Abstract: Systems, methods, and computer media for calibrating user-mounted devices are provided. An external device capable of providing calibration data to a user-mounted device worn by a user is identified. An identification acknowledgement is received from the external device. A device calibration mode is entered in which calibration data describing the user-mounted device is received by the user-mounted device. The calibration data is based at least in part on sensor data acquired and normalized by the external device. The calibration data is then received. The calibration data includes at least one determined pose or body measurement of the user and a calculated alignment of the user-mounted device relative to the user. The user-mounted device is calibrated using the received calibration data.

Abstract: In a position detection device, an amplitude modulation is executed for AC excitation signals Sc using modulation wave signals. Differential amplifiers execute a voltage conversion of the modulated wave signal Sin, Cos to digital data SIN, COS and transmit them to a microcomputer. The microcomputer multiplies the modulated wave signals SIN, COS with parameters cos ?, sin ?, and executes a subtraction of the multiplied value to obtain an error-correlation value ?. An angle calculations section in the microcomputer receives a detected value ?c obtained by multiplying the error-correlation value ? with a binary detection signal Rd. The binary detection signal Rd corresponds to a positive sign or a negative sign of the signal Sc. It is adjusted that the sampling number of samples of the signal Rd corresponding to a positive value is equal to that corresponding to a negative value during one period of the signal Sc.

Abstract: A fall detection device includes a fall detection circuit to detect a fall by a user and a verification circuit to verify the initial indication of a fall from the fall detection circuit. The device is sized to be worn by the user and includes an orientation sensor to track the orientation of the device relative to one or more axes. The device averages the average inclination values for one or more axes for time periods before, during, and after the fall. A fall is determined to have occurred when differences in the average values of the inclination values exceed threshold values.

Abstract: A head mounted device provides an immersive virtual or augmented reality experience for viewing data and enabling collaboration among multiple users. Rendering images in a virtual or augmented reality system may include capturing an image and spatial data with a body mounted camera and sensor array, receiving an input indicating a first anchor surface, calculating parameters with respect to the body mounted camera and displaying a virtual object such that the virtual object appears anchored to the selected first anchor surface. Further operations may include receiving a second input indicating a second anchor surface within the captured image that is different from the first anchor surface, calculating parameters with respect to the second anchor surface and displaying the virtual object such that the virtual object appears anchored to the selected second anchor surface and moved from the first anchor surface.

Abstract: A method for determining the location of a touch input in an application window on an interactive surface of a display device is described. The application window comprises a canvas configured to display at least a portion of a user interface. The method comprises the following steps. A first location of the touch input associated with a first coordinate space is determined. The first coordinate space is associated with the interactive surface. The touch input is used to emulate a mouse event. A second location of the touch input associated with a second coordinate space is determined in response to the emulated mouse event. The second coordinate space is associated with the user interface. At least one offset parameter is calculated, correlating the first coordinate space with the second coordinate space.

Abstract: The robotic work object cell calibration system includes a work object. The work object emits a pair of beam-projecting lasers acting as a crosshair, intersecting at a tool contact point (TCP). The work object emits four plane-projecting lasers are used to adjust the yaw, pitch, and roll of the robot tool relative to the tool contact point (TCP). The robotic work object cell calibration system provides a calibration system which is simpler, which involves a lower investment cost, which entails lower operating costs than the prior art, and can be used for different robot tools on a shop floor without having to perform a recalibration for each robot tool.

Abstract: Methods, systems, and apparatus for quantifying an individual's frailty level based on inertial sensor data collected from the individual. The quantified frailty level may correspond to and approximate clinical metrics of frailty, such as the Fried frailty index. A linear regression model may be used to output the quantitative frailty value based on input parameters from the inertial sensor data. The linear regression model may be initially generated from the clinically-measured frailty index values of individuals and inertial sensor data collected from them. The inertial sensor data may be collected during, for example, a timed up and go (TUG) test. Two logistic regression models may be used to output a frailty class based on input parameters from the inertial sensor data. A first logistic regression model may distinguish between robust and frail individuals. A second logistic regression model may distinguish between robust and pre-frail individuals.

Abstract: Method and apparatus are provided to determine directional calibration parameters of an object. A method includes: disposing a tracking marker to the object, disposing the object on a calibration tool, rotating the object around its set linear axis while keeping the set linear direction unchanged, determining at least two three-dimensional rotation matrices of the tracking marker via a position tracking apparatus, and using the three-dimensional rotation matrices to determine the directional calibration parameters with the formula of two-point position relationship or rectilinear direction rotation relationship in the three-dimensional space. The action direction of the object is determined based on the determined directional calibration parameters and the current three-dimensional rotation matrix of the tracking marker.

Abstract: A motor drive device inputs two detection signals from a rotation position sensor thereby to detect a rotation position, and controls a voltage to be applied to a motor according to the detected rotation position. The motor drive device has a control unit for outputting a first voltage in a first state in which the square sum of sampling values sampled from the two detection signals is a predetermined value, and outputting a second voltage in a second state in which the square sum is not the predetermined value.

Abstract: According to one embodiment, target tracking device includes track calculator and correction unit. Track calculator calculates a track of a target based on angular measurement of the target measured by a passive sensor. Correction unit sends correction data to the track calculator. Correction unit calculates correction data based on state vector of target input from an external device. Track calculator calculates track for each of a plurality of motion models based on angular measurement and correction data. Track calculator calculates the track of the target based on the track for each of the motion models. Track calculator calculates the track of the target by weighted sum of all tracks for the motion models.

Abstract: Methods and apparatus are provided for calibrating a motion tracking system (100) including a plurality of orientation sensors (102a-103h) attached to a plurality of body segments (104a-105h) of a user (9101). The methods and apparatus receive a first set of orientation signals from a first set of the orientation sensors (102a-102g). The first set of orientation signals associated with a first pair of the body segments (102a, 102f) matching a first set of predetermined positions. The skeleton dimension of the user and the mapping between the body segments and the corresponding attached sensors (102a-103h) are calibrated based on the first set of orientation signals. A first template including the first set of predetermined positions may be used, and the first pair of the body segments (104a, 104f) include the feet of the user.

Abstract: According to one embodiment, target tracking device includes passive processor, active processor, fusion unit and correction unit. Passive processor calculates passive track of target based on passive measurement of target angle measured by passive sensor. Active processor calculates active track of target based on active measurement of target distance and angle measured by active sensor. Fusion unit combines passive track and active track to output combined track. Correction unit calculates correction data based on combined track. Passive processor calculates track of the target for motion models based on passive measurement and correction data and calculates passive track by weighted sum of all tracks for motion models.

Abstract: A storage medium has stored therein a game program that in game processing, controls a correlation between a player object and a non-player object through a virtual surface that is set on the basis of a marker for generating a superimposed image by combining a real world image and a virtual world image. The game program causes a computer of an apparatus, which includes a display device for providing the superimposed image to a user and an imaging section for taking an image of the marker, to operate as predetermined means.

Abstract: A geodetic surveying system, comprising: a first measurement unit and a second measurement unit. Each of the first and the second measurement unit is configured to perform a measurement for acquiring positioning data of the respective measurement unit. The system further comprises a first inclinometer for acquiring inclination data of the first inclinometer which represent a vertical inclination measured at the first measurement unit; and a second inclinometer for acquiring inclination data of the second inclinometer, which represent a vertical inclination measured at the second measuring unit. The geodetic surveying system is configured to determine a relative orientation angle between the first inclinometer and the second inclinometer in a horizontal plane relative to a vertical adjustment of the geodetic surveying system, depending on the inclination data of the first inclinometer and the second inclinometer.

Abstract: A system and a method determine a steering angle of a steering column of a vehicle as a sum of a shifted steering angle and an offset. The steering angle is updated by adjusting the offset in response to detecting incoherence between the steering angle and a lateral vehicle dynamic.

Abstract: The robotic work object cell calibration method includes a work object or emitter. Initially, placing the work object is placed in a selected position on a fixture or work piece on the shop floor. The work object emits a pair of beam-projecting lasers which intersect at a tool contact point and act as a crosshair. The robot tool is manipulated into the tool contact point. The work object emits four plane-projecting lasers which are used to adjust the roll, yaw, and pitch of the robot tool relative to the tool contact point. The robotic work object cell calibration method of the present invention increases the accuracy of the off-line programming and decreases robot teaching time.

Abstract: A sensor information acquisition section acquires angular velocity information (GX, GY, GZ) around three axes acquired by three angular velocity sensors, and acceleration information (AX, AY, AZ) in three axial directions acquired by three acceleration sensors. A posture information calculation section calculates a posture angle and position coordinates in a virtual three-dimensional space based on the angular velocity information (GX, GY, GZ) and the acceleration information (AX, AY, AZ). The posture information calculation section calculates a fixed coordinate system velocity vector based on an inertial coordinate system acceleration vector (A) obtained from the acceleration information (AX, AY, AZ), and calculates position coordinates in a virtual three-dimensional space corresponding to the fixed coordinate system velocity vector.

Abstract: The present invention relates to a model based positioning system that includes a positioning device having at least one transmitter configured to be in a tracking environment, e.g. inserted into a body, a receiver having a plurality of receiver elements arranged outside the tracking environment, a control unit configured to measure amplitude and/or phase information of a signal transmitted from the at least one transmitter and received at each receiving element, and a memory unit M for storing a model for each receiving element. The control unit is also configured to estimate the position P of the positioning device by comparing the model for each receiving element with the measured received signal for each receiving element.

Abstract: A method for calibrating measurement instruments of an optronic system in motion, with positions P1, P2, . . . , Pi, . . . , comprises: a device for acquiring images of a scene comprising a fixed object G0; and means for tracking the fixed object G0 during the acquisition of these images; means for obtaining the positions P1, P2, . . . ; at least one instrument for measuring the distance and/or an instrument for measuring angles of orientation and/or of attitude between this measurement instrument and the fixed object G0, according to a line of sight LoS. It comprises the following steps: acquisition at instants t1, t2, . . . of at least two images, each image being acquired on the basis of different positions P1, P2, . . . of the system, the fixed object G0 being sighted in each image, but its position being unknown; acquisition at the instants t?1, t?2, . . . of measurements of distance and/or of angle; synchronization of the measurements of distance and/or of angle with the positions P1, P2, . . .

Abstract: Embodiments of the present invention include an occupancy sensing unit configured to monitor an environment illuminated by a lighting fixture. An inventive occupancy sensing unit may include an occupancy sensor to detect radiation indicative of at least one occupancy event in the environment illuminated by the lighting fixture according to sensing parameters. The occupancy sensor can be coupled to a memory that logs sensor data, which represent the occupancy events, provided by the occupancy sensor. A processor coupled to the memory performs an analysis of the sensor data logged in the memory and adjusts the sensing parameters of the occupancy sensor based on the analysis.

Abstract: Systems and methods to calculate ballistic solutions for use with a projectile launching device are disclosed herein. In some embodiments, the system includes a telescopic sight assembly for viewing a target, wherein the telescopic sight assembly comprises at least one display device for displaying information, a processor, a memory, and a data input device, wherein the system for use with a projectile launching device to calculate ballistic solutions is configured to perform passive target ranging. In some embodiments, the system includes a telescopic sight assembly for viewing a target, at least one display device for displaying information to a user within the field-of-view of the telescopic sight assembly, a processor configured to receive user input data associated with one or more actual projectile impact locations as observed by the user, a memory, and a data input device, wherein at least one display device displays a calculated projectile impact location.

Abstract: A portable articulated arm coordinate measurement machine can include a base, a manually positionable articulated arm portion having opposed first and second ends, the arm portion including a plurality of connected arm segments, an electronic circuit that receives the position signals from the transducers, a first inclinometer coupled to the base, wherein the inclinometer is configured to produce a first electrical signal responsive to an angle of tilt of the base and an electrical system configured to record a first reading of the first inclinometer and a second reading of the first inclinometer, wherein the first reading is in response to at least one of a first force applied to the base and a third force applied to the mounting structure, wherein the second reading is in response to at least one of a second force applied to the base and a fourth force applied to the mounting structure.

Abstract: A controlling unit and a method of correcting an actual limit value of a sensor signal is described, wherein above or below the limit value a specific state of the sensor is recognized, the method including the steps of determining a new limit value of the sensor, determining a stability criteria to decide whether the actual limit value is corrected with said new limit value and approaching the actual limit value to the new limit value when the conditions are fulfilled to correct the actual limit value for said sensor.

Abstract: The present invention relates to resolver calibration for permanent magnet synchronous motor. According to embodiments of the present invention, the high frequency rotating voltage vector is generated and injected into a resolver associated with a permanent magnet synchronous motor (PMSM). Due to the saliency effect, when a reference point is detected in a phase current, the rotor position of the PMSM is known. At this point, by acquiring the resolver position, the resolver offset may be accurately determined for calibration. According to embodiments of the present invention, the resolver offset may be accurately determined and calibrated without increasing device dimension and cost. Respective methods, apparatuses, systems, and computer products are disclosed.

Abstract: The present invention provides a measurement apparatus which includes a probe having a leading edge portion configured to come into contact with a surface to be measured and a holding portion configured to hold the leading edge portion, and measures a shape of the surface by scanning the probe relative to the surface in a state in which the leading edge portion and the surface are in contact, comprising a processing unit configured to correct measurement data at a measurement point on the surface based on data of a scanning distance of the probe and information about abrasion of the leading edge portion caused by scanning of the probe.

Abstract: Phase sensitive X-ray imaging methods provide substantially increased contrast over conventional absorption based imaging, and therefore new and otherwise inaccessible information. The use of gratings as optical elements in hard X-ray phase imaging overcomes some of the problems impairing the wider use of phase contrast in X-ray radiography and tomography. To separate the phase information from other contributions detected with a grating interferometer, a phase-stepping approach has been considered, which implies the acquisition of multiple radiographic projections. Here, an innovative, highly sensitive X-ray tomographic phase contrast imaging approach is presented based on grating interferometry, which extracts the phase contrast signal without the need of phase stepping. Compared to the existing phase step approach, the main advantage of this new method dubbed “reverse projection” is the significantly reduced delivered dose, without degradation of the image quality.

Abstract: A calibration jig allowing simple and repeatable calibration of a probe optical tomographic apparatus is disclosed. The jig includes a holding member removably attachable to an attachment section of the apparatus and a reflective surface held by the holding member. The reflective surface reflects measurement light emitted from an emitting section of the attachment section and directs reflected light back to the emitting section. If a probe of the apparatus is covered with a sheath, the jig may include a light transmitting member, which generates the same dispersion as dispersion at the sheath, between the emitting section and the reflective surface. The reflective surface may be a single reflective surface disposed within an area corresponding to twice a coherence length of the laser light with a zero path position of the reflective surface being the center of the area.

Abstract: Systems and methods are operable maintain a proscribed Self Separation distance between an unmanned aircraft system (UAS) and an object. In an example system, consecutive intruder aircraft locations relative to corresponding locations of a self aircraft are determined, wherein the determining is based on current velocities of the intruder aircraft and the self aircraft, and wherein the determining is based on current flight paths of the intruder aircraft and the self aircraft. At least one evasive maneuver for the self aircraft is computed using a processing system based on the determined consecutive intruder aircraft locations relative to the corresponding locations of the self aircraft.

Abstract: A calibration system includes a channel block (102) having a plurality of channels (104) formed therein. The channels are configured to correspond to locations where treatment devices are inserted for treatment of a patient. The channels are dimensioned to restrict motion of the treatment devices. A tracking system (128) is configured to monitor a position of a treatment device (108) inserted in one or more of the channels. The tracking system is configured to generate tracking data for the at least one treatment device for comparison with an expected position for the treatment device.

Abstract: An apparatus includes a robotic positioning device and a locating mat. The locating mat includes a location pattern and can be disposed on a floor at a desired position relative to a movable cradle of an imaging system. The robotic positioning device is configured to be disposed, at least partially, above the locating mat. The robotic positioning device includes a docking device that includes an optical device and a guide manipulator supported on the docking device. The guide manipulator can be positioned relative to the movable cradle based, at least partially, on image data associated with the optical device and the location pattern of the locating mat. The guide manipulator can position an instrument guide relative to a patient disposed on the movable cradle.

Abstract: The disclosure relates to a method of detecting an object using a detection signal supplied by a proximity sensor. The method comprises the steps of generating a reference signal by filtering the value of the detection signal, defining a first detection threshold, and going from an object non-detecting state to an object detecting state when the value of the detection signal becomes greater than the first detection threshold. When the value of the detection signal becomes greater than the first detection threshold, the value of the reference signal is readjusted in a manner such that the value of the detection signal again becomes less than or respectively greater than, the first detection threshold.

Abstract: Embodiments provide a method for determining sine or cosine correction values for an error compensation in an angle sensor. At least three pairs of values for at least three rotation angle values of an angle sensor are detected. Each pair of values includes a rotation angle value and an associated measurement signal value. The associated measurement signal value includes a sine component and a cosine component. The sine correction value for an offset error of the sine components of the measurement signal values is determined by adding the sine components of two detected measurement signal values. The cosine correction value for an offset error of the cosine components of the measurement signal values is determined by adding the cosine components of two detected measurement signal values. The sine correction value for the offset error of the sine components or the cosine correction value for the offset error of the cosine components is provided for error compensation.

Abstract: A system comprises an inertial measurement unit comprising one or more gyroscopes configured to measure angular velocity about a respective one of three independent axes and one or more accelerometers configured to measure specific force along a respective one of the three independent axes; a magnetometer configured to measure strength of a local magnetic field along each of the three independent axes; and a processing device coupled to the inertial measurement unit and the magnetometer; the processing device configured to compute kinematic state data for the system based on measurements received from the magnetometer and the inertial measurement unit. The processing device is further configured to calculate magnetometer measurement calibration parameters using a first technique when position data is unavailable and to calculate magnetometer measurement calibration parameters using a second technique when position data is available.

Abstract: In one embodiment, a method includes receiving real-time sensor data from N sensors on the computing device. The real-time sensor data corresponds to a transition in a physical state of the computing device caused by a user of the computing device. The method also includes applying a linear function to the real-time sensor data from each of the N sensors; determining a vector based on an N-tuple comprising the derivatives; comparing the vector with a pre-determined hyperplane with N?1 dimensions; and determining based on the comparison whether the transition is an event corresponding to any of one or more pre-determined imminent uses of the computing device by the user or a non-event not corresponding to any of the pre-determined imminent uses of the computing device by the user.

Abstract: Systems and methods for reducing error detection latency in LPV approaches are provided. In certain embodiments, a method for navigational guidance includes calibrating inertial measurements acquired from an inertial navigation system with satellite-based augmentation system position measurements acquired from a satellite-based augmentation system to create corrected inertial navigation system positions. The method also includes determining whether the satellite-based augmentation system experienced a fault when the inertial measurements were calibrated with the satellite-based augmentation system position measurements. Further, when the satellite-based augmentation system did not experience a fault, the method includes monitoring the satellite-based augmentation system navigation position measurements based on the corrected inertial navigation system positions.

Abstract: A method for detecting a human's steps and estimating the horizontal translation direction and scaling of the resulting motion relative to an inertial sensor is described. When a pedestrian takes a sequence of steps the displacement can be decomposed into a sequence of rotations and translations over each step. A translation is the change in the location of pedestrian's center of mass and a rotation is the change along z-axis of the pedestrian's orientation. A translation can be described by a vector and a rotation by an angle.

Abstract: Aspects of the present disclosure provide techniques for determining floors at a geographic location using barometric air pressure sensors in a mobile phone. An exemplary method includes identifying a first height associated with a location based on a client device. The first height indicates an entry level of the client device at the location. Using information regarding an amount of outside air pressure at the location, a pressure sensor in the client device is calibrated. A pressure offset for the location is calculated. The pressure offset identifies a difference between air pressure readings inside the location and the amount of outside air pressure at the location. Using the calibrated pressure sensor, a second height associated with the location is determined based on readings from the calibrated pressure sensor and the pressure offset. The second height indicates a different level at the location that the client device is currently on.

Abstract: The techniques described herein are directed to receiving parameters directed to correcting spatial error and/or jitter associated with an interaction device connected to a computing device. In some instances, the parameters are encrypted parameters that may be decrypted and consumed to correct the spatial error and/or the jitter associated with the interaction device. For instance, the parameters may provide an adjustment to one or more reported positions of input received from a detection area of the interaction device, so that a display position more accurately reflects, based on the adjustment, an actual position of input on the detection area of the interaction device.

Abstract: A system has at least one sensor and a controller communicatively coupled to the sensor. The system further has logic configured to calculate a calibration value based upon an initial state of the sensor and store the calibration value in memory.

Abstract: There is provided a position information correction device including an input point acquisition section which acquires position information of an input point specified by an operating object, a direction detection section which detects a movement direction of the operating object based on displacement of the position information acquired by the input point acquisition section for each input point, a determination section which takes a majority vote of the movement directions of past input points acquired by the input point acquisition section in the past, and determines the movement direction of the operating object with respect to a current input point acquired by the input point acquisition section at a current time point, and a position information correction section which, when the movement direction detected by the direction detection section differs from the movement direction determined by the determination section, corrects position information of the current input point.

Abstract: An excavation control system includes a working unit having a bucket, a designed landform data storage part storing designed landform data, a bucket position data generation part that generates bucket position data, a designed surface data generation part, and an excavation limit control part. The designed surface data generation part generates superior and subordinate designed surface data based on the designed landform and bucket position data. The superior designed surface data indicates a superior designed surface corresponding to a prescribed position on the bucket. The subordinate designed surface data indicates a plurality of subordinate designed surfaces linked to the superior designed surface. The designed surface data generation part generates shape data based on the superior and subordinate designed surface data. The shape data indicates shapes of the superior designed surface and the plurality of subordinate designed surfaces.

Abstract: The present invention includes steps of, determining a search starting position; setting a center position, and a first position and a second position with a distance provided therebetween; obtaining a measurement point group including measurement points of the center position, the first position, and the second position; and determining a measurement point closest to the tip portion in the measurement point group based on positions of the measurement points in a second direction and selecting a position of the measurement point in a first direction as a selected position. When the measurement point group is obtained initially after the determination of the search starting position, the search starting position is set as the center position; and when the measurement point group is obtained after the selection of the selected position, the selected position is set as the center position. The distance is narrowed for every selection of the selected position.

Abstract: Navigation units, systems, and methods for use in the context of personal navigation, and associated methods for initialization, navigation, assistance, and correction, all in the field of inertial navigation and related applications. The inertial navigation units, systems, and methods of the invention utilize multiple accelerometers to gather specific force data for improvement of the initialization, navigation, assistance, or corrective processes.

Abstract: Disclosed are an apparatus and method for adaptively compensating a position error of a resolver. The apparatus adaptively estimating a position error contained in position information of a rotor of a motor, which is digitalized by a resolver-digital converter, and subtracting the estimated position error from the measured position information of the rotor, thereby calculating compensated position information. A regression equation and a recursive least square method applied to the regression equation are used for the adaptive estimation of the position information.

Abstract: A computer-implemented augmented reality method includes obtaining an image acquired by a computing device running an augmented reality application, identifying image characterizing data in the obtained image, the data identifying characteristic points in the image, comparing the image characterizing data with image characterizing data for a plurality of geo-coded images stored by a computer server system, identifying locations of items in the obtained image using the comparison, and providing, for display on the computing device at the identified locations, data for textual or graphical annotations that correspond to each of the items in the obtained image, and formatted to be displayed with the obtained image or a subsequently acquired image.

Abstract: The invention relates to a system (1) comprising a deformable surface (2) and a first and a second sensor (C1, C2) designed to provide a first and a second measurement signal (S1, S2) intended to be collected by a processing circuit (12), said system (1) comprising first and second measurement paths (V1, V2) for collecting the first and second measurement signals (S1, S2), said system (1) being characterised in that it comprises a common calibration member (20) for simultaneously injecting into the first and second measurement paths (V1, V2) a calibration signal (SE), said common calibration member (20) being designed so that the image signals (S?1, S?2, S?n) restored via said measurement paths (V1, V2, Vn) are independent of said movable surface (2). Deformable movable surface systems, of the deformable mirror type.

Abstract: Disclosed is a sensor that can accurately detect displacement and prevents the phenomenon of a contact section between a shaft member and a sliding element receiver being shifted. The sensor comprising: a case having a through hole; a resistance substrate fixed at an inside of said case; a shaft member having a first end portion which is one end of the shaft member placed within said case and a second end portion which is other end of the shaft member exposed to an outside of said case from said through hole, said shaft member being placed at said through hole in a movable manner in an axial direction; and a sliding element receiver having a bearing end contacting with said second end portion of said shaft member, and attached with a brush sliding together with said resistance substrate, said sliding element receiver being capable of moving relatively against said resistance substrate with said shaft member. A hemispherical end face is formed at said first end portion.

Abstract: A method for creating an artifact for use with an optical three-dimensional measuring system includes steps of: (a) providing an artifact that comprises an inspection surface, which artifact is configured to be scanned by a non-contact sensor included in the optical three-dimensional measuring system, which artifact comprises at least one of a substantially spherical body and a turbine engine component, and which inspection surface comprises a surface of one of the substantially spherical body and the turbine engine component; (b) heating the artifact to a predetermined temperature; and (c) coating the inspection surface of the heated artifact with an approximately uniform coating of dry film lubricant.

Abstract: Systems and methods for estimating a height of a mobile device are described. A reference pressure estimate is generated using atmospheric data from one or more reference locations. Various approaches for determining the reference pressure estimate are described. The reference pressure estimate is used, along with a pressure measurement at a position of a mobile device, to estimate the height of the mobile device.

Abstract: An angle detecting apparatus is obtained. The angle detecting apparatus is capable of correcting an electrical angle frequency component of an angle signal contained angle signal. An angle detecting apparatus computes an angle signal of a rotary machine from a sine signal and a cosine signal obtained from the angle signal. Offset correction values for the sine signal and the cosine signal are computed from the angle signal. The computed offset correction value for the sine signal is added to the sine signal to correct the sine signal, and the computed offset correction value for the cosine signal is added to the cosine signal to correct the cosine signal.