of this area within the video will be applied to the viewing window (450), so that it stays focused on the previously selected person of interest.

Abstract: The invention relates to a device for coding video data comprising means to code a video stream as groups of pictures, each group of pictures comprising at least one description unit relevant to the coding of the said group of pictures. According to the invention, the coding device comprises means to insert in the stream of data at least one message indicating whether the description unit of the current group of pictures is identical to the description unit relevant to the preceding group of pictures. The invention also relates to a device for decoding video data comprising means to decode a stream of data coded with a device according to one of the preceding claims. According to the invention, the decoding device comprises means to analyze the said messages, means to decode the at least one next description unit if the said message indicates that this unit is different from the preceding description unit, otherwise, if it is identical, not to decode it.

Abstract: The invention relates to a device for coding video data comprising means to code a video stream as groups of pictures, each group of pictures comprising at least one description unit relevant to the coding of the said group of pictures. According to the invention, the coding device comprises means to insert in the stream of data at least one message indicating whether the description unit of the current group of pictures is identical to the description unit relevant to the preceding group of pictures. The invention also relates to a device for decoding video data comprising means to decode a stream of data coded with a device according to one of the preceding claims. According to the invention, the decoding device comprises means to analyse the said messages, means to decode the at least one next description unit if the said message indicates that this unit is different from the preceding description unit, otherwise, if it is identical, not to decode it.

Abstract: The invention relates to a method and a device for coding video data comprising means for coding the pictures in data groups. According to the invention, the device comprises means for inserting, into the coded data groups, a message comprising parameters originating from the coding of the said group and allowing, during a subsequent decoding, a reconstruction of the said data in the event of error during the coding or during the decoding.

Abstract: The invention relates to a device and a method for coding video data. The device comprising means for coding each picture in slices of pictures, each slice being coded independently of the other slices. According to the invention, the device comprises means for inserting into the data stream at least one message indicating the structure relating to the breakdown of the pictures into slices. The invention also relates to a system for decoding and a method for decoding video data, the said video data having been coded in slices, each of the slices being coded independently of the other slices. According to the invention, the coding system comprises means for analysing the video data in order to ascertain the breakdown of the data into slices, means for decoding the video data slice by slice, means for reconstructing the various video data after they have been decoded in order to reconstruct the decoded video data.