Morpho

Idemia Identity & Security France

Idemia Identity & Security

Idemia Public Security France

Alain Thiebot

Joël-Yann Fourre

Jean Beaudet

Florence Guillemot

Marina Pouet

Benoît Thouy

Sylvaine Picard

Laurent Lambert

Gilles Monteilliet

Denis Dumont

Marcelin Ragot

Julien Doublet

Joël Yann Fourre

Jean-François Boulanger

Franck Bricout

Remy Chiu

Alexis Sireta

Benjamin Peyronneaud

Aurélie Moriceau

Joel-Yann Fourre

Benjamin Peyron-Neaud

Benoit Thouy

Michel Cruchaga

Adrien Besson

Jérôme Lorenzi

Jean-Francois Boulanger

Rémy Chiu

A method for biometric identification or authentication is described. An image of a body region is obtained. A truth map for said body region is obtained, said truth map associating, with each portion of a set of portions of said image of a body region, a probability that said portion belongs to a true body region. The image of the body region is then compared with a group of reference biometric data using the truth map. Finally, the identification or authentication of said body region is validated or invalidated in response to said comparison.

Method and device for biometric identification and/or authentication

A dermatoglyph detector includes a detection circuit and an electronic processor unit. The detection circuit includes an electrically conductive thin film in which there are formed both electrodes that are arranged to come into contact with the skin of a portion of a human body and also conductive tracks connecting the electrodes to the processor unit. The processor unit is arranged to determine electrical characteristics of the body portion extending between each pair of electrodes in contact with the skin, and to execute a computer program for acting on the basis of the determined electrical characteristics to distinguish between an authentic body portion and a fake body portion. The detection circuit includes at least two track segments of different shapes between two calibration terminals so as to present an impedance ratio that is not equal to unity.

Dermatoglyph detector

Disclosed is a fraud detection method to authenticate that an object is formed of human skin. The method includes an object being placed on a home location on the surface of a propagation medium of a sensor, lighting the home location of the surface by a light source emitting light rays illuminating the home location forming with said surface a plurality of incidence angles encompassing a critical angle defined by the refraction index of the propagation medium and by a refraction index expected for authentic human skin, receipt by an imager of light rays from the surface, and acquisition of an image, and determining whether the object matches an authentic human finger based on the refraction index of said object, as a function of the spatial light distribution on the acquired image.

Authentication by optical index

The invention relates to a device for the biometric acquisition and processing of an image of a part of the human body with dermatoglyphs, comprising a contact surface () configured so that the part of the human body is affixed to this contact surface (), a light source () configured to project onto the part of the human body a light pattern having a sinusoidal modulation of light intensity in a main direction with a target frequency, an imager () configured to acquire an image, and an automated data processing system () configured to implement a fraud detection method and a biometric identity recognition method using a periodic component parameter representative of an amplitude of a sinusoidal oscillation of light intensity in the acquired image in accordance with the main direction at the target frequency.

Biometric acquisition and processing device and method

A smartcard includes a fingerprint sensor and a detector circuit comprising at least first and second electrodes that are insulated from each other and that form an open circuit. The first electrode and the second electrode is arranged in such a manner that. When a user applies a first finger on the fingerprint sensor and uses a second finger to grip the smartcard, the first finger contacts the first electrode and the second finger contacts the second electrode so as to form a loop that closes the open circuit. The detector circuit further comprises a filter circuit connected to the first electrode and to the second electrode, a generator arranged to generate first signals across the terminals of the filter circuit, and processor means arranged to acquire second signals and, from the second signals, to detect whether the first and second fingers include a fake finger.

Smartcard including a fingerprint sensor

A method of recognizing individuals by means of at least one processor executing a recognition algorithm comprising the steps of:

Method and a device for recognizing an individual by biometric signature

The invention relates to a method for biometric processing of images of part of the human body comprising at least one finger, said method being performed by a sensor, and wherein an emissive screen () displays at least one first display pattern to light said part of the human body and an imager () acquires at least one first image of said part of the human body; from this first image, the automated data-processing system determines at least one second display pattern different to the first display pattern; the emissive screen () displays at least the second pattern to light said part of the human body and the imager () acquires at least one second image of said part of the human body; a biometric processing being performed on a final image constructed from at least the second image.

Method for biometric processing of images

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.

Device for checking the authenticity of a fingerprint

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.

Method of validation intended to validate that an element is covered by a true skin

Validation of using a finger as support of a fingerprint may include:

Method of validation of the use of a real finger as support of a fingerprint

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.x^b+c); extracting, from the filtered image and each sub-image, texture characteristics of face surface specularities; analyzing, for each face region, coefficient 'b' and the texture characteristics extracted regarding the model corresponding to said face region; and deciding the veracity of the face from the analysis.

Method for detecting a true face

The invention concerns an antifraud device () for validating the use of a real part of a body as an imprint-bearing substrate () and comprising:

Anti-fraud device

The invention relates to a method for validating a biometrical acquisition, mainly the acquisition of a body imprint of a body area such as fingerprints or a face imprint, wherein the method involves together with the biometric acquisition: lighting the body area using at least one radiation having at least two respective different wavelengths between approximately 500 nm and 1150 nm; taking at least two reflectometry measurements concerning said and at least two wavelengths for measuring the reflection index of the tissues for these wavelengths; calculating the ratio for two measured indices; and comparing the ratio with a range of reference values characterizing a haemoglobin-containing living tissue in terms of proportions of oxygenated and non-oxygenated forms characteristic of the living states for the wavelengths in question; if the ratio is included in said range, the body area is considered as living and the biometrical acquisition is validated; and conversely, if the body area is considered as not living, the biometrical acquisition cannot be validated.

Growing community of inventors

Issy-les-Moulineaux, France

Alain Thiebot