69results about How to "Calculations are simple" patented technology

The motor controller drives an electric motor including a rotor as a field magnet and stator coils of U-phase, V-phase and W-phase. The motor controller includes an exploration voltage application unit for applying an exploration voltage to the stator coils of U-phase, V-phase and W-phase such that a voltage vector expressed by the voltage applied to the stator coils rotates in a predetermined cycle with maintaining a constant magnitude, an electric current detection unit for detecting an electric current flowing through the electric motor during the period in which the exploration voltage is applied by the exploration voltage application unit, and a rotor rotation angle estimation unit for estimating a rotation angle of the rotor based on a phase of the voltage vector when a magnitude of the electric current detected by the electric current detection unit takes a local maximum value.

The invention discloses a position fixing navigation system (PFNS) based on a GNSS satellite and a method thereof, wherein, the method comprises the following steps: a sparse continuous service satellite positioning datum station network is established at a positioning area or the periphery of the area, the datum station carries out continuous high sampling rate observation and transmits observed data to a system center by a communication link; then, the system center processes the data provided by the datum station network to obtain high-precision real-time relevant system error correcting information; finally, the relevant system error of the user is interpolated / extrapolated according to the relevant error of the datum station network, and relevant correction and processing are carried out, thus obtaining the accurate three-dimension coordinate of the user. The invention has the advantages of high positioning precision, wide coverage area and convenient use, etc., thus being suitable for high-precision and real-time / rapid positioning application under special circumferences.

The invention relates to a scale adaptive kernel correlation filter fast target tracking method. According to the scale adaptive kernel correlation filter fast target tracking method, separation of afront background is promoted and a scale estimation module is added through introducing a two-dimensional variable bandwidth Gaussian window into a KCF framework, scale variations of a target are estimated according to a matching result of feature points of an image block, and whether the target is sheltered is judged by combining displacement prediction based on the scale variations. Once the target is sheltered, the user considers that no scale conversion occurs at the moment and template update is not performed, further the tracking precision is enhanced in this way. The scale adaptive kernel correlation filter fast target tracking method has the advantages of simple and fast calculation, and can significantly improve the calculation efficiency on the basis of compatible scale adaptation.

A map display device and a map display method, in which a building in a map is formed as a pseudo three-dimensional figure and arithmetic processing to display the figure as a bird's-eye view is simplified. The map display device 20 for displaying map data, formed from vector data, on a display means has a plane figure-for-bird's-eye-view creation means 218, a shift amount storage means 219, a building position determination means 220, and a figure data copying means 221. The plane-figure-for-bird's-eye-view creation means 218 creates, from the map data formed from vector data, a plane figure for creating a bird's-eye view. The figure data copying means 221 copies and draws the plane figure to display a bird's-eye view. This is performed based on the positions of buildings determined by the building determination means 220 and on the shift amounts stored in the shift amount storage means 219, and in this process, the plane figures are shifted upward on a display screen according to the shift amounts, and the copying and drawing are made one by one from a building positioned on the far side in the bird's-eye view.

A method and a system for scaling a digital source image consisting of a grid of X by Y pixels into a target image of a different resolution comprises the steps of / tools for: mapping the source pixels onto the target pixels; scaling the source image in the X or Y direction to produce intermediate pixels that are scaled in one direction by determining contributions to each intermediate pixel using a digital filter and accumulating the contributions for each intermediate pixel, wherein each source pixel contributes to one or more intermediate pixels and each intermediate pixel receives contributions from one or more source pixels; and subsequently scaling the intermediate pixels in the other direction by determining the contributions to each target pixel using the filter and accumulating the contributions for each target pixel; wherein each intermediate pixel contributes to one or more target pixels and each target pixel receives contributions from one or more intermediate pixels. The method is preferably carried out on a PE array in an SIMD (Simple Instruction Multiple Data) device.

Provided is a radiation tomography apparatus that performs radiography for a series of fluoroscopic images while moving a radiation source and a radiation detecting device synchronously in opposite directions to each other and obtains a tomographic image of a subject based on the fluoroscopic images. The radiation tomography apparatus allows to preview the tomographic image obtained through the radiography immediately after completion of the radiography. A preview image for previewing a sectional image of a subject is generated besides a tomographic image for diagnosis. The preview image can be obtained through simpler computing processing. Consequently, an operator sees once the preview image displayed on a display unit prior to the tomographic image for diagnosis, thereby determining to conduct radiography again quickly.

The invention discloses a singular value decomposition(SVD)-based image quality evaluation method, which comprises the following five steps of: 1, respectively dividing an original image and a distorted image with the size of m*n into m*n / k*k image blocks; 2, programming all the image blocks according to an SVD principle so as to implement SVD; 3, calculating structural distortion in left and right singular vectors U and V and U(p) and V(p) of the image blocks of the original image and the distorted image, and simultaneously calculating brightness distortion in singular value characteristic vectors S and S(p) of the image blocks of the original image and the distorted image; 4, integrating the brightness distortion and structural distortion of the image blocks of the original image and the distorted image to obtain a formula D1, performing cycle calculation to obtain D1 values of all m*n / k*k image blocks, and solving a mean value; and 5, integrating the image quality evaluation parameters, defining an SVD-based image quality evaluation index, wherein when a QSVD value is zero, the image quality is the best, the QSVD value is increased with the change of QSVD, and the image quality is worse. The SVD-based image quality evaluation method has the advantages of practical value and wide application prospect in the field of image quality evaluation.

Output of a gyro sensor is read at intervals of control time ts, time integration is carried out, an integrated value is computed, and an amount of change in an integrated value is determined from a difference between the calculated integrated value and an integrated value of a previous time. Thereafter, on the basis of the amount of change and a delay time determined by a shaking correcting module and the control time, an addition value (an acceleration value of an integrated value of the current time) is computed in order to obtain an amount of movement of a shift lens which can compensate tilting of an optical axis of a lens. After the computed addition value is added to the integrated value of the current time, a control value for moving the shift lens is computed by using the integrated value after addition.

The invention relates to the technical field of medical treatment detection and provides a dry eye detection and handheld imaging device and a dry eye detection device and detection method thereof. The dry eye detection and handheld imaging device comprises an eye positioner, a light source, a lens, a camera and a single chip microcomputer. The eye positioner is used for determining the eye position of a person to be examined. When the eye is located at the position of the eye positioner, the light source emits set-shaped light to the eye. The lens and the camera are both fixedly installed with respect to the eye positioner so that the camera can obtain a clear eye image projected by the light source, and the eye image is sent to a PC provided with a dry eye detection unit through the single chip microcomputer. The dry eye detection and handheld imaging device achieves focusing of the camera in advance by arranging the eye positioner, ensures that the lens is located at a fixed position without focusing adjustment, accordingly the size of the device is decreased, and the device can be designed to be the handheld portable device.

The results of mass spectrometry are compared; correspondences are established between individual components contained in different samples; the results of establishment of correspondences are checked; and varying components are extracted. At least two samples are compared with respect to the ion intensity corresponding to retention times and mass-to-charge ratios obtained by chromatography-mass spectrometry on the samples having a plurality of components. In ion groups observed as mass spectra, a correspondence between the retention times at which the same component is supposed to be observed is established by determining coincidence between the mass-to-charge ratios and determining that the ion intensity fall within a designated variation.

A laser beam and a servo beam are incident on a mirror and a transparent member, respectively, so that an angle direction A1 from an optical axis of the laser beam to be incident on the mirror to an incidence plane of the mirror and an angle direction A2 from an optical axis of the servo beam to be incident on the transparent member to an incidence plane of the transparent member are opposite to each other. With such layout of an optical system, scan loci of the servo beam corresponding to respective scan lines become closer to parallel. In the incidence plane and the outgoing plane of the servo beam of the transparent member, fine periodic structures tapered from the incidence plane and the outgoing plane are formed at pitches each equal to or less than a wavelength band of the servo beam. By this periodic structure, reflection of the servo beam on the incidence plane and the outgoing plane is suppressed.

The present invention comprises a partition-composition method and its equipment for online detection of transient stability of interconnected power system. The method consists of three parts. Firstly, according to the dynamic response data of the generators at the actual time, the key parameters of transient stability analysis of local areas can be obtained from local dispatch control center based on the wide area measurement system. Secondly, the key parameters of entire grid can be obtained using the uploaded parameters from the local area. Lastly, using the partition-composition method, parameters of an adjoint power system of the entire grid can be obtained. The equipment consists of 4 modules, including the first obtained module, transport module, the second obtained module and the composition module. Using these modules, transient stability data of entire grid can be obtained exactly without the limitation of network topology, system model and parameters. The present invention can be a beneficial and potential tool for the online analysis of power system transient stability with higher computation speed and lower storage requirement.

The invention belongs to the technical field of touch screens, and provides a touch screen terminal as well as a touch detection method and system thereof. The touch detection method comprises the following steps: a, when a detection channel detects that a touch operation is performed on a touch screen, identifying the distribution condition of detection points the data of which changes; and b, according to the identification results obtained in the step a, through combining with the correspondence between the distribution condition of preset detection points the data of which changes and thetouch operation, determining that the area at which the current touch operation aims is a touch screen area or a touch key area, wherein the touch screen area only covers the visible area of the touch screen terminal, and each touch key in the touch key area reuses the detection points in the touch screen. In the invention, because the touch screen area only covers the visible area of the touch screen terminal, the detection resolution of the touch screen at the visible area part can be ensured; and because the touch keys in the touch key area reuse the detection points in the touch screen, the area at which the current touch operation aims can be determined.

Compressed air in a temperature equalizing container (2) is discharged to a sample pneumatic apparatus (100) where temperature response to time is measured and a time function of heat transfer coefficient is determined. In a flow rate operating process, flow rate of the sample pneumatic apparatus (100) is determined from pressure response to time using the function of heat transfer coefficient. Since a flow rate operating expression used in the flow rate operating process is provided with a correction term introduced with energy equation in the temperature equalizing container (2), an accurate flow rate can be measured even if temperature in the temperature equalizing container (2) is not equalized strictly.

The invention relates to a surface roughness measuring system and method based on a successive two-angle method. The front ends of the middles of two rear connecting rods are connected with a middle wheel through a middle shaft, and the rear ends of the middles of the two rear connecting rods are connected with a rear wheel through a connecting rod shaft; both sides of the middle shaft are respectively connected with a front connecting rod, and the front ends of the two front connecting rods are connected with two front wheels through a connecting rod shaft; a distance encoder is mounted at one end of the connecting rod of the rear wheel, an angle encoder is fixed at the one end of one of the front connecting rods, a gyroscope sensor is mounted on the two rear connecting rods, and the distance encoder, the angle encoder and the gyroscope sensor are connected with a portable computer through a data acquisition card. The distance encoder is used measuring pulse in an advancing direction; the angle encoder is used for measuring changes of the included angles of the connecting rods; the gyroscope sensor is used for measuring the inclination angle during the measuring process and inputting measured signals into the computer through the data acquisition card to compute collected data through the principles of the successive two-angle method, to obtain the cross-section diagram of a road surface to be measured and the standard deviation of the roughness of the road surface, and to convert the standard deviation of the roughness of the road surface into international roughness index (IRI).

The present disclosure provides a motion recognition technique which simplifies computing processes and which can be implemented without recourse to a large amount of computing resources, as well as a technique for controlling a control target apparatus by use of the same motion recognition technique. A motion recognition apparatus is disclosed which includes a motion recognition part configured such that upon recognizing a recognition target object moving from one determination area to one other determination area before moving back to that one determination area, the motion recognition part recognizes a predetermined swing motion.

A three dimensional image processing program, a three dimensional image processing method, and a video game device are provided that can render a large number of objects. A graphics data generating processor computes the post-movement position coordinates of objects in a virtual three dimensional space, modifies the post-movement position coordinates of objects calculated thereby such that the position coordinates are kept inside a display area in which the objects are displayed, and a rendering processor renders the objects inside the display area.

An apparatus for acquiring distance information and images includes an image sensor unit including a left image sensor, a central image sensor, and a right image sensor, which are arranged on one board while being spaced apart from one another at a predetermined interval, and a distance information extraction unit that extracts distance information by comparing an image of a reference object acquired through the central image sensor with an image of the reference object acquired through the left image sensor and an image of the reference object acquired through the right image sensor.

The invention discloses a face recognition method and a mobile terminal. The face recognition method comprises the following steps: obtaining image data of a video image output by a camera by a mobile terminal and extracting illumination data from the image data; confirming a coordinate position of a recognized face in the corresponding video image by using a face recognition algorithm according to the illumination data; confirming the display size and the display position of the recognized face on a screen of the mobile terminal according to the size of the corresponding video image of the recognized face, the size of the screen of the mobile terminal and the coordinate position of the recognized face in the corresponding video image; displaying the recognized face on the screen of the mobile terminal. The face recognition method and a face recognition system can realize the face reorganization by the mobile terminal at low cost.

Regarding a chromatogram data processing device configured to process three-dimensional chromatogram data collected on a target sample in which dimensions are made up of time, wavelength, and absorbance, and the chromatogram data processing device includes a differential spectrum generating means configured to generate a differential spectrum that represents a change in a wavelength differential coefficient, which is a differential coefficient in a wavelength direction in a predetermined wavelength range, based on the three-dimensional chromatogram data, with respect to an absorbance spectrum representing a relation of the wavelength and the absorbance at each time in an entire temporal range or a predetermined temporal range, and a determination means configured to determine whether or not one or plural other components are included in a peak of a target component, based on a temporal change in a waveform of the differential spectrum, so that the determination on whether or not a target sample includes impurities can be performed with high accuracy without the requirement of complicated computation processing.

The invention discloses a plate structure-sound field coupling analysis method. The method includes the steps that a finite element method and a radial point interpolation method are combined, and dispersing is conducted on a system kinetic equation of a plate structure; a boundary integral equation of a sound field domain is established according to a boundary element method; a structure-sound field coupling equation is established according to a dispersed system kinetic equation, the boundary integral equation and the structure-sound field coupling boundary condition. The invention further discloses a plate structure-sound field coupling analysis device corresponding to the plate structure-sound field coupling analysis method and a computing device with the plate structure-sound field coupling analysis device.

A distance acquisition device is for acquiring a first rounded distance from a reference point to a basis point, and for subsequently acquiring a second rounded distance from an adjacent point to the basis point. The reference, adjacent, and basis points are disposed on a plane. The adjacent point is adjacent to the reference point. The distance acquisition device includes: a reference distance acquisition unit for acquiring a precise distance from the reference point to the basis point, and for subsequently performing rounding upon the precise distance so as to obtain the first rounded distance; a reference error acquisition unit for obtaining a first reference error corresponding to a difference between the precise distance and the first rounded distance; and a distance estimating unit for setting the second rounded distance based on the first rounded distance and the first reference error.

The invention discloses a rapid MSK communication detection demodulation method, and relates to an easy and rapid MSK communication detection and information blind demodulation reduction method. A user judges whether target communication exists or not and completes information demodulation reduction according to analysis of output signals of a monitoring / reconnaissance receiver in the certain radio environment and extraction of key parameters. The method comprises the steps that a non-cooperative receiver searches for and scans a related frequency band, the computation complexity is low, and software and hardware are easy to obtain. Meanwhile, the information blind demodulation reduction method is a non-coherent detection method. According to the rapid MSK communication detection demodulation method, complex operation processing of carrier phase synchronization is avoided by achieving demodulation reduction of unknown information, meanwhile, the requirement for system carrier frequency estimation accuracy is low, a certain error is allowed to exist in carrier frequency estimation, and the requirements that deviation possibly exists in the working frequency in actual communication and the signal to noise ratio received by non-cooperative communication is low are met.

The invention is applicable to the field of the information security, and provides a method and a device for detecting an automatic submitted content. The method comprises the following steps of acquiring an attribute of content data submitted within a preset time, wherein the attribute of the content data comprises the length of the content data and the time for submitting the content data; extracting key characteristics of automatic submission according to the attribute of the content data, comparing the key characteristics of the automatic submission with a preset threshold value, and detecting whether the content data submitted by the user is the automatic submission content or not. According to the embodiment, the key characteristics of the automatic submission is extracted and whether the content data submitted by the user is the automatic submission or not is judged only for the content data submitted by a single user, so that procedures for extracting key words, analyzing a search result webpage and calculating texture similarity are avoided, simpleness in calculation processing is achieved, and the efficiency is high.