Abstract: A database stores a number N of biometric data representatives which correspond to a set of characteristics of said biometric data. Acquired biometric data is obtained. Then, transformed biometric data is obtained by transforming the acquired biometric data according to said set of characteristics. Next, N deviation values are obtained by applying a comparison between the transformed biometric data and the N representatives in the database. Finally, a vector representing the acquired biometric data is obtained, the representation vector having a number of components less than or equal to N, said components being determined in relation to said N deviation values.

Abstract: A method of managing file identifiers in a portable data medium having an integrated circuit by means of a table of identifiers associating a given reference with each of the identifiers of a given file. A portable data medium including an integrated circuit arranged for performing the method.

Abstract: The present invention concerns a method and device for detecting the orientation of an area (DO) of the body of an individual placed on an apposition area (AP) of a biometric sensor mounting (P) designed to form a first image (I1) of the area (DO) of the body by total reflection of radiation on the apposition area (AP), and a second image (I2) of the area (DO) of the body from radiation able to pass through the tissues of the body and to be reflected on haemoglobin. The method is characterized in that it comprises a step of determining in a reference frame firstly the longitudinal axis (A) of the area of the body depicted in the first image and secondly two longitudinal edges (B1, B2) of the area of the body depicted in the second image, and a step of determining the orientation of the area of the body with respect to the mounting from the measurement of the relative positions of the two edges (B1, B2) and the axis (A) thus determined in the reference frame.

Abstract: The invention relates to a method and system for managing and checking different identity data relating to a person. According to the invention, a derived-identity management server generates for the person at least part of the identity data with which said person can be authenticated in relation to a service provider for the derived-identity domain, on the basis of information derived from identity data from parent domains. The identity data generation processing ensures that no link can be established from two authentications in two separate domains in the absence of link information. If necessary, said link information is transmitted by a parent domain to a derived-identity server so that the latter establishes the link between the identity data of the derived-identity domain and the identity data of the parent domain, e.g. for the cascade revocation of a person from various domains.

Abstract: This disclosure relates to methods for identifying an antibody, a target molecule, or an agent by analyzing the immunoglobulin repertoire sequence data in a sample and by determining the most dominant VH and VL chains present in said sample, as well as materials used therewith.

Abstract: A method of performing a security inspection of a container including a plurality of objects includes irradiating the container with polychromatic x-rays, reconstructing a 4-D voxelized representation defining a momentum transfer spectrum, and generating a 3-D image by determining a single value at each voxel as a function of the momentum transfer spectrum. The method further includes segmenting the voxels into segments of contiguous voxels that map onto at least one object. The method also includes computing an aggregated momentum transfer spectrum over at least a portion of the contiguous voxels through at least one of aggregating the spectra of the contiguous voxels for each segment and defining a supervoxel that includes voxels with the object exclusively and voxels in a neighborhood, regardless of association with the object. The method further includes classifying the object as one of a threat and a non-threat based on the aggregated momentum transfer spectrum.

Abstract: The present disclosure can obtain a high-quality composite image by determining a suitable boundary when input images are sequentially stitched together to generate the composite image. An image generating apparatus 1 generates a composite image by stitching sequentially input images together. A difference value calculating section 15 calculates difference values by using the pixel values of a reference image and the pixel values of a target image that partly overlap the reference image. The difference values represent the relative relationship between the reference image and the target image. A boundary determining section 16 determines a boundary for stitching the reference image and the target image together by using the difference values calculated by the difference value calculating section 15. Then, an image compositing section 18 generates the composite image by stitching the reference image and the target image together based on the boundary determined by the boundary determining section 16.

Abstract: The invention relates to a method for masking the end-of-life transition of an electronic microprocessor device comprising a reprogrammable non-volatile memory containing an end-of-life state variable (FdVE). The value of the variable (FdVE) is loaded (A) into random access memory. Prior to the execution of any current command (COM), the value of the variable (FdVR) in random access memory is checked (B). The end-of-life transition is executed (C) in the event of an empty value. Otherwise, the initialization or the execution of the command (COM) is continued (D). Upon detection (E) of an intrusive attack, the end-of-life state variable (FdVR) is written (F) in the single random-access memory, and the end-of-life state variable (FdVE) is deleted (G) from the non-volatile memory in a delayed manner. The invention is suitable for all electronic devices, microprocessor cards or the like.

Abstract: A decision device for deciding whether an eye having a macula and an optical axis is real or false includes: lighting means emitting an infrared flux towards the eye along an entry axis; an infrared capture means for capturing an image of the eye along an exit axis, the entry and exit axes being aligned with the optical axis so that the macula illuminated by the lighting means under the incidence of the entry axis is seen by the capture means; processing means for detecting, on an image captured by the capture means, whether a peripheral zone representing the iris exists and whether a central zone in the peripheral zone, the colour of which is representative of the macula existence, exists, and for delivering information representing this detection; and decision means for deciding whether the eye is real or false according to the information delivered by the processing means.

Abstract: The tracking method comprises, for at least a first image of the text having at least a first line of characters: applying a prediction of a movement to which the text is subjected between the first image and a second image of the video stream, the movement prediction being applied to at least one second line of characters of the second image; determining at least one alignment hypothesis for aligning the first line with the second line after applying the movement prediction; estimating for each alignment hypothesis, a geometrical transformation between the first line and the second line resulting in that alignment; and evaluating a character match metric for each alignment hypothesis, the metric being evaluated from signatures calculated on the characters of at least one line of the first image and signatures calculated on the characters of at least one line of the second image put into correspondence with the characters of said at least one line of the first image after applying the geometrical transform

Abstract: A particle impact device for a hand-held trace particle detection system includes an intake manifold that includes a first conduit defining an intake port. The intake port defines a first transport area. The intake manifold also includes a second conduit coupled to the first conduit. The second conduit defines a discharge port that defines a second transport area. The first transport area is greater than the second transport area. The particle impact device also includes a combined deposition and deflection apparatus positioned downstream of the discharge port. The combined deposition and deflection apparatus defines a deposition and deflection surface positioned a predetermined distance from the discharge port. The deposition and deflection surface is configured to deflect a fluid stream and collect at least a portion of particles entrained in the fluid stream.

Abstract: A server-implemented method encrypting at least two pieces of indexed data as lists of elements, each element belonging to a finite set of indexed symbols on an alphabet. The data is encrypted to form a protected set, including: the server randomly generates, for each datum, a corresponding encoding function; if at least one element that constitutes a datum is the symbol of the alphabet, the server determines the image of the symbol of the alphabet via the encoding function corresponding to the datum to obtain a codeword coordinate and adds the codeword coordinate to an indexed set corresponding to the element of the alphabet; then the server completes the indexed set with error-inducing points; the server randomly reindexes the elements of the indexed set corresponding to the symbol of the alphabet; and the server adds the indexed set to the protected set. The method can identify an individual.

Abstract: It is an object to generate a desired composite image in which a motion area of a subject is correctly composited. A difference image between a base target and an aligned swap target is generated (S1021), and an extracted contour in the difference image is determined according to the active contour model (S1022). The inner area of the contour and the outer area of the contour are painted with different colors to be color-coded so as to generate a mask image for alpha blending (S1023). Using the mask image thus generated, the swap target that is aligned with respect to the base target is composited with the base target of the base image by alpha blending (S1024).

Abstract: A method and apparatus for partially up/downscaling an image encoded on a macroblock basis. The method and apparatus performs operations of: storing the encoded image; creating map data from bitstream of the encoded image to decode at a least one macroblock of the encoded image, creating a shrunken image of a predetermined size based on resolution of a display device, storing the map data and the shrunken image so as to relate with the encoded image; outputting the shrunken image related with the encoded image to be displayed based on a control request received from an input device; determining at least one macroblock to be decoded based on a display area of the shrunken image; partially decoding the encoded image for the determined macroblock using the map data; and outputting to the display device, the image data of the display area of the partially decoded image.

Abstract: The invention relates to a secure method of processing data in which method is implemented the evaluation of a function that may be written as a linear combination of sub-functions with two binary inputs, in which a client and a server each possess a binary code, comprising n indexed bits, the method comprising the evaluation of the function with the binary codes of the client and of the server as inputs, without one of the client or the server obtaining information about the code of the other, the method being characterized in that it comprises the following steps: —the server randomly generates n indexed values and calculates the linear combination of these values with the same linear combination as that applied to the sub-functions to obtain the function, —the client implements, for each bit of his binary code, a technique of unconscious transfer to obtain from the server an intermediate data item comprising the randomly generated value of same index as the bit of the code of the client, increased by the v

Abstract: Detecting a true face includes: capturing a parallel image of a face captured by a camera having a filter polarizing parallel to a polarization direction and an orthogonal image of the face captured by a camera's filter polarizing orthogonally to the polarization direction; computing a difference image from difference between the parallel and orthogonal images; filtering the difference image in wavelet packets on 5 levels, eliminating “low” resolution levels; dividing the filtered image into sub-images; the filtered image and each sub-image undergoes: a Fourier or discreet cosine transformation; and modelling during which the frequency decrease profile is modelled by a model of the power type (a.

Abstract: A method for segmenting fingers may include: a capture step during which the acquisition device captures an image of the fingers and of the sight; a computing step during which the processing unit computes the unrolled phase image from the image of the thus captured; a derivation step during which, for each pixel of the phase image thus computed, the processing unit computes the derivative of the phase along the isointensity axis of the sight; a regionalisation step during which the processing unit associates each pixel where the derivative of the phase has been computed with a region grouping all the adjoining pixels step by step where the derivative of the phase has the same polarity; and a recognition step during which the location of each finger is recognised from the analysis of the regions thus determined.

Abstract: The present disclosure is directed to methods and systems for creating a gas curtain inlet for a detector of a substance of interest. The methods and systems include introducing a carrier gas into an inlet to block out atmospheric air without having to make the inlet a sealed system.

Abstract: The invention concerns an antifraud device (100) for validating the use of a real part of a body as an imprint-bearing substrate (150) and comprising: a control unit (106), a sensor (102) intended to capture the image of an imprint carried by the substrate (150) placed on said sensor (102), a movement module (104) on which said sensor (102) is mounted and which is intended to move said sensor (102), an analysis module (108) intended to receive the data representing an image of an imprint captured before the movement of said sensor (102) and an image of an imprint (200) captured after the movement of said sensor (102) and to analyze them, and a decision-making module (110) intended to make a decision as to whether or not the substrate (150) is a real part of a body, from information transmitted by the analysis module (108).

Abstract: A device for capturing an image representing a print of a part of the body of a person, the capture device may include: a base layer; a reference electrode covering the base layer; electronic capsules fixed in the form of a matrix on the reference electrode, each electronic capsule consisting of a microcapsule filled with a liquid medium and particles with two different colors and opposite electrical charges; a support plate covering the electronic capsules and serving as a support for said part; a camera intended to take an image of the electronic capsules; and an active electrode intended to come into contact with said part and electrically connected to a voltage source delivering a non-zero electrical voltage.