A system for registering multiple point clouds captured by an aircraft is disclosed. The system includes a speckle generator, at least one three-dimensional (3D) scanner, and a processor coupled thereto. In operation, the speckle generator projects a laser speckle pattern onto a surface (e.g., a featureless surface). The at least one 3D scanner scans the featureless surface to generate a plurality of point clouds of the featureless surface and to image at least a portion of the laser speckle pattern. The processor, which is communicatively coupled with the at least one 3D scanner, registers the plurality of point clouds to generate a complete 3D model of the featureless surface based at least in part on the laser speckle pattern.

An electronic device includes an electromagnetic radiation source having an axis, a set of optics disposed about the axis, a reflector disposed about the axis non-symmetrically, and a controller configured to operate the electromagnetic radiation source while controlling a beam steering orientation (e.g., rotation) of the reflector. The reflector is disposed to reflect electromagnetic radiation emitted by the electromagnetic radiation source. The set of optics is disposed to shape electromagnetic radiation emitted by the electromagnetic radiation source and direct electromagnetic radiation received from the reflector into a panoramic field of view about the axis.

An iris cap for a beacon is cylindrical in shape with defined wall length to create such an iris for the intended application. One application for example, an axicon will create defined output angle of emission dependent on the source emitter’s output angle and the axicon angle. Given the cost and difficulty of reproducing several MWIR/LWIR beacons for specific applications of maximum positive output angle, the Iris Cap introduces a simple solution. The Iris Cap can create specific maximum angles to reduce risk of over exposure of the beacon, simply by attaching the Iris Cap to the location of the emission with a countersunk screw.

An apparatus includes a substrate, a first patterned layer, and a second patterned layer. The first patterned layer may be coupled to the substrate and may have a first metasurface pattern. The second patterned layer disposed separately from the substrate and the first patterned layer, and may have a second metasurface pattern. Movement of the first patterned layer relative to the second patterned layer may be controllable via control circuitry such that a gap distance of a gap between the first patterned layer and the second patterned layer is changed to cause a transmittance for radiant energy of a selected wavelength passing through the apparatus to change from a first transmittance value to a second transmittance value.

Electronic device comprising: a lighting device, capable of illuminating a room or the like; a photodetector; an ultra-wideband pulse transmitter; an ultra-wideband pulse receiver; a controller, connectable to the internet;
wherein the controller is adapted for coding a signal and transmitting it to the lighting device and/or to the pulse transmitter, and for decoding a signal received by the photodetector or the pulse receiver; wherein the lighting device is adapted to transmit the signal as a LiFi signal and the pulse transmitter is adapted to transmit the signal as a UWB signal.

A visual positioning system for mobile devices includes at least one infrared camera, at least one infrared illumination source, and a processor that coordinates operation of the at least one camera and illumination sources. A flood IR infrared illumination source illuminates environmental objects for localization of the mobile device during a first camera exposure window, and a structured IR illumination source illuminate environmental objects for detection and mapping of obstacles during a second camera exposure window. A visual SLAM map is constructed with images obtained from a first camera, with a single map being useable for positioning and navigation across a variety of environmental lighting conditions. A method for training a robot includes receiving operator input signals configured to start and stop recording of defined routes during the guiding of the mobile robot along paths between different pairs of desired robot destinations, such that routes for subsequent use by the robot are generated for paths imaged while recording is active.

An apparatus of rapid-positioning with curved light surface includes a transmitter and a receiver. The transmitter can emit an optical signal to the receiver. The receiver can receive an optical signal emitted by the transmitter. The apparatus of rapid-positioning with curved light surface determines a position of the receiver according to the optical signal received by the receiver. The transmitter includes: a light emitter capable of emitting optical signals of at least two flicker frequencies; and a hollow hemispherical cover provided with fixed-angle opaque sections and variable-angle opaque sections, and regions between the fixed-angle opaque sections and the variable-angle opaque sections being light transmission regions. Therefore, the apparatus and method of rapid-positioning with curved light surface provided by the present application can accurately position the receiver, and the receiver can be placed on an object surface to receive the optical signal of the transmitter, so as to perform an accurate indoor positioning. Therefore, in an intelligent production environment, a robot can accurately assist to assemble and convey materials and products. The apparatus of rapid-positioning with curved light surface of the present application can perform multiple positioning during one rotation, which can make the positioning faster.

A visible light positioning receiver arrangement for obtaining spatial position information of the receiver arrangement from a plurality of luminaires (5), at least one of the luminaires including at least one associated modulated light source for transmitting a light signal providing positional information of one or more reference points associated with the luminaire, said receiver arrangement including: an imaging receiver for capturing an image of the luminaires and associated said reference point(s); and a non-imaging receiver (7) for estimating an angle of arrival (AOA) of light from each said modulated light source, and for decoding the reference point positional information therefrom; wherein said AOA information and reference point positional information from the non-imaging receiver is matched to the image captured by the imaging receiver to obtain said spatial position information.

Disclosed are an apparatus for implementing relative positioning and a corresponding relative positioning method. A positioning apparatus includes one or more first positioning markers and one or more second positioning markers. The first positioning markers define a plane. At least a subset of the second positioning markers is located outside the plane defined by the first positioning markers. The method includes: obtaining physical position information of the first positioning markers and the second positioning markers on the positioning apparatus; obtaining an image that is acquired by an imaging device and depicts the positioning apparatus; determining imaging position information of the first positioning markers and the second positioning markers based on the image; and determining, according to the physical position information and the imaging position information of the first positioning markers and the second positioning markers in combination with intrinsic parameter information of an imaging component of the imaging device, position information and/or attitude information of the imaging device relative to the positioning apparatus when the image is acquired.

A visual positioning system for mobile devices includes at least one infrared camera, at least one infrared illumination source, and a processor that coordinates operation of the at least one camera and illumination sources. A flood IR infrared illumination source illuminates environmental objects for localization of the mobile device during a first camera exposure window, and a structured IR illumination source illuminate environmental objects for detection and mapping of obstacles during a second camera exposure window. A visual SLAM map is constructed with images obtained from a first camera, with a single map being useable for positioning and navigation across a variety of environmental lighting conditions. A method for training a robot includes receiving operator input signals configured to start and stop recording of defined routes during the guiding of the mobile robot along paths between different pairs of desired robot destinations, such that routes for subsequent use by the robot are generated for paths imaged while recording is active.