A method in a first wireless communication device for displaying current location information representing a current location of a second wireless communication device. The method entails, from within a communication application executing on a processor of the first wireless communication device, receiving the current location information representing the current location of the second wireless communication device, performing a reverse look-up of the received current location of the second wireless communication device to determine address information, displaying a map from within the communication application, and identifying the received current location information on the displayed map with a name associated with the determined address information.

A method in a first wireless communication device for displaying current location information representing a current location of a second wireless communication device. The method entails, from within a communication application executing on a processor of the first wireless communication device, receiving the current location information representing the current location of the second wireless communication device, performing a reverse look-up of the received current location of the second wireless communication device to determine address information, displaying a map from within the communication application, and identifying the received current location information on the displayed map with a name associated with the determined address information.

The disclosure presents novel methods to conduct aerial surveying, inspection and measurements with higher accuracy in a fast and easy way, comprising: (1) flying a drone with an accelerometer, gyro, and camera sensors over a target object; (2) capturing a first aerial image at a first position; (3) capturing a second aerial image at a second position, wherein the second position has a horizontal and vertical displacement from the first position; (4) calculating the displacements between the first and second location using a sensor fusion estimation algorithm from the position sensors' data; (5) solving for the pixel depth information of the aerial images by using a single-camera stereophotogrammetry algorithm with the relative altitude and horizontal distance; (6) deriving the ground sample distance (GSD) of each pixel from the calculated depth information; (7) using the image pixel GSD values to compute any geometric properties of the target objects.

A method for image generation, preferably including: generating a set of mission parameters for a UAV mission of the UAV associated with aerial scanning of a region of interest; controlling the UAV to perform the mission; generating an image subassembly corresponding to the mission; and/or rendering the image subassembly at a display.

A method for image generation, preferably including: generating a set of mission parameters for a UAV mission of the UAV associated with aerial scanning of a region of interest; controlling the UAV to perform the mission; generating an image subassembly corresponding to the mission; and/or rendering the image subassembly at a display.

Disclosed is a method of high-precision 3D reconstruction of existing railway track lines based on UAV multi-view images, including: acquiring initial data, acquiring a UAV image rail top centerline, calculating a rail top centerline based on a nonlinear least squares method, and calculating three-dimensional coordinates of the rail centerline. Based on the multi-view geometry principle in computer vision and photogrammetry, object space coordinates of the line can be directly calculated by using image information, which does not require outdoor workers to work online and can effectively improve the safety of railway operation line surveying and mapping. Therefore, this method has important engineering application value and application prospect.

Disclosed is a method of high-precision 3D reconstruction of existing railway track lines based on UAV multi-view images, including: acquiring initial data, acquiring a UAV image rail top centerline, calculating a rail top centerline based on a nonlinear least squares method, and calculating three-dimensional coordinates of the rail centerline. Based on the multi-view geometry principle in computer vision and photogrammetry, object space coordinates of the line can be directly calculated by using image information, which does not require outdoor workers to work online and can effectively improve the safety of railway operation line surveying and mapping. Therefore, this method has important engineering application value and application prospect.

A method in a first wireless communication device for displaying current location information representing a current location of a second wireless communication device. The method entails, from within a communication application executing on a processor of the first wireless communication device, receiving the current location information representing the current location of the second wireless communication device, performing a reverse look-up of the received current location of the second wireless communication device to determine address information, displaying a map from within the communication application, and identifying the received current location information on the displayed map with a name associated with the determined address information.

A method in a first wireless communication device for displaying current location information representing a current location of a second wireless communication device. The method entails, from within a communication application executing on a processor of the first wireless communication device, receiving the current location information representing the current location of the second wireless communication device, performing a reverse look-up of the received current location of the second wireless communication device to determine address information, displaying a map from within the communication application, and identifying the received current location information on the displayed map with a name associated with the determined address information.

A self-contained battery-operated device is fixedly mounted to a drone device in a plurality of drone devices. The first self-contained battery-operated device includes one or more processors, an accelerometer, a gyroscope, a location detection device, a two-dimensional pixilated detector, and memory, all connected by a common bus. Time-stamped images of an environmental region are captured using the two-dimensional pixilated detector at a time when the drone device is airborne. For each of the captured time-stamped images, a respective set of meta data is obtained, which includes (1) rotational values obtained using the gyroscope, indicating a relative orientation of the self-contained battery-operated device with respect to a respective reference orientation at a time of image capture, and (2) location information obtained using the location detection device at a time of image capture. The time-stamped images and the respective sets of meta data are sent to a remote processing device.