An artificial neural network-based method for selecting a surface type of an object is suitable for selecting a plurality of objects. The artificial neural network-based method for selecting a surface type of an object includes performing surface type identification on a plurality of object images by using a plurality of predictive models to obtain a prediction defect rate of each of the predictive models, wherein the object images correspond to surface types of a part of the objects, and cascading the predictive models according to the respective prediction defect rates of the predictive models into an artificial neural network so as to select the remaining objects.

A disclosed illumination apparatus includes first and second light sources that generate light for an illumination area to be illuminated; a first substrate on which the first and second light sources are mounted; and a second substrate that is disposed in an illumination direction of the light of the first and second light sources with respect to the first substrate, the second substrate having first and second diffraction grating elements formed integrally therewith, the first diffraction grating element being provided for the first light source, and the second diffraction grating element being provided for the second light source.

A curved fingerprint recognizing device with a light-guiding component, a first reflecting layer, a second reflecting layer, light source and an image capturing component is disclosed. In the light-guiding component, a first surface has a curved surface, a second surface locates opposite to the first surface, an outer side wall inclinedly connects the first surface and the second surface, an inner side wall inclinedly connects to the second surface, and a bottom surface connects horizontally the outer side wall and the inner side wall. The light beam emitted from the light source is reflected by the first reflecting layer and the second reflecting layer after passing through the bottom surface to be transmitted to the first surface having the curved surface and thereby fingerprints of a bottom and sidewalls of an object to be recognized can be obtained by the image capturing component at the same time.

A light emitting element array includes: a light emitting element group that includes plural light emitting elements; and plural lenses that are provided, corresponding to the plural light emitting elements, on a light emitting surface side of the plural light emitting elements, and that deflects light emitted from the plural light emitting elements according to a positional relation with the plural light emitting elements. Distances between central axes of light emission of the plural light emitting elements and central axes of the plural lenses corresponding to the plural light emitting elements increase from a center side of the light emitting element group toward an end side of the light emitting element group, and a degree of change in the distances decreases from the center side of the light emitting element group toward the end side of the light emitting element group.

An imaging device and an authentication controller are provided. The imaging device includes a modulator that includes a first pattern and that modulates light intensity with the first pattern, an image sensor that converts a light beam transmitted through the modulator into imaging data and outputs the imaging data, an image processing unit that performs, to the imaging data, a reconstruction process in which an image of the subject is reconstructed based on the cross-correlation operation between the imaging data and the pattern data having a second pattern and acquires an image, and a distance measurement unit that repeats the reconstruction process to the imaging data while changing a focus distance and acquires a focus distance having a highest contrast in a measurement region as a distance. The authentication controller performs image authentication and distance authentication using image data and distance data acquired by the imaging device.

An imaging device and an authentication controller are provided. The imaging device includes a modulator that includes a first pattern and that modulates light intensity with the first pattern, an image sensor that converts a light beam transmitted through the modulator into imaging data and outputs the imaging data, an image processing unit that performs, to the imaging data, a reconstruction process in which an image of the subject is reconstructed based on the cross-correlation operation between the imaging data and the pattern data having a second pattern and acquires an image, and a distance measurement unit that repeats the reconstruction process to the imaging data while changing a focus distance and acquires a focus distance having a highest contrast in a measurement region as a distance. The authentication controller performs image authentication and distance authentication using image data and distance data acquired by the imaging device.

The invention provides a fingerprint sensing device. A control circuit controls a part of point light sources to irradiate a fingerprint of a user. Reflected light generated by using the plurality of point light sources to irradiate the fingerprint of the user forms a light-emitted pattern including a plurality of reflected light patterns on a sensing layer, wherein each of the reflected light patterns is provided by a corresponding point light source, and each of the sensing units senses the reflected light patterns corresponding to at least two point light sources.

An authentication apparatus includes: an illumination device outputting light having a first polarization direction; a camera taking a first eyeball image, a second eyeball image, and a third eyeball image, of the user, which have a second polarization direction, a third polarization direction, a fourth polarization direction, respectively; and a control circuit. The control circuit (a) acquires cornea authentication information and iris authentication information, (b) generates an amplitude image, a phase image, and an average image, using the first eyeball image, the second eyeball image, and the third eyeball image, (c) authenticates a user ID corresponding to the average image, by referring to the iris authentication information, (d) authenticates a user ID corresponding to the amplitude image and the phase image, by referring to the cornea authentication information, and (e) determines a user ID corresponding to the user, using authentication results of the user ID in (c) and (d).

Systems and methods for through-display imaging. An optical imaging sensor is positioned at least partially behind a display and is configured to emit shortwave infrared light at least partially through the display to illuminate an object, such as a fingerprint, in contact with an outer surface of the display. Surface reflections from the object are received and an image of the object can be assembled.

The handwriting support device includes a beam splitter that reflects light from an image display surface such that a virtual image of an image displayed on the image display surface is visible on a writing surface facing the image display surface and transmits the light from a writing surface side such that the writing surface side is visible, a memory and a processor being configure to perform control for non-display of an image object, which overlaps with a real object on the writing surface and does not overlap with a tip of the writing instrument, among a plurality of image objects in a case where a first image including the plurality of image objects indicating writing target regions is displayed on the image display surface and the real object including the writing instrument is inserted into a space between the beam splitter and the writing surface.