In some examples, a method may include receiving retroreflected light that indicates at least one retroreflective property of a retroreflective article, wherein retroreflected light is captured at a first distance. The method may include determining a first set of information based at least in part on the at least one retroreflective property of the retroreflective article. The method may include receiving, from the light capture device, an image that includes at least one object, wherein the image is captured at a second distance. The method may include determining, based at least in part on the spatially resolvable property, a second set of information that corresponds to the object in the image. The method may include performing, by a computing device, at least one operation based at least in part on the second set of information.

A method of real-time plant selection and removal from a plant field including capturing a first image of a first section of the plant field, segmenting the first image into regions indicative of individual plants within the first section, selecting the optimal plants for retention from the first image based on the first image and the previously thinned plant field sections, sending instructions to the plant removal mechanism for removal of the plants corresponding to the unselected regions of the first image from the second section before the machine passes the unselected regions, and repeating the aforementioned steps for a second section of the plant field adjacent the first section in the direction of machine travel.

A high security key scanning system and method is provided. The scanning system may comprise a sensing device configured to determine information and characteristics of a master high security key, and a digital logic to analyze the information and characteristics of the master key. The sensing device may be configured to capture information about the geometry of features cut into the surface of the master key. The logic may analyze the information related to that geometry and compare it to known characteristics of that style of high security key in order to determine the data needed to replicate the features on a new high security key blank. The system may be configured to capture the surface geometry using a camera or other imaging device. The system may utilize object coating techniques, illumination techniques, filtering techniques, image processing techniques, and feature extraction techniques to capture the desired features.

The disclosure provides a method for acquiring an image, a structured light assembly, and an electronic device. The method includes: controlling a structured light camera to receive structured light that is diffracted by a display area of a display screen when exiting, then reflected by a target object, and diffracted by the display area again when entering to acquire a speckle image; filtering out second measurement spots and third measurement spots from the speckle image to obtain first measurement spots; and obtaining a depth image according to the first measurement spots and reference spots in a reference image.

A method for verifying a security document by means of a reading device wherein first transmission and/or reflection properties of a first region of the security document are detected in a first spectral range by the reading device and a first data set specifying these properties is generated therefrom, wherein the first region at least in some regions overlaps an optical security element arranged on the security document or embedded in the security document and wherein second transmission and/or reflection properties of the first region of the security document are detected in a second spectral range by the reading device and a second data set specifying these properties is generated therefrom, wherein the first spectral range differs from the second spectral range, and wherein, the authenticity of the security document and/or of the security element is checked on the basis of at least the first data set and the second data set.

The invention describes a depth map generator comprising an array comprising a plurality of individually addressable array elements, wherein an array element comprises a semiconductor emitter or a reflector arranged to reflect light emitted by a semiconductor emitter; a driver realised to switch an array element according to a predefined illumination pattern; a number of image sensors, wherein an image sensor is arranged to detect light reflected from a scene irradiated by the irradiation pattern; and a processing unit realised to compute a depth map of the scene on the basis of a light pattern detected by an image sensor. The invention further describes an irradiation arrangement for use in such a depth map generator; a method of generating a depth map of a scene; and a device comprising such a depth map generator.

A touch panel device according to an embodiment of the present invention is provided with: a panel having a contact surface for receiving a contact; a light emitting portion that inputs, to the panel, input light that is transmitted through the panel; a light receiving portion that detects output light including reflected light of evanescent light that has been generated, on the contact surface, from the input light; and a control portion that calculates and outputs a contact position on the basis of the output light detected by the light receiving portion and a relationship, stored in advance, between positions on the contact surface and the output light.

A liveness detection method includes: controlling a display screen to display a color according to a predetermined color display sequence, the color display sequence including at least two different colors; capturing an image of a target object in a color display process of the display screen; acquiring a color change sequence of a face of the target object in the image over time; and determining whether the target object is live based on a matching relationship between the color display sequence and the color change sequence.

A texture recognition device and an operation method of a texture recognition device are provided. The texture recognition device includes a light source array and an image sensor array. The light source array includes a plurality of light sources; the image sensor array is at a side of the light source array and includes a plurality of image sensors, and the plurality of image sensors are configured to receive light emitted from the plurality of light sources and reflected to the image sensors by a texture for a texture image collection; each of the image sensors includes a plurality of signal switches, and a signal of each of the image sensors is read through the plurality of signal switches for forming one image pixel of the texture image.

Systems, devices, and methods are disclosed for enabling private communication between head-mounted displays. A first user dons a first head-mounted display. The first head-mounted display authenticates that the first user is authorized to view information displayed by the first head-mounted display. In response to positive authentication, the first head-mounted display displays the information to the first user. The first user inputs a selection command via an input interface, such as, for example, gazing at particular information, to select some of the displayed information. The first head-mounted display generates a message based on the user selection, which may be encrypted by the first head-mounted display prior to transmission. The first head-mounted display transmits the message to a second head-mounted display, such that the second head-mounted display displays the message to an eye of a second user wearing the second head-mounted display.