A system and a method may detect underground water or gas leakage. The method may include receiving a first scan of an area including an underground gas pipe at a first polarization, the first scan including first microwave reflections of the area at a wavelength range of 3.8 cm to 1.3 m; receiving additional data, filtering electromagnetic noise from the first scan using the additional data; creating a water roughness map based on typical roughness values of a set of types of water sources and the filtered first scan; identifying one or more water accumulations at one or more locations along the gas pipe using the water roughness map and the filtered first scan and calculating the water content at the one or more locations along the gas pipe based on the identified one or more water accumulations.

According to one embodiment, a security inspection system includes a determination device and a control device. The determination device performs first determination regarding whether a target has a predetermined object. The control device controls a passage management device which performs second determination regarding whether the target has been permitted to pass. The control device transmits a second signal to the determination device when receiving a first signal from the passage management device. The first signal indicates a start of the second determination. The determination device starts the first determination when receiving the second signal.

An apparatus comprising an interface and a processor. The interface may be configured to receive pixel data generated by a capture device and an activation signal generated by at least one of a plurality of sensors. The processor may be configured to process the pixel data arranged as video frames, perform computer vision on the video frames to detect objects, perform a classification of the objects, present a control signal in response to receiving the activation signal, determine whether there is a match between the classification and an object class and generate a calibration signal in response to the match. The computer vision may determine which zone that the objects have been detected in. Each zone may comprise a coverage region of one of the sensors. The calibration signal may adjust parameters of the sensors that correspond to the zone with the objects that do not have the match.

An elevator door sensor arrangement including: a position sensor configured to determine a configuration of an elevator door of an elevator car; an auxiliary sensor configured to monitor for an object in a sensing region outside of the elevator car, the region being an approach to the elevator car; and a door sensor controller configured to output a signal to a door controller indicating that an object has been sensed by the auxiliary sensor in the sensing region, wherein the sensing region is altered in size and/or location based on the configuration of the elevator door as determined by the position sensor.

A reconfigurable GPR device for acquiring radar data about a medium includes a radar antenna with a first polarization, a processor unit connected to the antenna, and a casing around the antenna and the processor unit. Further the device includes at least one of a wheel assembly and a direction-determining unit. If present, the wheel assembly includes a holder, a wheel and a wheel rotation sensor. The wheel rotation sensor is connected to the processor unit, and an axis of the wheel is pivotal relative to the first polarization. If present, the direction-determining unit is connected to the processor unit and adapted to determine directional information. The directional information is descriptive of an angle between a direction of movement of the device and the first polarization.

The present application relates to a three-dimensional imaging method and apparatus, and a 3D imaging device. The method comprises generating 3D image information by capturing a 3D capture area containing a detected object using a depth camera; extracting a mask of the detected object from the 3D image information; determining an imaging area associated with the detected object based on the mask of the detected object; collecting data from a holographic data collection area containing the detected object by a holographic data collection device, generating holographic data; and performing image reconstruction on the imaging area based on the holographic data.

An imaging apparatus that includes a scanning mirror arrangement, optics, and a detector arrangement comprising a plurality of detectors. The plurality of detectors are capable for detecting submillimeter-/millimeter-range electromagnetic radiation and arranged within a region defined by an outer periphery and an inner periphery of the detector arrangement. The outer and inner peripheries are substantially circular in shape.

A portal for scanning a person walking through a surveillance volume defined by the portal, wherein the surveillance volume is illuminated by a magnetic field, and wherein the person is carrying at least one object on the person's body, the portal having a plurality of magnetic sensor modules arranged in at least one array and positioned on at least one of first and second opposing sides of the portal, wherein the plurality of magnetic sensor modules measure perturbations in the magnetic field caused by the at least one object in the surveillance volume, and wherein each of the magnetic sensor modules includes first, second and third magnetometers configured in substantially three orthogonal directions; and a processor associated with the plurality of magnetic sensor modules to process the measured perturbations to determine a location and magnetic signature of the at least one object.

Imaging systems and associated methods are described. According to one aspect, an imaging system includes an antenna array having transmit and receive antennas, the transmit antennas emit electromagnetic energy from a plurality of different positions about a target imaging volume and the receive antennas receive reflections of the electromagnetic energy at the different positions, a transceiver configured to control the emission of the electromagnetic energy and to generate radar data that is indicative of the reflections of the electromagnetic energy received via the receive antennas; and processing circuitry configured to focus the radar data to provide first focused data in a first dimension, to focus the radar data in a second dimension to provide second focused data, and use the second focused data to focus the radar data in a third dimension to provide third focused data comprising an image of the target imaging volume.

A hand-held locating apparatus comprises at least one hand-held locating device for acquiring locating data on objects that are hidden below a surveyed surface and are to be located, and comprises a position sensor for sensing position data of the locating device in relation to the surveyed surface. The locating system includes at least one evaluation device for determining directionally and/or spatially resolved location information from the locating data in a first mode of operation of the locating system without repositioning the locating device in relation to the surveyed surface and for determining at least three-dimensional locating information from the locating data and the position data by assigning locating data to position data in a second mode of operation. Also disclosed is a method for locating objects hidden below a surveyed surface, wherein the at least two modes of operation of the locating system can be selected.