公开(公告)号：US11003991B2

公开(公告)日：2021-05-11

申请号：US15722490

申请日：2017-10-02

Applicant: Idemia Identity & Security France

Inventor： Herve Chabanne ,  Jonathan Milgram ,  Constance Morel ,  Emmanuel Prouff

IPC: G06N3/04 ,  G06N3/08 ,  G06F17/18 ,  H04L9/00

Abstract: A method for secure learning of parameters of a convolution neural network, CNN, for data classification includes the implementation, by data processing of a first server, including receiving from a second server a base of already classified learning data, the learning data being homomorphically encrypted; learning in the encrypted domain, from the learning database, the parameters of a reference CNN including a non-linear layer (POLYNOMIAL) operating an at least two-degree polynomial function approximating an activation function; a batch normalization layer before each non-linear layer (POLYNOMIAL); and transmitting the learnt parameters to the second server, for decryption and use for classification.

公开(公告)号：US20210136841A1

公开(公告)日：2021-05-06

申请号：US17067155

申请日：2020-10-09

Applicant: Idemia Identity & Security France

Inventor： Fabien Blanco ,  Jean-Yves Bernard ,  Marek Kociecki

IPC: H04W76/10 ,  H04W72/04 ,  H04W4/80

Abstract: A method of radio communication of a slave device with a master device, the method comprising steps of: receiving (202) by the slave device of a connection request sent by the master device comprising first communication parameters for communicating with the master device, the communication parameters being indicative of a sequence of frequency channels to be used during successive periods to communicate with the master device, during one of the periods, implementing by the slave device of a processing capable of causing the master device to send a connection update comprising second parameters for communicating with the master device to be used in place of the first communication parameters, the processing comprising an action (210) on one of the frequency channels capable of causing the master device to detect a degradation in communication quality on the frequency channel.

公开(公告)号：US10963672B2

公开(公告)日：2021-03-30

申请号：US16156773

申请日：2018-10-10

Applicant: IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Denis Dumont

IPC: G06K9/00 ,  A61B5/1172 ,  G06K9/20

Abstract: Method for detecting the presence of a body part carrying an imprint on an imprint sensor comprising a transparent face on which a body part must be placed, an image sensor, situated opposite the transparent face, able to acquire an image of an imprint, a light source for illuminating a body part placed on the transparent face. The method comprises: switching on the light source; acquiring a multicomponent image with the image sensor, each color component of the multicomponent sensor corresponding to a predefined wavelength range; obtaining, for each color component of said multicomponent image, information representing a signal generated by said image sensor for said color component; comparing said representative items of information with each other and detecting the presence of a body part according to the result of the comparison.

公开(公告)号：US10963666B2

公开(公告)日：2021-03-30

申请号：US16529312

申请日：2019-08-01

Applicant: IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Laurent Kazdaghli

IPC: G06K9/00

Abstract: A method for obtaining an image of at least one fingerprint from a sequence of images is disclosed. The method comprises a segmentation of images in a sequence of acquired images making it possible to determine regions liable to comprise a fingerprint, a tracking of regions determined along with the sequence of images and a calculation of a confidence mark for each region determined. The confidence mark of a region determined is incremented (or respectively decremented) at each acquired image if the region is present in (or respectively absent from) the image, the increment (or respectively the decrement) being dependent on the predefined image acquisition frequency. Information making it possible to obtain a final image containing fingerprints is generated by the method when a predefined number of regions each having reached a confidence mark at least equal to a predetermined threshold is obtained.

公开(公告)号：US20210056291A1

公开(公告)日：2021-02-25

申请号：US16990223

申请日：2020-08-11

Applicant: Idemia Identity & Security France

Inventor： Julien DOUBLET ,  Jean BEAUDET ,  Maxime THIEBAUT

IPC: G06K9/00 ,  G06K9/52 ,  G06K9/62

Abstract: A method for analysis of an intrinsic facial feature of a face presented (2) in a field of acquisition of an imager (3) comprising the following steps: the imager (3) acquires a first image of a face, and then acquires a second image of the face, based on the first image and the second image, a processing unit determines a variation of an intrinsic facial feature between the first image and the second image, without determining a value quantifying an absolute state of the intrinsic facial feature in the first image and/or in the second image; based on the variation of the intrinsic facial feature, the processing unit determines a state of the face presented (2) in the field of acquisition of an imager (3) and performs an action depending on the state of the face presented.

公开(公告)号：US20210018370A1

公开(公告)日：2021-01-21

申请号：US16923589

申请日：2020-07-08

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Jean-Francois MAINGUET ,  Joel Yann FOURRE

IPC: G01J5/34 ,  G06K9/00

Abstract: Method for capturing a thermal pattern by a sensor comprising a plurality of pixels each comprising a heat-sensitive measuring element, the method comprising, for each pixel: heating the measuring element; first reading of the electrical charges outputted by the pixel during a first measurement duration and giving a first measurement value x1; second reading of the electrical charges outputted by the pixel during a second measurement duration and giving a second measurement value x2; calculating a difference x1−α·x2, where α is a positive real number, and wherein more than half of the heating duration is implemented during the first measurement duration and less than half of the heating duration is implemented during the second measurement duration.

公开(公告)号：US20210011756A1

公开(公告)日：2021-01-14

申请号：US16911867

申请日：2020-06-25

Applicant: Idemia Identity & Security France

Inventor： Fabien BLANCO ,  Jean-Yves BERNARD

IPC: G06F9/48 ,  G06F9/4401 ,  G06F9/38

Abstract: The present invention relates to a device (1) such as a connected object comprising a first electronic circuit (2) comprising: a first processing unit (6) for executing a program, a first memory (8) for memorizing data during the execution of the program, a debug port (10) dedicated to checking the execution of the program from outside the first circuit, a second electronic circuit (4) connected to the debug port (10), comprising: a second memory (14) memorizing reference data related to the program, a second processing unit (12) for implementing the following steps automatically and autonomously via the debug port (10): checking the integrity of the data memorized by the first memory (8) and/or the compliance of the program's execution by the first processing unit (6) with a reference execution, assisted by the reference data.

公开(公告)号：US20200050821A1

公开(公告)日：2020-02-13

申请号：US16529312

申请日：2019-08-01

Applicant: IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Laurent KAZDAGHLI

IPC: G06K9/00

Abstract: A method for obtaining an image of at least one fingerprint from a sequence of images is disclosed. The method comprises a segmentation of images in a sequence of acquired images making it possible to determine regions liable to comprise a fingerprint, a tracking of regions determined along with the sequence of images and a calculation of a confidence mark for each region determined. The confidence mark of a region determined is incremented (or respectively decremented) at each acquired image if the region is present in (or respectively absent from) the image, the increment (or respectively the decrement) being dependent on the predefined image acquisition frequency. Information making it possible to obtain a final image containing fingerprints is generated by the method when a predefined number of regions each having reached a confidence mark at least equal to a predetermined threshold is obtained.

公开(公告)号：US10529047B2

公开(公告)日：2020-01-07

申请号：US16057657

申请日：2018-08-07

Applicant: IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Jean Beaudet ,  Francois Rieul ,  Joel-Yann Fourre ,  Pierre Chastel

IPC: G06F21/32 ,  G01G19/414 ,  G01G19/44 ,  G01G19/50 ,  G06Q50/26 ,  G06K9/00 ,  G07C9/00 ,  H04L29/06

Abstract: A fraud detection method for access control via facial recognition, wherein the following are carried out in the region of a zone where the access control is verified for an individual presenting in the region of the zone: a measure of the weight of the individual, at least one weight sensor being provided on the ground for this purpose; an estimation of the weight of the individual by processing by a computer unit of an image acquired of the face of an individual presenting at the access control; a comparison by the computer unit between the estimated weight and the measured weight and wherein the computer unit triggers or not the sending of a fraud detection signal as a function of the result of this comparison.

公开(公告)号：US10509992B2

公开(公告)日：2019-12-17

申请号：US16037145

申请日：2018-07-17

Applicant: IDEMIA IDENTITY & SECURITY FRANCE

Inventor： Philippe Bertiaux ,  Sylvie Pompeani ,  Francois Germain

IPC: G06K19/07 ,  G06K19/077

Abstract: The invention relates to an electronic card comprising a card body (1) comprising an upper surface (11) and a lower surface (12); a fingerprint sensor (2) flush with the upper surface of said card body; a tactile mark (3) placed on the upper surface of the card body near the fingerprint sensor, said tactile mark having an excess thickness from the upper surface of the card to guide, when said mark is touched, a correct positioning of a finger on said fingerprint sensor, the thickness of the tactile mark being such that the card has a thickness compatible with standard ISO 781 ID1, the thickness of the tactile mark preferably being between 30 and 60 μm, typically 50 μm.