A method for controlling access of users to desktops, comprising: 1. a user enters a login; 2. an organization server verifies if the user is authorized to access the desktop, and returns a pseudo of the user; 3. the user scans a pattern of fingerveins of one finger with a biometric scanner comprising cameras at different angles; 4. a file corresponding to said images is encrypted by said biometric scanner (B) with a public key of a biometric server and signed with a private key of said biometric scanner, and sent to the desktop; 5. the desktop forwards said file to said biometric server; 6. the biometric server decrypts the file, verifies the signature of the biometric scanner, and matches the received images with reference images associated with said pseudo; 7. the biometric server decides if the recognition succeeded, failed, or if an additional scan is needed.

Systems and methods for optical imaging are disclosed. An optical sensor for imaging a biometric input object on a sensing region includes a transparent layer having a first side and a second side opposite the first side; a set of apertures disposed above the first side of the transparent layer; a first set of reflective surfaces disposed below the second side of the transparent layer configured to receive light transmitted through the first set of apertures and to reflect the received light; a second set of reflective surfaces disposed above the first side of the transparent layer configured to receive the light reflected from the first set of reflective surfaces and to further reflect the light; and a plurality of detector elements positioned to receive the further reflected light from the second set of reflective surfaces.

Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each color channel of the multi-channel light source (which is configured to produce a flash), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the flash). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.

Systems and methods for generating a three-dimensional representation of a surface using frustrated total internal reflection. The system may obtain a two-dimensional image of an object in close proximity to an imaging surface. The intensity of the electromagnetic radiation received for individual points on the object may be determined. The system may determine a distance between the imaging surface and the object at each of the individual points based on a correlation between the electromagnetic radiation transmitted towards the imaging surface and the electromagnetic radiation reflected from the imaging surface. The determined intensity of the electromagnetic radiation may indicate the electromagnetic radiation reflected from the imaging surface. A three-dimensional representation of the object may be generated based on the two-dimensional image and/or the determined distances between the imaging surface and the object at each of the individual points.

Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each channel of the multi-channel light source (which may be able to produce visible light and/or non-visible light), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the light). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.

To provide an electronic device capable of suppressing a decrease in resolution when the distance between an object to be imaged and an imaging unit is decreased. This electronic device includes a plurality of pixels, each of at least two pixels of the plurality of pixels including: a first lens that collects incident light; a first light shielding film portion having a first hole through which a part of the incident light that has been collected passes; and a photoelectric conversion unit configured to photoelectrically convert the incident light having passed through the first hole. The shape of the first hole with respect to the first light shielding film portion is different between a first pixel among the at least two pixels and a second pixel different from the first pixel among the at least two pixels.

A fake finger in which a transparent thin film is attached to a finger surface is discriminated. A fake-finger determination device includes: an imaging unit 10 that captures an authentication object as a fingerprint authentication object; a classifying unit 31 that classifies an image captured by the imaging unit 10 into a plurality of regions including at least a skin region and a background region using colors of pixels included in the image; and a determining unit 32 that determines whether or not a foreign substance is present in the periphery of a finger based on a feature of a region classified as neither the skin region nor the background region out of the regions classified by the classifying unit 31.

Systems and methods determine a swipe direction of an object on an electronic device to enable the performance of actions in response to the determined swipe direction. The swipe direction may be determined with respect to a biometric authentication sensor of the electronic device. According to certain aspects, signals that indicate the presence of an object may be received from proximity sensor(s) and/or a biometric authentication sensor. The swipe direction of the object may be determined based on the signals. An action may be performed on the electronic device in response to determining the swipe direction. An improved user experience of the electronic device may result through the use of these systems and methods.

An electronic device includes a substrate, a plurality of light sources, the plurality of light sources configured to emit an optical signal to an object through the substrate, at least one sensor underneath the substrate, the at least one sensor configured to detect biometric information associated with the object by receiving a reflected light signal, the reflected light signal corresponding to the optical signal reflected off the object and transferred through the substrate, and a multi-lens array including at least one support layer, a plurality of first lenses, and a plurality of second lenses, the at least one support layer in an upper portion of the at least one sensor, the plurality of first lenses on an upper surface of the at least one support layer, and the plurality of second lenses on a lower surface of the at least one support layer.

An optical identification device includes a circuit board, a top cover, an optical detection module and an optical channel. The top cover is disposed on the circuit board and has an identification region. The optical detection module is disposed on the circuit board and located inside the top cover. The optical detection module includes an optical emitter and an optical receiver. The optical emitter is adapted to emit an illumination beam toward the top cover. The optical receiver is adapted to receive the illumination beam reflected from the top cover. The optical channel is disposed between the optical emitter and the top cover, and adapted to block the illumination beam from projecting onto a lower surface of the identification region facing the optical receiver.