Abstract: A simulation apparatus configured to perform a simulation of an arrangement of an energy recovery apparatus capable of recovering an accumulated energy amount of an energy accumulation apparatus is configured to: (a) output a first output amount which is an output amount related to a position at which the energy recovery apparatus is to be arranged; or (b) output a second output amount which is an output amount used for determining the position at which the energy recovery apparatus is to be arranged, based on at least one of: (i) a first relational expression; and (ii) a second relational expression.

Abstract: The present technology improves points-of-interest (POIs) in applications by the gathering and use of data available from various sources to improve metadata of POIs in applications (e.g., map applications) or any other metadata or information that may be of interest to a user regarding any given POI. The present technology resolves transactions to POIs or Brands (in a map application, for example) and improves, updates, creates, and removes POls/Brands. The present technology can also gain a clear name, granular and correct categorization, a URL, phone/chat contact info, etc. of the transactions.

Abstract: Systems, methods, and devices are disclosed for synchronizing map updates for a navigating autonomous vehicle. A management service on a managing node can receive an update to a portion of a first map, where a limited visibility map, which is a subset of the first map, can be determined based on a geographical area around an autonomous vehicle navigating a route. The limited visibility map can be synchronized among all the nodes while the autonomous vehicle is using the limited visibility map by the management service delivering, to a plurality of downstream nodes, the update to the limited visibility map when the update does not modify a portion of the limited visibility map, and by bypassing, to the plurality of downstream nodes, the update to the limited visibility map when the update modifies a portion of the limited visibility map.

Abstract: A method and a device for determining motion of a device are described. In an example, a plurality of points-of-interest (POIs) are identified in a pedestrian area of an indoor space and, with each POI, a probabilistic representation of motion transition of a device from the POI is associated. The probabilistic representation of motion transition is indicative of a probability distribution of likely directions of motion that the device can exhibit from the POI. Further, a map of the indoor space is generated based on the association and the map is usable for ascertaining motion of the device in the indoor space.

Abstract: A method for recognizing an erroneous map of an environment. The map being obtained by merging a first map and a second map which are based on a SLAM graph and on data sets with information about the environment. The method includes: providing an updated second map obtained by merging the first map and the second map and updated after the merge; determining whether the updated second map is erroneous, including: performing a comparison of first map data of the first map from the first acquisition period to second map data from the second acquisition period, determining a degree of matching between the second map data and the first map data, determining that the updated second map is erroneous if the degree of matching fulfills a specified criterion; and providing, if it has been determined that the updated second map is erroneous, information that the map is erroneous.

Abstract: A method for updating a digital map. The method includes: receiving motor vehicle data signals representing respective motor vehicle data of a plurality of motor vehicles, and updating in parallel a plurality of spatially separated map segments of the digital map based on the motor vehicle data in order to update the digital map. A device, a computer program, and a machine-readable storage medium, are also described.

Abstract: A method for determining objects in an environment with the aid of SLAM and a mobile device in the environment, which has at least one sensor for acquiring object and/or environment information. The method includes: providing sensor data, carrying out an object detection in order to obtain first object datasets for detected objects; carrying out object tracking for a new SLAM dataset, including allocating objects detected with the aid of the object detection to real objects in order to obtain second object datasets or real objects to be considered in the SLAM graph.

Abstract: Aspects presented herein may improve the performance of positioning devices by enabling the positioning devices to utilize transformed map data with limited third party knowledge of the transformation. Aspects presented herein may enable a positioning device to make the map data from another coordinate system usable for positioning algorithms without knowledge of the transformation. In one aspect, a UE transmits a request for map data based on a first set of coordinates in a first coordinate system. The UE receives the map data based on a second set of coordinates in a second coordinate system, where the first set of coordinates in the first coordinate system is distinct from the second set of coordinates in the second coordinate system. The UE calculates a set of relative distances between the second set of coordinates and one or more objects corresponding to the map data.

Abstract: A system and method for publishing AI map data to an end user at a specified location includes a computing device. The computing device displays a map portion of an area on a digital display. The computing device receives at least one selection by a primary user for a portion of the area represented by the map, creating at least one geofence, and the computing device may attach digital media to the at least one first geofence by the primary user. The map data is retrievable from a mobile computing device of an end user when the mobile computing device is within a location corresponding to the at least one geofence.

Abstract: An appliance operation signal processing system comprises: an input for receiving an appliance operation signal, the appliance operation signal comprising information relating to operation of an appliance; an output for outputting information relating to a recall status of the appliance; and a processor configured to: monitor an input appliance operation signal for a change in magnitude; if a change is detected: identify a component event corresponding to the change; determine whether the component event is a designated sequence start component event; if the component event is determined to be a designated sequence start component event: extract one or more features from the input appliance operation signal between the sequence start component event and a sequence stop point; determine information relating to a recall status of the appliance by inputting the one or more features into a first algorithm.

Abstract: The inventions generally relates to an apparatus and method (hardware and operating modes) for a DUAL TRANSCEIVER BOARD MODULE (DTBM) that can be used as an Automatic Meter Reading device (AMR/AMI) for data generators such as utility meters. The DTBM comprises a plurality of transmitter technologies/boards that communication over a plurality of networks such as a public network, cellular network, common carrier network and a third-party network. The apparatus comprises a dual or milti transceiver board set and the methods related to using such an apparatus.

Abstract: A proximity sensor system can include a target assembly having one or more first targets comprising a first material having first magnetic permeability and one or more second targets comprising a second material having a second magnetic permeability. The system can include 5 an inductive proximity sensor positioned relative to the target assembly to sense an inductance of the target assembly. The inductive proximity sensor and/or the target assembly are configured to move relative to the other.

Abstract: An inductive position sensor includes (i) a coupling element which can be arranged on a movable element, (ii) at least one sensor unit for detecting a position of the coupling element, the sensor unit having at least one controllable transmitter coil for generating electromagnetic waves and at least one receiver coil for detecting the electromagnetic waves generated by the transmitter coil and influenced by the coupling element, and (iii) a printed circuit board having a plurality of layers. The coils of the sensor unit are formed on the printed circuit board. The transmitter coil and the receiver coil are distributed on the layers of the printed circuit board in such a way that at least some sections of the transmitter coil are axially opposite the receiver coil with respect to an axis oriented perpendicularly to the printed circuit board.

Abstract: Methods and apparatuses to obtain increased performance and differentiation for an inductive position sensor through non-disruptive placement of multiloop coil interconnects are disclosed. In a particular embodiment, a sense element includes at least one transmit coil; a first receive coil that includes a first plurality of arrayed loops, wherein two or more of the first plurality of arrayed loops are phase blended; and a first plurality of interconnects, each of the first plurality of interconnects connecting two of the first plurality of arrayed loops, wherein the first plurality of interconnects is disposed outside of a sensing area of the sense element.

Abstract: Provided are optical-sensing demodulation module and optical-sensing system. Optical-sensing demodulation module includes: package housing, functional circuit, optical receiving assembly, and optical transmitting assembly. The first side surface of the package housing is provided with first fiber optic interface and second fiber optic interface. The second side surface is provided with an electrical interface. The functional circuit is connected with the electrical interface. The optical receiving assembly is connected with the first fiber optic interface and the functional circuit. The optical transmitting assembly is connected with the second fiber optic interface and the functional circuit. The functional circuit is provided near the first side surface. The optical receiving assembly and optical transmitting assembly are both provided near the second side surface.

Abstract: A method of mounting a rotary scale member on a part, the rotary scale member including a body on which a series of position features defining a scale is provided, and at least one mounting flexure configured to engage the part, the method including: force-fitting the rotary scale member and the part together, whereby the at least one flexure is displaced by the part and thereby urged via a radial reaction force into engagement with the part so as to form a friction fit with the part such that the body of the rotary scale member self-locates at an initial default radial location with respect to the part; and tweaking the radial location of the body relative to the part away from its initial default radial location to a new radial location.

Abstract: [Object] To provide a sensor module and a method for producing the sensor module, the sensor module making it possible to improve a degree of freedom in design, to facilitate the operation, and to reduce costs by reducing the number of components. [Solving Means] A sensor module according to an embodiment of the present technology includes a first member, a second member, a third member, and a sensor element. The first member is made of a synthetic resin material that has absorptive properties with respect to first laser light. The second member is made of a synthetic resin material that has transmissive properties with respect to second laser light of a wavelength that is different from a wavelength of the first laser light.

Abstract: A housing for a measuring instrument comprising a housing part, a cover connectable to the housing part in a detachable manner and by means of which a housing opening of the housing part is closable, and a sealing element. The housing part has a central axis, which coincides congruently with a central axis of the cover when closed. The cover has at least one sealing surface on which the sealing element comes to rest at least when the housing part is completely closed. The housing part has at least one sealing surface on which the sealing element rests when the housing part is closed with the cover. A surface line of the sealing surface of the housing part and/or a surface line of the sealing surface of the cover are/is rotated with respect to the central axis, at least when the housing part is completely closed.

Abstract: A sensor fixing structure, a wearable device and a hot melt device are disclosed. The sensor fixing structure comprises a bracket and a sensor structure. A connecting arm is projectingly provided on the bracket. The connecting arm is a hot melt stake. The sensor structure is covered by the bracket. The connecting arm comprises a connecting section and a holding section. One end of the connecting section is connected to the bracket; the other end of the connecting section is connected to the holding section. The holding section is located at a side of the sensor structure that faces away from the bracket, and the sensor structure is held by the holding section to the bracket. The connecting arm forms the holding section by hot melt processing. The packaging effect of the sensor fixing structure is good, and its overall volume is small.

Abstract: Removable sensor coupling systems and methods are provided. The system may include a spring-loaded reel having a reel shaft that may be removably coupled to the sensor shaft of a rotating sensor. The sensor may be configured to measure an amount of rotation of the sensor shaft responsive to rotation of the spring-loaded reel via the reel shaft. The reel shaft may have a lumen comprising a predefined geometry, and the sensor shaft may have a geometry corresponding to the predefined geometry of the lumen of the reel shaft such that, when disposed within the lumen of the reel shaft, the sensor shaft cannot rotate relative to the reel shaft. Accordingly, the sensor may be removed from the spring-loaded reel for inspection and or repair without having to disassemble the entire sensor coupling system.

Abstract: Disclosed is a flowmeter having a body with a low flow module and a high flow module. The low flow module and the high flow module are in fluid connection via an intermediate chamber. The low flow module includes a mobile piston whose position depends on the flow to be measured when it is lower than a certain threshold value. The high flow module has a paddle wheel adapted to measure higher flow rates.

Abstract: An apparatus for use in measuring a property of a fluid and a method of measuring a property of a fluid in a conduit. The apparatus is for use in measuring a property of a fluid, the apparatus comprising: a conduit comprising an inlet through which fluid can enter the conduit; a movable member retained within the conduit, the movable member configured to move in accordance with the property of the fluid in the conduit; and a magnetic field generating unit for generating one or more magnetic fields in the conduit, an interaction between the movable member and the one or more magnetic fields being detectable via the magnetic field generating unit, to measure the property.

Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A total flow rate of the multiphase fluid is determined at least based on the measured differential pressures. In some cases, flow rates of each of the phases of the multiphase fluid can be determined at least based on the measured differential pressures.

Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A mixture density of the multiphase fluid is determined at least based on the measured differential pressures. A total flow rate of the multiphase fluid is determined at least based on the measured differential pressures. In some cases, flow rates of each of the phases of the multiphase fluid can be determined at least based on the measured differential pressures.

Abstract: A measurement device includes a light emitter, a light receiver, and a computation processor. The light emitter irradiates, with light, a fluid of an irradiation target. The light receiver receives coherent light scattered by the irradiation target and outputs a signal corresponding to an intensity of the coherent light. The computation processor generates a frequency spectrum for a temporal change in a signal strength and calculates, based on the frequency spectrum, a calculation value for a flow state of the fluid flowing in the irradiation target. The computation processor generates a first frequency spectrum with the fluid in a first flow state, generates a second frequency spectrum with the fluid in a second flow state in which the fluid has a flow rate lower than in the first flow state, and calculates a usable frequency range based on a comparison between the first frequency spectrum and the second frequency spectrum.

Abstract: A physical quantity detection device for reducing an influence of a sound wave generated in a turbocharger and suppressing a decrease in detection accuracy of a physical quantity including a flow rate of gas. The device detects a physical quantity of air from an intake passage of an engine equipped with a turbocharger. The physical device includes a sub-passage that takes in part of air flowing from an upstream to a downstream side of the intake passage along a first direction, and a flow rate detection unit that detects a flow rate of the air taken in the sub-passage. The sub-passage includes an inlet that opens toward the upstream side in the first direction, an outlet that opens toward the downstream side in the first direction, and an attenuation chamber that attenuates a sound wave propagating from the turbocharger to an inside of the outlet.

Abstract: Provided is a thermal type flowmeter including: a resin channel member; a plate member defining, together with the channel member, a measuring channel used for measuring a liquid flow rate; and a sensor unit having a heating resistor that transfers heat to the plate member and a temperature detecting resistor that determines a temperature of the plate member. The channel member includes a flat surface in which a first groove is formed, an inflow channel having a circular cross section connected to one end in axis direction along the axis of the first groove, and an outflow channel having a circular cross section connected to the other end in the axis direction of the first groove, and inner diameters of positions of the flat surface at which the inflow channel and the outflow channel are opened, respectively, are larger than the width of the first groove.

Abstract: A method may include receiving power information from an information handling resource regarding an amount of electrical power consumed by the information handling resource, receiving first temperature information from a first temperature sensor regarding a first temperature, receiving second temperature information from the second temperature sensor regarding a second temperature, and based on the power information, the first temperature information, and the second temperature information, estimating a fluid flow rate of the liquid coolant through the liquid cooling system.

Abstract: A process monitoring device includes: a measuring tube module having at least one measuring tube through which a medium can flow; a receptacle module having a receptacle, wherein the measuring tube module can be inserted into the receptacle, wherein the measuring tube module can be mechanically separably connected to the receptacle module; and a system for biotechnological applications, wherein the system has a housing, wherein the housing has a housing wall, which delimits a housing interior, wherein the housing wall has a cover, wherein the cover has an opening, wherein the receptacle module, in particular the receptacle, extends through the opening into the housing interior.

Abstract: A sensor includes an oscillator having a measuring tube for a medium, an exciter array having two exciter assemblies, an inlet-side and an outlet-side sensor array, and a measuring and operating circuit for driving the exciter array and detecting the sensor arrays. A first of the exciter assemblies is secured to a measuring tube, and the measuring tube is intended to be excited to vibrate in relation to a second of the exciter assemblies. A center of gravity of the first exciter assembly lies in a measuring tube transverse plane in relation to which the measuring tube runs mirror-symmetrically. The exciter array comprises an electrodynamic exciter and a compensating mass, where the electrodynamic exciter is designed to exert an exciter force, which acts between the first and the second exciter assembly, on the measuring tube. The effective center of the exciter force is located outside the measuring tube transverse plane.

Abstract: A measuring transducer includes: a transducer module including a housing and a coil within and connected with the housing; and, set in the transducer module, a transducer module including a tube and a magnet secured on a middle segment of the tube. The tube wall is so formed that a directrix of a channel surface of the middle segment extends outside a first reference plane of the measuring transducer defined by first and fourth reference axes, and the magnet is secured on the middle segment such that a second reference plane of the measuring transducer defined by second and fourth reference axes is parallel to a third reference plane defined by third and fifth reference axes or that the second and third reference planes intersect one another to form an angle of intersection of no more than 1°.

Abstract: A modular Coriolis flowmeter includes: a measuring tube module, including a measuring tube for guiding the medium, an excitation magnet on a vibration exciter for exciting the measuring tube, and a sensor magnet on a vibration sensor for detecting a vibration of the measuring tube; a receiving module including a receptacle for receiving the measuring tube module, an excitation coil on the vibration exciter, a sensor coil on the vibration sensor, and a receiving module body, including a ferromagnetic material and an opening, wherein a coil holder for the excitation coil and/or sensor coil is disposed in the opening, the coil holder including a coil holder body including an electrically insulating material.

Abstract: A measuring system for determining a filling volume of a filling material in a container comprises a 3D camera and a radar-based fill-level measurement device. The 3D camera is used to initially record at least one 3D image of at least one partial region of the empty container interior. Based on the 3D images, a data set or a digital spatial model is created by which at least such partial region the geometry of the empty container interior is represented. To create the required, three-dimensional surface or level profile, the fill-level measurement device is based on a principle of digital beam shaping, such as the MIMO principle. Thus, based on the data set reflecting the geometry in the container interior and based on the fill-level profile, the filling volume in the container can be determined.

Abstract: A device may include a flask for holding liquid. The flask may include liquid sensors for determining a fill level of the liquid in the flask. Control circuitry may be obtain readings from the sensors and determine the fill level of the flask by applying one or single-threshold conditions for elevated fill levels and a multiple-threshold condition when determining that the fill level of the liquid is at a bottom fill level.

Abstract: Device (10) for measuring the level (L) of fluid (F) inside a tank (11) for containing said fluid (F), comprising at least one mobile level blade (12) positioned, during use, inside the tank (11) and at least one sensor (14) configured to detect at least one position of said level blade (12) and positioned, during use, outside the tank (11), wherein said level blade (12) is configured to interact with said sensor (14) in order to determine the level (L) of fluid (F) in the tank (11) in relation to a threshold level (LI), in correspondence with which said sensor (14) is preferably positioned.

Abstract: Systems, devices, and methods are disclosed herein for monitoring physiological data of subjects seated on a toilet, including systems, devices, and methods for monitoring loads and forces on a scale device. In some embodiments, systems, devices, and methods disclosed herein include a set of sensors that can measure loads and forces present at a scale device receiving the feet of an individual seated in a toilet.

Abstract: The invention relates to a structural body of a weighing sensor with a Roberval mechanism, including a first part with a fixed leg of the Roberval mechanism, a second part with a movable leg of the Roberval mechanism, a third part with an upper traverse link of the Roberval mechanism, a fourth part with a lower traverse link of the Roberval mechanism, a fifth part with a lever arrangement connecting the movable leg to an output side for sensory measurement, and a sixth part comprising a traverse link coupling the movable leg to the lever assembly, at least one of the first to fifth parts including a region of the topology of a handle body of at least type one, the at least one hole of which is penetrated by at least one portion of another of the first to sixth parts integrally connected to said region.

Abstract: Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition, and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation.

Abstract: A fiber optic sensing (FOS) system may include a Brillouin Optical Time Domain Analyzer (BOTDA) unit, a first fiber optical cable optically connected to the BOTDA interrogator unit at a first end, and an optical feedthrough system (OFS) optically connected the first fiber optical cable at a second end of the first fiber optical cable. The FOS system may further comprise a fiber optic cable forming a loop within a wellbore that is optically connected to the first fiber optical cable at the OFS and a second fiber optical cable optically connected to the loop at the OFS and wherein the second fiber optical cable is optically connected to the BOTDA interrogator unit.

Abstract: A sensing system may include a distributed acoustic sensing (DAS) station to launch a DAS signal as an outbound DAS signal, as well as a plurality of DAS loopback assemblies, arranged along a plurality of spans. The plurality of DAS loopback assemblies may be arranged to separately process the outbound DAS signal, and return to the DAS station, the outbound DAS signal, as a return DAS signal that comprises a backscattered Rayleigh signal. As such, a given DAS loopback assembly of the plurality of DAS loopback assemblies may include an Erbium-Doped Fiber Amplifier (EDFA) that is arranged to compensate the loss from Rayleigh scattering of the DAS signal, and a filter device having an optical filtering function that is arranged to selectively send back just a sensing wavelength of the DAS signal.

Abstract: A system may include a distributed acoustic sensing (DAS) station, comprising a DAS transmitter to launch an outbound DAS signal in a first direction, over at least one span of an optical communications link. The system may further include a DAS receiver to receive a backscattered Rayleigh signal, based upon the outbound DAS signal, wherein the DAS signal is transmitted at least in part over a D? fiber.

Abstract: A distributed acoustic sensing system. The DAS system may include a distributed acoustic sensing (DAS) station, comprising: a DAS transmitter, arranged to launch an outbound DAS signal through an optical fiber, over at least one span; a DAS receiver, arranged to receive a backscatter Rayleigh signal, based upon the DAS signal; and at least one component, coupled to the DAS transmitter, the DAS receiver, or both, and arranged to increase a sensitivity for sensing of the DAS system.

Abstract: Various embodiments of an optical construction and an electronic device that includes such optical construction are disclosed. The optical construction includes a lens film having an outermost structured first major surface and an opposing outermost substantially planar second major surface. The structured first major surface includes a plurality of microlenses. The optical construction also includes a mask disposed adjacent to the second major surface of the lens film and includes a plurality of laser-ablated openings disposed through the mask. The openings are aligned to the microlenses in a one-to-one correspondence. The mask further includes a UV-cured polymer material and an optically absorptive material.

Abstract: An optical device for characterizing flicker from an ambient light source is disclosed. The device comprises a radiation-sensitive device configured to vary a current in response to incident radiation, a second or higher-order modulator configured to output data corresponding to the current, and processing circuitry configured to provide a real-time characterization of flicker in the incident radiation based upon an analysis of changes in the data. Also disclosed is an associated method of characterizing flicker from an ambient light source.

Abstract: A light sensing device includes: a light sensitive layer having a phosphor with two different types of lanthanides dopant ions, switching between a first state and a second state; one or more optical filters on top of the light sensitive layer. When the dopant ions are in the second state after exposure of the light sensitive layer to the second light energy, the light sensitive layer measures a first light intensity of light of the first light energy. When the dopant ions are in the first state after exposure of the light sensitive layer to the first light energy, the light sensitive layer measures a second light intensity of light of the second light energy.

Abstract: A compact structure for snapshot hyperspectral imaging may include an image slicer, an integral field unit, an integral field spectrograph, and multiplexed integral field spectrograph. The image slicer includes a first section having a first plurality of mirrors, each mirror of the first plurality of mirrors having a predetermined tilt in a longitudinal direction, a second section having a second plurality of mirrors, each mirror of the second plurality of mirrors having a predetermined tilt in the longitudinal direction, and a ridge extending laterally between the first section and the second, the first section being at a first angle relative to the ridge and the second section being at a second angle opposite to the first angle relative to the ridge. The integral field unit source includes a four mirror design including an image slicer. The integral field spectrograph includes an array of spectrographs and an image slicer.

Abstract: An example method includes receiving a first set of data that includes spectral metrics provided by a spectral acquisition apparatus that obtains the spectral metrics based on interactions of electromagnetic radiation with a sample. The first set of data is processed to obtain a second set of data that includes the spectral metrics. One or more trained models are applied to the spectral metrics or a set of values based on the spectral metrics to obtain a result. Based on the result, either a positive particle of interest detection or a negative particle of interest detection for the particle of interest for the sample is determined. A particle of interest detection notification that indicates either the positive particle of interest detection or the negative particle of interest detection for the particle of interest for the sample may be generated and provided.

Abstract: A multispectral sensor device may include a sensor array comprising a plurality of channels and one or more processors to determine that a time-sensitive measurement is to be performed, wherein the time-sensitive measurement is to be performed using data collected by one or more channels of the plurality of channels; cause the data to be collected by a proper subset of channels, of the plurality of channels, wherein the proper subset of channels includes the one or more channels; and determine the time-sensitive measurement based on the data.

Abstract: A method and device (10) for making a calibrated measurement of light from an object (E). In a first measurement window (W1), object light (LE) is received from the object (E) onto a beam splitter (11) which splits the light into a signal path (Ps) and a reference path (Pr). A first signal (S1=T·LE·Hs) is measured by a signal detection element (15s) in the signal path (Ps). A second signal (S2=R·LE·Hr) is measured by a reference detection element (15r) in the reference path (Pr). In a second measurement window (W2), calibration light (LC) is received onto the beam splitter (11). A third signal (S3=R·LC·Hs) is measured by the signal detection element (15s) in the signal path (Ps). A fourth signal (S4=T·LC·Hr) is measured by the reference detection element (15r) in the reference path (Pr). A measurement value of the object light (LE) is determined based on the measured signals (S1,S2,S3,S4).

Abstract: A reconstruction method for spectral image includes: obtaining a measurement image of an imaging object, and reconstructing and obtaining a spectral image of the imaging object according to the measurement image and a pre-calibrated sensing matrix. The spectral image includes spectral information at different position points of the imaging object. Through the method, defects of the time-consuming spectral image reconstruction method and the low resolution of the obtained spectral image in the related art can be overcame and the spectral image of the target imaging object can be obtained by reconstructing quickly and the obtained spectral image has high spatial resolution and no mosaic.