A method includes the steps of obtaining a frame from an image sensor, the frame comprising a number of pixel values, detecting a change in a first subset of the pixel values, detecting a change in the second subset of the pixel values near the first subset of the pixel values, and determining an occupancy state based on a relationship between the change in the first subset of the pixel values and the second subset of the pixel values. The occupancy state may be determined to be occupied when the change in the first subset of the pixel values is in a first direction and the change in the second subset of the pixel values is in a second direction opposite the first direction.

An optical structure, a display substrate and a display device are provided. The optical structure includes a first medium layer being transparent and an opaque layer which is arranged on the first medium layer and includes a plurality of vias. The optical structure is configured to allow light rays passing through each of the plurality of via to project to a corresponding light ray receiving area respectively.

Provided are systems (e.g., a modified fundus camera system) and methods for measuring ocular distortion, the methods comprising projecting an image of a known target pattern having characteristic features onto an area of a retinal plane/surface to provide a distorted retinal image of the target pattern across the area of the retinal surface, recording the distorted retinal image of the target pattern using an image sensor to provide a captured distorted retinal image of the target pattern across the area of the retinal surface, identifying the characteristic features of the captured distorted retinal image, and comparing the identified characteristic features of the captured distorted retinal image of the target pattern across the area of the retinal surface to corresponding characteristic features of the known target pattern to provide a map of ocular distortion across the area of the retinal surface. Also provided are systems and methods for measuring retinal shape.

Disclosed is a control method for an infrared light source assembly (10). The method is used for an electronic device (100), wherein the electronic device (100) comprises a camera (20). The infrared light source assembly (10) comprises at least two infrared light sources (12) having different illumination ranges. The control method comprises: (S32) controlling the camera (20) so that same collects a face image; (S34) processing the face image to acquire face position information; and (S36) starting, according to the face position information, an infrared light source (12) having an illumination range corresponding to that into which a face falls, and turning off other infrared light sources (12) or keeping some turned off. Further disclosed are an electronic device (100) and a computer-readable storage medium (800).

A captured image acquisition section 50 acquires from an imaging apparatus 12 data of a polarized image captured of a target object and stores the image data into an image data storage section 52. A region division section 58 in a normal line information acquisition section 54 divides a plane of the image into regions according to a predetermined criterion such as a polarization degree or luminance. A normal line calculation section 60 obtains a distribution of normal lines of each region by applying either a specular reflection model or a diffuse reflection model thereto. An integration section 62 integrates the distributions of normal lines of the regions into a normal line distribution of the entire image. An output data generation section 56 performs information processing using the normal line distribution and outputs the result of the processing.

A 3D imaging and image processing system is configured to collect and analyze data defining a predetermined set of physical and visual attributes of a collectible object. The collected 3D image information is stored in a database, which also contains a record of 3D image information associated with a defined gold-standard object of the same kind. The analysis is used to generate as an output an “objective valuation” of the collectible object based upon a comparison to the stored gold-standard image data. When used with collectible coins, the objective valuation is used in the assignment of a specific “grade”, using a well-known industry grading standard.

Provided are an illumination device and an electronic apparatus. The illumination device includes a light source configured to emit light, a surface light source layer configured to convert the light emitted from the light source to surface light, a focusing lens configured to focus the surface light from the surface light source layer, and a display panel including an aperture through which light focused by the focusing lens passes.

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.

In a method for suppression of reflections in at least one camera image of a camera of a motor vehicle, the camera generates the at least one camera image and thereby a polarization filter device dampens light incident from a surrounding field in regard to a predetermined polarization direction. An estimator device estimates a respective orientation of a respective surface normal of at least one surface on at least one environment object and an adjusting device determines a respective target polarization direction for the polarization filter device in dependence on the respective estimated orientation of the at least one surface normal, by which a respective representation of reflections at the respective surface is reduced in the at least one camera image, and generates a control signal according to the respectively determined target polarization direction, and the polarization filter device adjusts its polarization direction in dependence on the control signal.

The present disclosure provides an apparatus and a method for fingerprint imaging. The apparatus includes: a light source configured to generate light, wherein a light intensity distribution of the light generated by the light source conforms to a preset encoding mode; a sensing surface on which the light generated by the light source forms a signal light with fingerprint information; and an imaging module configured to image the signal light to obtain a fingerprint image. Embodiments of the present disclosure can encode the fingerprint image by the encoding mode and can “encrypt” the fingerprint image by the encoding mode, thus a clear fingerprint image can be obtained by decoding based on obtaining the preset encoding mode, which can effectively improve the security of fingerprint imaging.