Abstract: A method for analyzing time series data to identify an event of interest is provided. The method includes receiving, at a computing device, time series data that includes the event of interest, identifying, using the computing device, a start time of the event of interest and an end time of the event of interest by modeling at least one transitional pattern in the time series data, and categorizing, using the computing device, the event of interest based on the at least one transitional pattern.

Abstract: The invention relates to a method and a device (1) for authenticating information contained in a document (6), said device including at least one imager configured for acquiring at least one image of an acquisition field, at least one light source, computer processing means configured for processing the image and for extracting therefrom data relating to the document, said device being adapted so as to be mounted on the head of a user (10) so that its acquisition field (11) covers at least one portion of the field of vision (12) of the user (10), the light source being configured so as to emit in the acquisition field (11) of the imager, a light of at least one non-visible wavelength, the imager being adapted for allowing acquisitions at said wavelength and thus allowing acquisition at this wavelength of an image of a document (6) presented to the user (10) in the acquisition field of the imager. The invention also relates to the corresponding method.

Abstract: Disclosed is a checking device that is intended to check the authenticity of a fingerprint of a finger and which includes, among other things, a capture system for capturing an image of the finger and of the fingerprint, and acquisition means for acquiring a three-dimensional model of the finger. The checking device also includes means for determining the core on the image of the fingerprint, for locating the crown of the three-dimensional model, for determining the orientation and position of the end of the finger and for determining the relative positions of the end, the crown and the core. From these elements, the checking device can decide whether the fingerprint is real or false.

Abstract: The invention relates to a method, for determining a distance between an object with respect to an imaging system, improving the reconstruction of images of objects imaged by an imaging system and improving the resolution of the images obtained.

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: An identity document includes in a single plane a two-dimensional image and under optical elements a ghost image for verifying the authenticity of the two-dimensional image. The ghost image is a stereo image and the stereo image is based on the two-dimensional image. The stereo image includes at least two images of the person on the identity card wherein at least one of the two images is a calculated image. The stereo image may further include a floating image, the floating image being arranged to be perceived to float over the ghost image.

Abstract: An identification assembly for an identity document (10) includes a substrate (12) with a substantially planar configuration, and an adjacent surface (13, 14) hingeably attached to the substrate (12) and provided adjacent to the substrate (12). The substrate (12) includes at least two image areas (18, 20), a first image area (18) having a first image (19), and wherein the substrate includes a second image area (20) including a second laser produced image (21), and a third image (22) corresponding to the second image (21) is provided through the second image area (20) onto the adjacent surface (13, 14), the third image (22) being visible for a user by hinging the substrate away from the adjacent surface (14).

Abstract: Provided is a method/system for taking, by an imaging device, one or more images of an object or a part of an object presented at a distance in front of the imaging device, the object being illuminated by a lighting system. The method/system may include: estimating a 3D model of the object as it will be at a predetermined time when taking the image by the imaging device; simulating, using the estimated 3D model, the illumination of the object as it will be at said time to obtain estimated images of the object in respectively a plurality of envisaged lighting modes of the lighting system; selecting a lighting mode of the lighting system from the estimated images; and controlling the lighting system to be in the selected lighting mode; and controlling the imaging device, at the time of the taking of the image of the object, to effect the taking.

Abstract: An embedded system and, in particular, a communication protocol suitable for a data transmission using auxiliary physical channels of such an embedded system. A transmission method suitable for such a channel includes the transmission of a data signal based on the encoding of three symbols. The message consists of a preamble allowing recognition of the symbols used, followed by the significant part of the message. The decoding of the message comprises a first step of learning the symbols used, prior to the decoding of the significant part of the message.

Abstract: A biometric identification method comprising the steps of comparing a candidate print with a reference print and validating identification as a function of a number of characteristics that are common in the two prints and of a predetermined validation threshold, the method being characterized in that it comprises the steps of altering the biometric characteristics of one of the two prints prior to comparison and of taking the alteration into account during validation.

Abstract: A system for implementing an electrical rotary joint in a large-diameter system using relatively small-diameter capsule slip rings is described herein. The system includes a system rotor that rotates about a system axis of rotation, and a system stator that is stationary with respect to the system rotor. The system also includes at least one conductive contact channel disposed on one of the system rotor and the system stator. The system further includes at least one capsule slip ring (CSR) coupled to the other of the system rotor and the system stator. The at least one CSR has a conductive annular element coupled thereto, the conductive annular element in mechanical contact with the at least one conductive contact channel such that the at least one CSR forms an electrical rotary joint between the system rotor and the system stator.

Abstract: The invention concerns a size marker for electrophoresis, characterized in that it contains several pairs of molecules the sizes of which are selected to allow the generation of a succession of double-peaks in one same electropherogram, said double-peaks being spaced apart two by two by a distance greater than the distance separating the two peaks of a double-peak. The invention also concerns a method for controlling the resolution of an electropherogram produced with a said marker.

Abstract: Disclosed is a method intended to validate that an element is covered with a true skin and implemented by a validation device including a light source at at least one wavelength, a sensor, an analysis module and a decision-taking module. The method may include: placing a surface of the element in front of the light source and the sensor; illuminating, by the light source, the surface of the element; capturing, by the sensor, for each wavelength, an image of the positioned element that encompasses an illuminated zone of the element directly illuminated by the light beam and a peripheral zone (“the diffusion zone of the element,” which is peripheral to the illuminated zone); analyzing the illuminated zone and the diffusion zone of the captured image; and deciding, by the decision-taking module, whether the element is covered with a true skin according to the results of the analysis.

Abstract: The invention relates to a data-processing method that includes encoding a plurality of data of n bits into code words having a predefined constant Hamming weight, characterized in that said method also includes using (4000) encryption operations or arithmetic operations on the resulting code word(s) and also in that encoding each datum includes: decomposing (100) the datum into a plurality of m bit sequences to be encoded, m strictly being less than n; encoding (300) each bit sequence into a partial code word, each having a predefined Hamming weight, such that the sum of the Hamming weights of the partial code words are equal to the Hamming weights of the code word; and concatenating (300) the partial code words such as to produce the code word corresponding to the datum. The invention also relates to a data transmission method and to an electronic circuit configured to implement said methods.

Abstract: The present invention relates to identification method of an entity executed by an identification system from indexed distance data (d1, . . . , dn) corresponding to reference entities and comprising: a determination phase of a set (I) of indices of minima (index1, . . .

Abstract: A cryptographic calculation includes obtaining a point P(X,Y) from a parameter t on an elliptical curve Y2=f(X) and from polynomials satisfying: ?f(X1(t))·f(X2(t))=U(t)2 in the finite body Fq, irrespective of the parameter t, q=3 mod 4. A value of the parameter t is obtained and the point P is determined by: (i) calculating X1=X1 (t), X2=X2(t) and U=U(t); (ii) testing whether the term f(X?1) is a squared term in the finite body Fq and, if so, calculating the square root of the term f(X1), the point P having X1 as abscissa and Y1, the square root of the term f(X1), as ordinate; (iii) otherwise, calculating the square root of the term f(X2), the point P having X2, as abscissa and Y2, the square root of the term f(X2), as ordinate. The point P is useful in encryption, scrambling, signature, authentication or identification cryptographic applications.

Abstract: The invention relates to a method for signing a message (m), implemented by processing means of a user device of a member (Mi) belonging to a group of members (G), said user device having a secret signature key (ski), said method including a step of generating (E301) a group signature (?) for the message (m), enabling said member (Mi) to prove his membership in the group (G), and a step of generating (E302) a pseudonym (nymij) identifying the member (Mi) within a domain (Dj) of a service provider (SPj), said domain including a set of terminals in communication with a server of said service provider, said signature (?) being designed such that said member (Mi) can prove, by signing the message (m), his knowledge of said secret signature key without disclosing it, said group signature (?) being designed such that the membership of the member (Mi) in the group is verifiable independently from the pseudonym (nymij), said pseudonym and said signature being a function of a portion (xi) of said secret signature k

Abstract: The invention relates to a method of signature with pseudonym ? of a message m by a user device storing a secret signature key sk dependent at least on a first part of key f, on a second part of key x and on a third part of key A equal to (g1hf)1/(x+y) and comprising the following steps: —generation of a pseudonym nym equal to hf dpkx, with dpk a public domain parameter, —determination of random numbers a, r_a, r_f, r_x, r_b, r_d, —calculation of signature coefficients R1 equal to hr_Jdpkr_x, R2 equal to nymr_ah?r_ddpk?r_b, R3 equal to Zr_x Va?r_x?r_f?r_b W?r_a, with Z, V and W respectively equal to e(A, g2), e(h, g2) and e(h,w), —obtaining of a first signature parameter T equal to Aha, —calculation of a second signature parameter c by applying a cryptographic hash function H, to the public domain parameter dpk, to the pseudonym nym, to the first signature parameter T, to the signature coefficients R1, R2, R3 and to the message m, —calculation of signature parameters s_f, s_x, s_a, s_b, s_d, respectively equa

Abstract: The invention relates in particular to a method for securing the execution of a cryptographic algorithm (ALG) against passive sniffing, the method implementing masking (MSK) of data processed by the cryptographic algorithm. The masking (MSK) of said data includes a linear encoding step such as x?=x·L+c, in which x is the data to be masked, x? is the corresponding masked data, c is a code word included in a linear code C, and L is a matrix made up of linearly independent vectors not included in the linear code C. The invention also relates to a device (SC) implementing such a method.

Abstract: The invention provides a method of generating at least one derived identity of an individual 1, the method comprising the following steps: generating a first identifier id1 from biometric data of the individual; defining a serial number ns associated with the individual; generating first check data ctrl1 for verifying consistency between the first identifier id1 and the serial number ns; and concatenating the serial number ns, the first identifier id1, and the first check data ctrl1 in such a manner as to form a first derived identity ident1 of the individual.