Abstract: A method for the drainage of permeate gases from a flexible tubular pipe and a pipe embodied for carrying out the method. The pipe comprises at least one inner pressure sleeve, for the transport of hydrocarbons, which contain permeate gases which diffuse across the wall of the inner pressure sleeve. The pipe has an outer sleeve and several reinforcement layers, arranged in an annular zone between the outer sleeve and the inner pressure sleeve. The annular zone has transport ducts in which the permeate gases can circulate towards the removal. The method comprises a forced circulation of the permeate gases in the annular zone through the transport ducts towards the removal.

Abstract: The method of coding a digital image, comprising a step of coding in a format comprising a lower definition layer and at least one higher definition layer further comprises: a step of determining at least one data rate and/or at least one distortion corresponding to a target definition between the lower definition and a higher definition and a step of associating, with the result of the coding step, information representing at least one data rate and/or at least one distortion corresponding to a target definition.

Abstract: A method of dividing a digital signal representing physical quantities, including the step of determining an initial partitioning of the signal, displaying representation of the signal and the previously determined signal partitioning, acquiring at least one partitioning modification parameter, and modifying the partitioning of the signal.

Abstract: The invention concerns a method of dividing a digital signal representing physical quantities, characterised in that it includes the steps of: determining (E1) an initial partitioning of the signal, displaying (E3, E4) a representation of the signal and the previously determined signal partitioning, acquiring (E7) at least one partitioning modification parameter, modifying (E7) the partitioning of the signal.

Abstract: A method of dividing a digital signal representing physical quantities, including the steps of determining an initial partitioning of the signal, displaying a representation of the signal and the previously determined signal partitioning, acquiring at least one partitioning modification parameter, and modifying the partitioning of the signal.

Abstract: A method for accessing a region of an encoded image comprising a plurality of segments that are encoded and put in order of encoding. The method includes the following steps applied to encoded segments and by going through the segments in the opposite direction to their order: comparing the position of the current encoded segment with the region of the image to be accessed, and according to the result of the comparison, deciding as to the decoding of the current encoded segment.

Abstract: The invention concerns a method of adjusting at least one parameter for the compression of data representing physical quantities, the compressed data then being coded according to a coding mode in order to protect it from transmission errors. The methods includes, as from a required compressed data size, determining at least one characteristic of the coding mode, determining an effective size of the compressed data according to the required size and the at least one characteristic, and adjusting at least one compression parameter according to the effective size.

Abstract: A method of encoding a digital image signal comprising a plurality of samples. The method comprises the following steps, applied during the encoding of each sample with a view to its storage in a buffer. The level of occupancy of the buffer is determined, and the level of occupancy is compared with a predetermined threshold. An encoding mode is determined from among a plurality of encoding modes when the level of occupancy is above the predetermined threshold, and encoding the sample according to the determined encoding mode, and the sample is encoded according to a default encoding mode when the level of occupancy is below the predetermined threshold.

Abstract: A method of access by a client computer to a digital image stored on a server computer via a communication network, the digital image being represented by sets of digital data associated respectively with various blocks (Bi) and various resolution levels (Rj) of the image or with various blocks (Bi) and various quality levels (Qk) of the image, comprises a step (E47) of identifying a set of data to be acquired, a step (E48) of calculating the size in bits (b) of the set of data to be acquired, a step (E49) of comparing a number of acquired data bits (B) incremented by the calculated size (b) with a predetermined bit threshold value (S), and a step (E52) of acquiring the set of data identified if the number of data bits acquired incremented by the calculated size (B+b) is less than the predetermined bit threshold value (S). Has particular use for limiting free access to a digital image.

Abstract: A method of transcoding digital data coded according to a first coding mode into digital data coded according to a second coding mode. The method includes detecting the inactivity of resources useful for the transcoding, and transcoding the digital data coded according to the first coding mode into the digital data coded according to the second coding mode, when the inactivity is detected.

Abstract: A method of encoding a set of data representing physical quantities includes the steps of dividing the set of data into subsets, calculating a first encoding cost for each subset using a first encoding mode, calculating a second encoding cost for each subset using a second encoding mode, and selecting an encoding mode per subset as a function of the first and second encoding costs, in which the two encoding costs are calculated according to the same rate-distortion compromise (?), for the image overall.

Abstract: A method of modifying the geometric orientation of a digital image in an image acquisition apparatus adapted to acquire an image in one amongst several different orientations and to store said image in the form of a compressed file, comprises the steps of acquiring an image in a chosen orientation; identifying the chosen orientation; converting said image into a digital image; spectral transformation (E10) of the digital image, determination (E12-E15) of a geometric transformation to be applied to the image acquired as a function of the chosen orientation; application (E16-E18) of the geometric transformation determined to symbols associated with spectral coefficients issuing from the spectral transformation; recording (E20), in the compressed file, two indicators representing a normal or reverse order of the symbols respectively in two directions of the digital image; and coding (E21) of the digital image in the compressed file. Use notably in a digital photographic apparatus.

Abstract: A system for recording information relating to a document, which is accessible via a computer communication network, operates by extracting key words associated with the document, associating a binary code with each extracted key word to form associations, storing the associations in a dictionary, and storing an electronic address (URL) of the document and the binary codes in association with each other in an information storage unit of a user.

Abstract: The invention concerns a method of coding a set of coefficients representing physical quantities. The method includes the step of selecting, for each coefficient to be coded, a first or second coding mode according to a coding cost, the first coding mode including the calculation of an amplitude model, and the determination of a path (P) amongst the coefficients. The method also includes the steps of coding the length of the path, coding the coefficients for which the first coding mode has been selected, by the first coding mode, and coding the coefficients for which the second coding mode has been selected, by the second coding mode.

Abstract: A trellis filtering of a digital signal is disclosed. A method is provided of analysis filtering of an original digital signal including original samples representing physical quantities. Original samples of the digital signal are transformed by successive calculation steps into high and low frequency output samples. Any sample calculated at a given step is calculated by a predetermined function of original samples, and/or previously calculated samples, the samples being ordered in increasing rank. The signal is processed by successive series of samples, the calculations made on any series not taking into account the samples in a following series, and in that the any series terminates in a low-frequency sample.

Abstract: The invention concerns a method of creating a file describing a digital image, comprising the steps of:

Abstract: A method of decoding an encoded digital image, the encoded data of the image comprising a plurality of predefined resolutions, comprises the steps of:

Abstract: A method for the geometric transcoding of a compressed data file containing a digital signal of dimension N coded by means of a coding method including at least one step of spectral breakdown into frequency subbands of the digital signal (S). The method includes the steps of extracting symbols associated with the coefficients of the frequency sub-bands of the digital signal and applying a geometric transformation to the symbols. The method further includes the steps of updating N indicator or indicators representing a normal or reversed order of the symbols respectively in N direction or directions of the digital signal and reconstituting the digital signal coded by reversal of the extracting step.

Abstract: The invention relates to a method of encoding a set of data representing physical quantities, the encoding comprising forming a path between the samples of the set, the path passing a maximum of once via each sample location,

Abstract: A method and a device by which original digital signals are analysis-filtered, where the original digital signals include original samples representing physical quantities, and where the original samples are transformed by successive calculation steps into high and low frequency output samples. Any sample calculated at a given step is calculated by a predetermined function of the original samples and/or previously calculated samples, where the samples are ordered by increasing rank. The signal is processed by successive input blocks of samples, where the calculations made on an input block under consideration take into account only the original or calculated samples belonging to the input block under consideration, and where the input block under consideration and the following input block overlap over a predetermined number of original samples. Output blocks are formed, where each output block corresponds respectively to an input block.