Aspects of the subject disclosure may include, for example, obtaining a first plurality of circumference measurements, each of the first plurality of circumference measurements corresponding to a first circumference around a limb of a person at a respective one of a plurality of locations of the limb, each of the first plurality of circumference measurements being obtained from a respective one of a plurality of elastic measurement elements that is positioned at a respective one of the locations; determining, based upon the first plurality of circumference measurements, a first geometric profile along a length of the limb; and outputting data representing the first geometric profile. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, obtaining a first plurality of circumference measurements, each of the first plurality of circumference measurements corresponding to a first circumference around a limb of a person at a respective one of a plurality of locations of the limb, each of the first plurality of circumference measurements being obtained from a respective one of a plurality of elastic measurement elements that is positioned at a respective one of the locations; determining, based upon the first plurality of circumference measurements, a first geometric profile along a length of the limb; and outputting data representing the first geometric profile. Other embodiments are disclosed.

In the straightening of radial run-out faults or linearity faults on elongate workpieces having at least one toothed region having peaks and troughs of the teeth of said toothed region, such as on toothed shafts or toothed racks, for ascertaining deviations from the ideally straight workpiece, the locations of the surfaces of the not yet straightened workpiece that form a reference plane are scanned at least at points or in portions on or in the region on the active reference circle or pitch circle, respectively, of the toothing that lies between the peaks and troughs of the teeth. The resulting measured items of data are utilized by the straightening machine such that a workpiece that is as ideally straight as possible at least in the toothed region is achieved by the straightening. The elevated locations of the tooth heads of the toothed region that form the peaks of the teeth and the elevated locations of neighboring tooth surfaces that lie in the reference plane are detected, and the height differentials of the elevated locations of the tooth heads in relation to the elevated locations of neighboring tooth surfaces that lie in the reference plane are ascertained. The height differentials are utilized by the straightening machine as corrective measured items of data such that said height differentials are considered when straightening the workpiece so as to form a workpiece that is as ideally straight as possible in the reference plane.

An unmanned aerial vehicle (UAV) autonomously perching on a curved surface from a starting position is provided. The UAV includes: a 3D depth camera configured to capture and output 3D point clouds of scenes from the UAV including the curved surface; a 2D LIDAR system configured to capture and output 2D slices of the scenes; and a control circuit. The control circuit is configured to: control the depth camera and the LIDAR system to capture the 3D point clouds and the 2D slices, respectively, of the scenes; input the captured 3D point clouds from the depth camera and the captured 2D slices from the LIDAR system; autonomously detect and localize the curved surface using the captured 3D point clouds and 2D slices; and autonomously direct the UAV from the starting position to a landing position on the curved surface based on the autonomous detection and localization of the curved surface.

A method of estimating a topography of at least first and second parts of a body may involve: causing at least one processor circuit to receive at least one signal representing at least one measurement of deformation of at least a portion of the body; causing the at least one processor circuit to associate the deformation with relative positions of at least the first and second parts of the body; and causing the at least one processor circuit to produce at least one output signal representing the relative positions of at least the first and second parts of the body. Systems are also disclosed.

A detection device includes a substrate, wherein the substrate is provided with a positive electrode and a negative electrode, an electric field generating circuit that supplies a current or voltage between the positive electrode and the negative electrode to generate an electric field from a first side of the substrate, a guard electrode that is located farther from the first surface than the positive electrode and the negative electrode, and that faces at least one of the positive electrode and the negative electrode via an insulator, a potential adjustment circuit that makes i) the potential applied to the electrode corresponding to the guard electrode among the positive electrode and the negative electrode and ii) the potential of the guard electrode the same, and a semiconductor element that outputs an electric field intensity detection value corresponding to the electric field intensity between the positive electrode and the negative electrode.

A semiconductor equipment architecture WGT for wafer shape and flatness measurement is disclosed. The semiconductor equipment architecture WGT includes a reflective air-bearing chuck and a hybrid wafer thickness gauge. Also disclosed are the corresponding methods of measuring wafer shape and flatness using the architecture, the air-bearing chuck and the hybrid wafer thickness gauge.

Systems, methods, and sensor devices for fluid conduit inspection using passive magnetometry are provided. A method of inspecting a fluid conduit using passive magnetometry includes collecting magnetic flux data from inside the fluid conduit without actively magnetizing the fluid conduit, the magnetic flux data representing a residual magnetization of the fluid conduit, and identifying a conduit condition for the fluid conduit using the magnetic flux data. A computer system includes a memory for storing magnetic flux data collected from inside the fluid conduit without active magnetization of the fluid conduit, the magnetic flux data representing a residual magnetization of the fluid conduit; and a processor in communication with the memory and configured to generate an electronic representation of a conduit condition for the fluid conduit based on the magnetic flux data, wherein the electronic representation is stored in the memory.

A roundness measuring device includes an annular ring, and a plurality of displacement sensors (comparative length measuring devices) provided on the ring at predetermined intervals. The displacement sensors are arranged such that lines along which measurement axes of the displacement sensors extend intersect at a single point.

A method, system, and computer program product is provided for tracking the shape of a surface. The method includes generating a first plurality of surface models based on the surface, each surface model associated with surface parameter values and representing a different shape, determining an estimated position of the plurality of RF transponders on each surface model of the first plurality of surface models, communicating at least one activation signal to the plurality of RF transponders arranged on the surface, the surface comprising an unknown shape, receiving a plurality of response signals from at least a subset of the plurality of RF transponders, determining radio environment parameters for each surface model of the first plurality of surface models, and determining at least one selected surface model of the first plurality of surface models.