The invention provides a control system for a construction machine comprises a construction machine and a measuring instrument, wherein the construction machine comprises at least two targets, a tilt detecting component, a driving unit, a machine control unit and a machine communication unit, wherein the measuring instrument comprises a distance measuring unit, an optical axis deflecting unit for deflecting the optical axes, a projecting direction detecting unit for detecting a deflection angle and a deflecting direction and a measurement control unit for determining a measuring point and transmitting a measurement result, wherein the measurement control unit allows the distance measuring unit to alternately measure the targets and calculates a direction and front-back and left-right tilts of the construction machine based on three-dimensional positions of the targets and a detection result of the tilt detecting component, and the machine control unit controls the driving unit based on a calculation result.

A tracking system provides light source(s), a mobile communication unit and light sensor(s) with cameras, and a central control unit at least coupled to the sensor(s). The communication unit receives with its camera an identification information item broadcast by the light source(s) and broadcasts an activation signal, including data correlated with the received item, to the control unit. The control unit determines, based on the signal, at which position the communication unit is arranged and which sensor(s) is arranged relative to the position of the communication unit so that the communication unit can be detected by the camera of the sensor; activates the camera of the detected sensor(s) for providing image information by its camera to the control unit, to determine and identify a carrier of the communication unit at the determined position; and activates sensor(s) coupled to the control unit for tracking the identified carrier of the communication unit.

Disclosed are methods, systems, devices, apparatus, computer-/processor-readable media, and other implementations, including a method to process one or more light-based signals that includes determining mobile device data and coarse previous field-of-view (FOV) data representative of pixels of a light-capture device of a mobile device that detected light-based signals from at least one light device located in an area where the mobile device is located, determining, based on the mobile device data and the coarse previous FOV data, predicted one or more pixels of the light-capture device of the mobile device likely to receive light signals from one or more light devices, in the area where the mobile device is located, capable of emitting one or more light-based communications, and activating the predicted one or more pixels of the light-capture device.

Embodiments of systems and methods of power optimization in VLC positioning are disclosed. In one embodiment, a method of power optimization in visible light communication (VLC) positioning of a mobile device comprises receiving, by a transceiver, positioning assistance data of a venue, where the positioning assistance data includes identifiers and positions of light fixtures in the venue, decoding, by a VLC signal decoder, one or more light fixtures within a field of view of the mobile device to obtain corresponding light fixture identifiers, determining, by a controller, a motion of the mobile device with respect to the one or more light fixtures based on the light fixture identifiers and the positioning assistance data of the venue, and controlling, by the controller, the mobile device to operate in a reduced power mode based on the motion of the mobile device with respect to the one or more light fixtures.

One innovation includes an imaging device having an image sensor, a lens having a movable optical element, and an actuator operative to move the one optical element to a plurality of lens positions. The imaging device further includes an electronic display, a power source electrically coupled to the camera system and to the display, the power source (e.g., voltage regulator) configured to provide power to the display and the camera system, a memory circuit configured to store information representing an actuator control value that corresponds to a low-power focus position, and an electronic hardware processor coupled to the memory circuit, the actuator and the electronic display. The processor may retrieve the actuator control value from the memory circuit and controls the actuator to move the optical element to the lens position that corresponds to the low-power focus position when the camera system is in a deactivated state.

A sensor arrangement comprises at least a first, a second, and a third light sensor. A three-dimensional framework comprises at least a first, a second, and a third connection means which are connected to the at least first, second, and third light sensor, respectively. The first, the second, and the third connection means are configured to align the at least first, second, and third light sensor along a first, second, and third face of a polyhedron-like volume, respectively, such that the sensor arrangement encloses the polyhedron-like volume. The invention also relates to a method for operating the sensor arrangement.

The present invention is a standalone motion tracking device using Linear Optical Sensor Arrays (LOSA). The invention constitutes a tracker module and an active marker, which communicate with each other wirelessly. The motion tracking device uses optical tracking along with inertial sensing to estimate the position and attitude of the active marker relative to the tracker module. The system determines the position of the active marker using stereovision triangulation through multiple views emanating from different LOSA modules. The present invention also features novel use of a multi-slit aperture for LOSA sensors in order to increase the field of view and resolution of the position estimates. The system uniquely leverages the structural geometry of the active marker, along with inertial sensing, to estimate the attitude of the active marker relative to the tracker module without relying on magnetic sensing that may often be unreliable.

A system for remotely navigating a local-user manually operating a mobile device associated with an imaging device such as a camera, the system performing: communicating in real-time, from an imaging device associated with the first user, to a remote station, imaging data acquired by the imaging device, analyzing the imaging data, in the remote station, to provide actual direction of motion of the first user, acquiring, by the remote station, an indication of a required direction of motion of the first user, communicating the indication of a required direction of motion to a mobile device associated with the first user, and providing, by the mobile device to the first user, at least one humanly sensible cue, where the cue indicates a difference between the actual direction of motion of the first user and the indication of a required direction of motion.

In one embodiment, a technique is provided for tracking a mobile device within a building. A course position estimate of the mobile device is determined using a positioning system. The course position estimate indicates a room in which the mobile device is located. One or more sensors of the mobile device capture a live point cloud of surroundings of the mobile device. Tracking software accesses a portion of a pre-captured point cloud of the interior of the building that serves as a reference. The portion of the pre-captured point cloud corresponds to the room indicated by the course position estimate. Once the initial pose is determined, an updated pose of the mobile device is determined when the mobile device is moved, based on a further comparison of the live point cloud to the portion of the pre-captured point cloud.

A device for determining relative orientation between two locations including an imager, an inertial-orientation-sensor firmly attached to the imager for determining information relating to the orientation thereof and which exhibits drift and a processor coupled with the imager and with the inertial-orientation-sensor. The processor determines a first orientation-measurement and first time-tag when the device is oriented with a first-orientation-indicator located at a first location. The processor determines a second-orientation-measurement and second time-tag when the device is oriented with a second-orientation-indicator located at a second location. The processor determines a third-orientation-measurement and third time-tag when the device is oriented again with the first-orientation-indicator. The processor determines the drift associated the inertial-orientation-sensor according to difference between the first-orientation-measurement and the third-orientation-measurement the respective time-tags associated therewith. The processor determines an angle-difference between the first-orientation-indicator and the second-orientation-indicator according to the first-orientation-measurement and the second-orientation-measurement, the first and second time-tags and the drift.