An example method includes obtaining, by processing circuity, an image depicting a face of a person wearing eyewear and a reflection pattern generated by projecting light onto a lens of the eyewear and determining, by the processing circuitry, an optical parameter of the lens based on the image. The method further includes receiving, by the processing circuitry and from an electronic database, a personal characteristic data relating to a previously identified person and comparing, by the processing circuitry, the optical parameter of the lens to the personal characteristic data. The method further includes determining, by the processing circuitry and based on the comparison, a score indicative of a match between the person wearing eyewear and the previously identified person.

Apparatus and associated methods relate to ranging an object nearby an aircraft by triangulation of spatially-patterned light projected upon and reflected from the object. The spatially patterned light can have a wavelength corresponding to infrared light and/or to an atmospheric absorption band. In some embodiments, images of the object are captured both with and without illumination by the spatially-patterned light. A difference between these two images can be used to isolate the spatially-patterned light. The two images can also be used to identify pixel boundaries of the object and to calculate ranges of portions of the object corresponding to pixels imaging these portions. For pixels imaging reflections of the spatially-patterned light, triangulation can be used to calculate range. For pixels not imaging reflections of the spatially-patterned light, ranges can be calculated using one or more of the calculated ranges calculated using triangulation corresponding to nearby pixels.

Embodiments of the present disclosure provide a fingerprint recognition method and a fingerprint recognition apparatus, where the method includes: collecting a plurality of optical signals of a finger to be detected; and judging whether the finger to be detected is a living body according to the plurality of optical signals of the finger to be detected. The method provided in the embodiments of the present disclosure may improve the security of the fingerprint recognition technology, and may effectively avoid the problem that fingerprint recognition is cracked using an artificial body fingerprint.

Systems and methods for communicating in a network using parcel theft share signals in accordance with various embodiments of the present disclosure are provided. In one embodiment, an audio/video (A/V) recording and communication device comprises: a camera configured to capture first image data of a drop-off zone; a communication module; and a processing module comprising: a processor; and a parcel theft deterrence application that configures the processor to: monitor a parcel in the drop-off zone, wherein the parcel is associated with parcel tracking data; determine that the parcel has been removed from the drop-off zone; generate a parcel theft share signal using the first image data and the parcel tracking data, wherein the parcel theft share signal includes a command to share the first image data with a network of users; and transmit the parcel theft share signal to the backend server using the communication module.

A wearable computing device includes various biometric sensors for recording biometric measurements of a user wearing the wearable computing device. The wearable computing device is further configured to interpret the biometric measurements as commands to be performed. The wearable computing device also includes modules and logic that determine whether the biometric measurements were voluntary or involuntary movements by the user, which indicate whether the user intended such biometric measurements to be input to the wearable computing device. Where the biometric measurements indicate that the user's movements and/or gestures were voluntary, the wearable computing device is configured to further classify and analyze the biometric measurements. This classification and analysis yields the different types of actions and objects the user was engaged in or acting on at the time the biometric measurements were obtained.

A gaze tracking system includes a contact lens, a photodetector element, a light conditioning element and electronics. The contact lens includes a fiducial having a position. The photodetector element receives a light signal from the fiducial and provides a photodetector output signal. The light signal provides a light intensity pattern at the photodetector. The optical conditioning element receives the light signal and provides a variation in the light intensity pattern on the photodetector in response to changes in the position of the fiducial. And the electronics process the photodetector output signal to calculate the position of the fiducial. A method includes detecting a light signal from a fiducial included in a contact lens, and tracking the contact lens by analyzing the light signal.

There are provided an environment recognition device and an environment recognition method. The environment recognition device obtains luminances of a target portion in a detection area of a luminance image, assigns a color identifier to the target portion according to the luminances of the target portion, based on association between a color identifier and a luminance range retained in a data retaining unit, and groups target portions assigned one of one or more color identifiers associated with a same specific object, and of which position differences in the width direction and in the height direction are within a predetermined range, based on association between the color identifier and the luminance range retained in the data retaining unit.

A mark irradiation unit (130) irradiates an object with a mark. An image capture unit (140) captures an image of the object, and generates image data. Then, an image capture area data generation unit recognizes a position of the mark in the object, and cuts out image capture area data which is apart of the image data on the basis of the mark. For this reason, the mark irradiation unit (130) irradiates the object with the mark, and thus even when a positioning symbol is not printed on the object to be stored as the image data, only a necessary portion in the image data is cut out.

A driving assistance device includes: an image capturing part configured to image-capture a rear lateral area of a host vehicle and a dead angle area; a display part configured to display a video image captured by the image capturing part; and a blinker switch configured to make a signal of a movement of the host vehicle to a first side or a second side. The display part displays the video image according to a turn on of the blinker switch indicating a movement of the vehicle to the second side, turns off the display of the video image when a predetermined amount of time elapses after the blinker switch is turned off, and turns off the display of the video image before the predetermined amount of time elapses when it is predicted that the host vehicle moves to the first side within the predetermined amount of time.

Some embodiments provide a novel method for harnessing the heat generated by one or more components (e.g., a set of IR LEDs) of an A/V recording and communication device in order to manage the temperature of one or more batteries of the A/V recording and communication device. Some aspects of the present embodiments raise the temperature of the battery in a cold weather without requiring any additional electrical power (e.g., without consuming any additional power for heating up the battery). In one aspect of the present embodiments, a thermally conductive sheet is coupled to a printed circuit board to which one or more IR LEDs are coupled. The thermally conductive sheet transfers the waste heat generated by the IR LEDs of the A/V recording and communication device to a rechargeable battery of the device.