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 lighting lens for a biometric measurement device comprises a paraboloidal or ellipsoidal reflector with symmetry of revolution, and a dioptric surface that has two different refractive power values in two perpendicular directions, said two refractive power values being negative or zero. Such a lens can be produced in the form of a block of transparent material and be used in a biometric measurement device. In particular, it makes it possible to capture skin prints as an image with an exposure time that is short.

Abstract: Detecting a true face includes: capturing a parallel image of a face captured by a camera having a filter polarising parallel to a polarisation direction and an orthogonal image of the face captured by a camera's filter polarising orthogonally to the polarisation 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 security gate has two walls defining between them a passage through which an individual passes, for each wall, a transparent lighting window extending over at least part of the wall, for at least one of the edges of the lighting window, a light source intended to light the edge and to generate light beams that propagate through the thickness of the lighting window, and for each lighting window, at least one extraction zone provided on the lighting window and intended to transmit the light beams towards the face of the individual passing through the passage, the light beams thus transmitted forming, with respect to the plane of the lighting window from which they emanate, an angle adapted to the geometry of the security gate so as to optimize the lighting of the individual.

Abstract: A sensor for venous networks of a part of a living body, having an infrared illumination source, a waveguide illuminated by the infrared illumination source and having, on one face, at least one extraction zone intended to extract the infrared rays from the waveguide in at least one main extraction direction, an image acquisition means disposed opposite the one face so as to define between them a passage through the entrance of which the part of the living body can enter, and having a sensitive element, the or each extraction zone being such that the or each main extraction direction of the extraction zone oriented so as not to intercept the sensitive element.

Abstract: The present invention concerns a sensor (100) for venous networks of a part (50) of a living body, comprising: an infrared illumination source (102), a waveguide (104) illuminated by said infrared illumination source (102) and having, on one face (112), at least one extraction zone (106) intended to extract the infrared rays (114) from said waveguide (104) in at least one main extraction direction (116), an image acquisition means (108) disposed opposite said face (112) so as to define between them a passage (118) through the entrance of which said part (50) of the living body can enter, and comprising a sensitive element (110), the or each extraction zone (106) being such that the or each main extraction direction (116) of said extraction zone (106) is oriented so as not to intercept said sensitive element (110).

Abstract: A security gate has two walls defining between them a passage through which an individual passes, for each wall, a transparent lighting window extending over at least part of the wall, for at least one of the edges of the lighting window, a light source intended to light the edge and to generate light beams that propagate through the thickness of the lighting window, and for each lighting window, at least one extraction zone provided on the lighting window and intended to transmit the light beams towards the face of the individual passing through the passage, the light beams thus transmitted forming, with respect to the plane of the lighting window from which they emanate, an angle adapted to the geometry of the security gate so as to optimize the lighting of the individual.

Abstract: The invention relates to a system (100) for capturing images of the face of an individual comprising: an image capture device (110) having a line of sight (112) directed towards the place from where the individual arrives, and two illumination devices (102, 104) disposed symmetrically with respect to the line of sight (112) and at a distance therefrom, each comprising means of generating a light flux intended to illuminate the face of the individual as he moves and whereof the illumination lobe (106, 108), representative of the luminance in a horizontal plane, has a maximum, the two lobes (106, 108) being symmetrical with each other with respect to the line of sight (112), the capture system (100) being characterized in that the generation means are such that each lobe (106, 108) is asymmetric with respect to the straight line bearing said maximum and has, from this maximum, a first front (122) curved towards the image capture device (110) and a second front (120) that is substantially plane and extending

Abstract: The present invention relates to a device (4) for positioning the face of a user relative to an image-capture apparatus (1), the positioning device comprising a picture-taking device (7) arranged to supply horizontally-reversed images, a display screen (5) for displaying the reversed images and connected to the picture-taking device, and means for superposing on the images displayed on the screen at least one positioning reference mark (6) for the user, the positioning reference mark and the displayed images lying substantially in the same plane. The invention also provides a corresponding method and image-capture apparatus.

Abstract: The invention relates to a multilayer card of thermoplastic material comprising first and second layers (7, 2) secured to each other, together with least one reinforced bonding zone (9) between the first layer and the second layer. The invention also provides a method of making a multilayer card secure.

Abstract: A method of analyzing a presence in a space (5), the method comprising the steps of: projecting at least one light beam (10) into the space towards a screen in such a manner that at least a portion of a body, if present in the space, casts a shadow onto the screen; and analyzing the shadow cast on the screen.

Abstract: The invention relates to a system (100) for capturing images of the face of an individual comprising: an image capture device (110) having a line of sight (112) directed towards the place from where the individual arrives, and two illumination devices (102, 104) disposed symmetrically with respect to the line of sight (112) and at a distance therefrom, each comprising means of generating a light flux intended to illuminate the face of the individual as he moves and whereof the illumination lobe (106, 108), representative of the luminance in a horizontal plane, has a maximum, the two lobes (106, 108) being symmetrical with each other with respect to the line of sight (112), the capture system (100) being characterised in that the generation means are such that each lobe (106, 108) is asymmetric with respect to the straight line bearing said maximum and has, from this maximum, a first front (122) curved towards the image capture device (110) and a second front (120) that is substantially plane and extending

Abstract: The invention concerns a method of acquiring the shape of the iris of an eye, comprising: a step of capture (112), by at least one image sensor, of at least one image of the iris, each image corresponding to the illumination of the iris by a light beam; a step of constructing (114) the three-dimensional shape of the iris from the image or images thus captured; and a step of verifying the non-flatness of the three-dimensional shape of the iris thus constructed.

Abstract: A method of analyzing a presence in a space (5), the method comprising the steps of: projecting at least one light beam (10) into the space towards a screen in such a manner that at least a portion of a body, if present in the space, casts a shadow onto the screen; and analyzing the shadow cast on the screen.

Abstract: A user positioning device comprising a stand (1) carrying two positioning markers (5) that are disposed so that each can be seen by a respective one of the eyes of a user, when the user is positioned correctly, and means (7) for forming a light path between each of the eyes of the user and the corresponding positioning marker, the light paths being optically separate from each other relative to the eyes of the user.

Abstract: The present invention relates to a device (4) for positioning the face of a user relative to an image-capture apparatus (1), the positioning device comprising a picture-taking device (7) arranged to supply horizontally-reversed images, a display screen (5) for displaying the reversed images and connected to the picture-taking device, and means for superposing on the images displayed on the screen at least one positioning reference mark (6) for the user, the positioning reference mark and the displayed images lying substantially in the same plane. The invention also provides a corresponding method and image-capture apparatus.

Abstract: The invention relates to a multilayer card of thermoplastic material comprising first and second layers (7, 2) secured to each other, together with least one reinforced bonding zone (9) between the first layer and the second layer. The invention also provides a method of making a multilayer card secure.

Abstract: A user positioning device comprising a stand (1) carrying two positioning markers (5) that are disposed so that each can be seen by a respective one of the eyes of a user, when the user is positioned correctly, and means (7) for forming a light path between each of the eyes of the user and the corresponding positioning marker, the light paths being optically separate from each other relative to the eyes of the user.