241results about How to "Realize automatic correction" patented technology

The invention discloses a multi-gesture and cross-age oriented face image authetication method. The method comprises the following steps of: rapidly detecting a face, performing key point positioning, performing face alignment, performing non-face area filtration, extracting the face features by blocks, performing feature dimension reduction and performing model prediction. The method provided by the invention can perform the face alignment, realize the automatic remediation for a multi-gesture face image, and improves the accuracy rate of the algorithm, furthermore, the feature extraction and dimension reduction modules provided by the invnetion have robustness for aging changes of the face, thus having high use value.

A image processor of automatic calibrating aberration makes use of radon transforming to pick up four sides profiles of business cards and texts, with profile vertex message, we can calibrate the image aberration and establish internal mathematics module of shot equipment and equation groups of business cards and texts aspect ratio parameter, then solve equation groups to get the rectangle object's aspect ratio and apply it to calibrate images to prevent distortion. At last, the invention can identify the image inversion by words identification for judging if it is necessary to circumvolve the calibrated images to get the perfect calibration results. It is very easy to calibrate images without manual practice , we can utilize the invention in most of the imaging equipments ,such as medical imaging, supervising equipment, mobile, digital camera ,digital vision and so on, no wonder that every user can do the operation very easily.

The invention discloses a multi-view stereoscopic image parallax free correction method and relates to the image processing technology and free stereoscopic imaging; a multi-view stereoscopic image is obtained by using a parallel camera array method, and two viewpoint views for region segmentation and parallax estimation is selected; image region segmentation is respectively carried out to the two selected viewpoint views to obtain mark numbers of all regions, and a center region object of the view and the coordinate of the geometric center point of the center region object are determined according to the region segmentation result; parallax figure is obtained by adopting a relevant window method based on the region segmentation; a correction translational distance of the multi-view stereoscopic image is calculated according to the stereo vision parallax principle; by taking the view with the viewpoint 1 as the reference, the parallax free correction of the multi-view stereoscopic image is realized; the corrected multi-view stereoscopic image is synthesized into a composite view needed by a multi-view free stereoscopic display by adopting the stereoscopic synthesis algorithm and is displayed on the multi-view free stereoscopic display.

The invention provides a method for automatically correcting temperature drift of an electrical vortex sensor. According to the method, a certain impedance measuring circuit is utilized to obtain the equivalent inductance and the resistance of a detection coil, the relationship, changing along with temperature and measurement, of the inductance and the resistance of the detection coil is utilized to remove the influence of temperature changes and extract actual measured change information. According to the method, signals of the vortex sensor composed of an impedance measuring module (4) and a rectification calculating module (5) is used for conditioning the circuit, so that to-be-measured information is obtained, rectification is conducted automatically, and the influence of temperature changes is removed at the same time. According to the method, when temperature drift is rectified, no extra probes or coils or temperature sensors are further arranged, and temperature drift rectification effect is remarkable. Moreover, the method has the advantages of being wide in application range, simple in structure, easy to implement and the like. When the method is used for automatically rectifying the temperature drift of a probe of the electrical vortex sensor, temperature drift coefficients can generally be reduced to below 5nm / DEG C from 500nm / DEG C.

The invention relates to the technical field of train wheel diameter correction and discloses an automatic train wheel diameter correcting method. The automatic train wheel diameter correcting method includes the steps of firstly, determining the initial values of wheel diameters; secondly, arranging transponders, selecting two adjacent transponders on a straight line to serve as the basis reference of wheel diameter correction, and measuring the actual distance between the two transponders; thirdly, by a train, obtaining the operation distance in set time according the measured speed, and obtaining the updated wheel diameter values according to the ratio of the operation distance to the measured actual distance and the initial values of the wheel diameters; fourthly, performing validity check on the updated wheel diameter values; fifthly, filtering bad values of the updated wheel diameter values. The method has the advantages that the standard transponder system of a subway line is used as the auxiliary equipment for train wheel diameter automatic correction, and automatic train wheel diameter correction is achieved while system speed measuring and positioning precision is increased.

The invention discloses a zero-cross detection circuit and detection method used for a synchronous buck converter. The zero-cross detection circuit comprises a state judging circuit, a logic circuit, an adding and subtracting counting circuit, a digital-to-anology converting circuit and a zero-crossing comparator; the direction of a current passing through an inductor can be judged according to the state of a body diode of a lock-in tube, if the body diode is powered on, it is illustrated that a threshold value of zero-cross detection is positive, the threshold value can be decreased in the next period, it is illustrated that the threshold value of zero-cross detection is negative until the diode is cut off, and the threshold value can be increased in the next period. Output of the digital-to-anology converting circuit is regulated through the adding and subtracting counting circuit to decrease and increase the threshold value, signals are optimized through a balance module to form correction analog signals, and therefore positive and negative correction within a certain range is achieved, dynamic balance of zero-cross detection at a zero point is achieved, automatic correction of an offset voltage of the zero-crossing comparator is achieved, and circuit power consumption is reduced.

The invention relates to a learning support system and a learning evaluation method thereof, which belongs to the application field of learning system and computer information technology. The learning support system comprises four functional modules: a learning support module, a result management module, a teaching management module and a system management module. The invention is adapted for the demands of different levels of structures, and the learning task is open; the invention is adapted to various earning methods and contents, promotes the communication and the cooperation between the students as well as the effective communication and interaction between the teachers and students; the invention realizes diversified and intelligent learning evaluation; and the invention can perform online examination of the design type subjective items with the online examination system interface to realize automatic correction. The system-based learning evaluation comprises strident evaluation, teacher evaluation and self evaluation. The invention can finish generation and output of various statistical forms with a self-defining report system interface; the invention provides the basic data with a teaching management information system interface; and the invention is convenient for learning for the students with a network learning system (or teaching resource network station) interface.

The invention discloses a radial image distortion rectifying method based on distorted linear structure detection. The method includes S1 extracting distorted image contours, S2 extracting arcs in an edge contour, S3 sorting arcs and S4 rectifying distorted images. The invention further discloses a radial image distortion rectifying system based on distorted linear structure detection. A solution for rectifying radial image distortion generated during an image obtaining process is provided in order to solve the problem radial distortion is generated when a camera takes images, and the keys of the solution are the distortion reasons and distortion rectifying difficulties. Automatic rectification of radial image distortion is realized based on distorted linear structure in distorted images, no artificial intervention and special template are needed, and the robustness is high.

The invention discloses a phase-locked loop frequency synthesizer with a loop gain calibration function, including a phase-lock loop and a gain calibration unit. The phase-lock loop is composed of a frequency / phase discriminator, a charge pump, a loop filter, a voltage-controlled oscillator, and a frequency divider; the gain calibration unit is composed of a state machine, a comparator, two analog-digital converter, a reproductive charge pump current source, and a reproductive loop filter resistance R. the invention implements an automatic correction of the loop gain or bandwidth of the frequency synthesizer, the correction is dynamical, elements such as technique, temperature, voltage, longevity and the like are all corrected automatically, its unit structure is simple, a power consumption is low, and the invention is specially suitable for the wireless radio frequency requiring a stable loop gain.

The invention discloses a temperature drift self-correction method of a sea radioactivity measurement sensor, and a sensor. A temperature-sensitive element is additionally arranged on the sensor, the temperature of the sensor is detected through the temperature-sensitive element, the amplification gain of the sensor is automatically adjusted according to temperature change of the sensor, and amplitude of pulse voltages generated by the sensor is adjusted to the amplitude of pulse voltages generated when the sensor measures the same radionuclide at a reference temperature, such that peak drift of gamma energy spectrum data generated by the sensor can be automatically corrected and a more accurate detection result can be obtained. By using the sensor provided by the invention, the activity of such radionuclide as seawater, seabed sediment, marine organisms and the like in a sea environment can be automatically and continuously monitored for long time and a stable reliable monitoring result can also be obtained; and the method and the sensor can also be suitable for various sea automatic monitoring platforms and can be promoted and applied to the radioactivity monitoring work process of other water body environments.

The invention relates to a method for automatically correcting the frequency deviation of a crystal oscillator in a GSM base station, which comprises the following steps: step 1. a linear change relatThe invention relates to a method for automatically correcting the frequency deviation of a crystal oscillator in a GSM base station, which comprises the following steps: step 1. a linear change relationship between a register value configured to a digital-to-analog conversion unit and the frequency deviation value of the crystal oscillator is tested offline; step 2. when preset conditions are sationship between a register value configured to a digital-to-analog conversion unit and the frequency deviation value of the crystal oscillator is tested offline; step 2. when preset conditions are satisfied, the frequency deviation of the crystal oscillator is estimated in the base station; step 3. a benchmark frequency point where the frequency deviation of the crystal oscillator is compensated iisfied, the frequency deviation of the crystal oscillator is estimated in the base station; step 3. a benchmark frequency point where the frequency deviation of the crystal oscillator is compensated is selected; and step 4. the frequency deviation of the crystal oscillator is compensated according to the linear change relationship in the base station, for the purpose of automatically correcting ths selected; and step 4. the frequency deviation of the crystal oscillator is compensated according to the linear change relationship in the base station, for the purpose of automatically correcting the frequency deviation of the crystal oscillator in the GSM base station. The method and the device take the crystal oscillator in other peripheral base stations as a benchmark to realize the automatice frequency deviation of the crystal oscillator in the GSM base station. The method and the device take the crystal oscillator in other peripheral base stations as a benchmark to realize the automatic adjustment of the frequency deviation of a TCXO crystal oscillator in the base station. By the automatic adjustment of the frequency deviation, the clock frequency of the base station keeps consistenadjustment of the frequency deviation of a TCXO crystal oscillator in the base station. By the automatic adjustment of the frequency deviation, the clock frequency of the base station keeps consistent with that in other peripheral base stations; therefore, the application of the TCXO crystal oscillator in base station design is possible.t with that in other peripheral base stations; therefore, the application of the TCXO crystal oscillator in base station design is possible.

The invention relates to a signal processing method of an automatic zero-point electromagnetic flow meter and a system thereof. Working periods with excitation current I=0 are incessantly inserted during a working process of a magnetic field B generated by the excitation current I of the electromagnetic flow meter. By means of the characteristic that inductive electric potential E equals zero on the condition that I equals zero and B equals zero. Dynamic detection is carried out at this time with an output signal U of a signal amplifying unit as a signal zero-point value Z so as to utilize data deprived of a dynamic zero-point value Z to accurately estimate an actual flow velocity V. Obviously, influence on measurement of the flow velocity V caused by zero-point change is eliminated, and automatic calibration of an zero point is achieved so that an electromagnetic flow meter newly arranged on a technological pipeline can be directly put in operation without firstly adjusting the zero point and the like on the condition that the flow V equals zero, thereby greatly improving utilization performance of the electromagnetic flow meter. Meanwhile, change of symmetrical performance of the inductive electric potential of the sensor can be measured according to change of the signal zero point value Z so as to diagnose change of electrode pollution, insulation performance and the like of the sensor.

The invention provides a remote automatic correcting method for circuit virtual experiments, which comprises the following steps of: resolving input standard answer experiment scripts to obtain a set of apparatus score points and a set of circuit connection score points; selecting the required score points from the score point sets, and setting a score corresponding to each score point, wherein after the setting is finished, the score point is a score rule and a plurality of score rules form a score rule base; resolving virtual experiment scripts to be corrected into apparatus objects and apparatus port objects, and converting the apparatus objects and the apparatus port objects into factual data; judging whether the factual data are matched with the score rules in the score rule base, and recording the matching result of each score rule during matching; and accumulating the scores of the successfully matched score rules to obtain a total score of experiment correction, and outputting the matching results and the scores serving as corrected score sheets.

The invention discloses a method and a device for detecting abnormal operation of an elevator, and aims at solving the technical problems in the prior art that an elevator control system cannot automatically detect whether the position of an elevator car is abnormal or not. The method comprises the following steps: detecting a first group of operation parameters of the elevator through a first detection manner in an operation process of the elevator; meanwhile, detecting a second group of operation parameters of the elevator through a second detection manner, which is different from the first detection manner; judging whether a detection result of the first group of operation parameters and a detection result of the second group of operation parameters accord with a pre-set corresponding relation or not, and obtaining a judging result; when the judging result is negative, determining that the operation of the elevator is abnormal. The technical effect of automatically detecting the abnormal position of the elevator car by the elevator control system is realized.

The invention discloses a method for eliminating axial distance error between an object and a CCD through a self-focusing iterative algorithm. The method comprises the following steps: establishing anaxial distance error model through a Fresnel diffraction theory, and calculating axial distance through measurement of resolution of amplitude of a restored object, that is, in the laminated imagingprocess, transmitting reconstructed images to axial-distance-different planes through Fresnel diffraction integral and calculating a Tamura coefficient at each plane, the Tamura coefficients being resolution evaluation indexes, and when the Tamura coefficient reaches a maximum value, the generated restored image being clearest; and serving the axial distance corresponding to the place as a new axial distance for the next iteration, and repeating the process until the axial distance converges, and thus accurate axial distance is obtained. The method is good in correction effect for the axial distance errors in the laminated imaging process, is fast in operation speed and is high in image restoration resolution; and the method can be applied to the field of biological microscopy and opticaltest and the like.

The invention discloses an information processing method and an electronic device. The information processing method is used for an electronic device provided with or connected with a projection unit, and the projection unit is used to form projection images. The information processing method is characterized in that the projection effect can be detected during the projection of the projection unit, and then the actual projection effect parameters can be acquired; the expected projection effect parameters can be acquired; the achieving of the expected projection effect can be determined according to the actual projection effect parameters and the expected projection effect parameters, and the determination result can be acquired; projection image correction parameters can be formed according to the determination result; and projection images can be formed according to the image correction parameters.

The invention relates to a method for correcting the coaxiality of inner-diameter concentric circles of a magnetron. An anode component of the magnetron is inserted in a cathode component of the magnetron in the direction of the longitudinal axis of the cathode component of the magnetron; the anode component of the magnetron is a cylinder, and the cathode component of the magnetron is a shell. The method comprises the following steps that an outer circle and an inner circle in linkage with the cylinder are selected in the shell; the circle center O1 of the outer circle and the circle center O2 of the inner circle are determined; and the circle center O2 of the inner circle is adjusted by using the circle center O1 of the outer circle as the datum without moving the circle center O1 of the outer circle so that circle center O2 of the inner circle can approach the circle center O1 of the outer circle to be within in a preset error range, the longitudinal central axis of the shell penetrates through the circle center O1 of the outer circle, and the longitudinal central axis of the cylinder penetrates through the circle center O2 of the inner circle. According to the method for correcting the coaxiality of the inner-diameter concentric circles of the magnetron, automatic correction can be achieved, so that detection efficiency and correction efficiency are higher; operation and application are more convenient.

The invention relates to a turning control device for the simulator of driving car, including the input (6) and output (11) axis driving by the steering wheel, the deceleration device between the above two axises, the angular displacement sensor (1) and the spring for replacement (13) on the output axis (11). The spring in this invention can make structure compact, not take up too much space, realize steering control and automatic replacement of the steering wheel, as well as achieve the number of rotation equal to that of the real vehicles.

The invention discloses a color constancy method with the adaptive capacity. The method includes the concrete steps that through a non-classic receptive field single antagonism model, different scene images are automatically adapted to by the utilization of the interaction between the inhibiting effect of the periphery and the disinhibition effect of a subregion under different sensitivity coefficients, color images with color bias shot in nonstandard light are restored to color images without color bias in standard light, the colors of the images with color bias can be automatically corrected, and in other words, color constancy is achieved. Tests based on nearly a thousand images on different scenes and under different light conditions of multiple international general color constancy databases prove that the color constancy method with the adaptive capacity has better effect than a classic color constancy algorithm.

The invention relates to a building base contour refined extraction method based on a live-action three-dimensional model, and the method carries out the building base contour extraction based on the live-action three-dimensional model, and comprises the steps: firstly, extracting a vegetation pattern spot through a deep learning algorithm to refine the building pattern spot, effectively distinguishing the vegetation and the building which are close in height, and generating an initial building vector surface; then, generating a side image map based on the initial building vector surface and the live-action three-dimensional model, generating a first side image map through the side image map, and classifying the first side image map by using a deep learning algorithm, so that attachments on the side of the building can be effectively eliminated, and interference is avoided; and then, a window is extracted from the second side image to obtain floor information, so that protruding structures such as a building eave and illegal construction can be effectively removed, automatic correction of the eave is realized, and an accurate building base contour can be extracted.

The invention discloses a magnetic resonance radio frequency excitation energy automatic correction method and specifically relates to the technical field of magnetic resonance imaging. Automatic correction is realized by the following steps of: according to radio frequency pulse shapes, establishing various kinds of excitation energy proportions between forming radio frequency pulses and a standard hard pulse, and forming an index list; in a practical imaging process, when scanning is carried out on different parts of different bodies, using the standard hard pulse for excitation, and automatically correcting the radio frequency energy needed when an excitation angle is 90 degrees and radio frequency energy needed when a flip angle is 180 degrees; and combined with the proportion relation list obtained in the radio frequency pulse design process, calculating the accurate radio frequency energy needed by different parts and different bodies in the magnetic resonance imaging scanning process in real time.

The invention relates to a deviation correcting and conveying device special for lithium battery cores. The deviation correcting and conveying device comprises a conveying supporting plate. Four conveying supporting columns are symmetrically installed on the right side of the lower end of the conveying supporting plate, and a conveying hopper is welded among the four conveying supporting columns. The conveying hopper serves as a feeding hopper for the battery cores, the four conveying supporting columns play a role of uniformly supporting the conveying hopper, and the conveying hopper is of a rectangular pyramid structure with the lower ends of the four sides inclined inwards. As the rectangular pyramid structure inclined inwards is adopted for the conveying hopper, the battery cores can roll to the bottom under gravity after being placed in the conveying hopper. Four conveying openings are formed in the four side walls of the conveying hopper respectively, four guiding mechanisms are arranged at the edges of the four conveying openings respectively, and three discharging ports are evenly formed in the lower end of the bottom of the conveying hopper. The deviation correcting and conveying device can achieve the function of continuously correcting the lithium battery cores in batches and rapidly conveying the lithium battery cores, and has the advantages of being high in conveying speed, short in conveying time, capable of automatically correcting position deviation of the battery cores, high in conveying efficiency and the like.

The invention provides a user interaction method and device. The method mainly comprises the steps of: using an infrared camera for obtaining first operation data of a user on a user interface throughan infrared grating; acquiring second operation data of the user on the user interface by using a depth camera, and fusing the first operation data and the second operation data to obtain user operation data; and updating the display content of the projection unit on the user operation interface based on the user operation. The judgment on the user action is more accurate, so that more accurate control is realized, the acquired depth image is adopted to acquire rich gesture actions based on the advanced depth judgment model, and more and richer interaction methods can be realized based on thegestures of the user, so that subsequent function extension is realized; the depth camera is combined with the infrared signal to determine the gesture action, so that the gesture action recognitionprecision is further improved, and in addition, the automatic correction of the projector can be realized.

A vehicle position correction device used for a three-dimensional garage comprises a parking base plate and limiting devices arranged on the two sides of the parking base plate. The base plate comprises a base layer mounting plate and an upper layer parking plate. An interval is arranged between the mounting plate and the parking plate. The middle of the parking plate is provided with a square notch which is internally provided with a mobile plate. The mobile plate is arranged on the mounting plate through slide rails and slide blocks, connected with a telescopic structure stretching and retracting left and right and controlled by the telescopic structure to move left and right, wherein the slide rails and the slide blocks slide left and right. Four supporting mobile blocks are evenly distributed on the mobile plate and fixed to the mobile plate through telescopic structures stretching and retracting up and down. The limiting devices on the two sides are each provided with a distance sensor appointing to the corresponding side of a vehicle. By adoption of the vehicle position correction device, the defects in the prior art are overcome, automatic correction of the vehicle is achieved, a vehicle loading platform does not need to be made to consistent with a parking space in size, later vehicle moving can also be facilitated, parking is facilitated, and the vehicle position correction device is safe and reliable.

The invention relates to a picture processing method and device and a computer readable storage medium. The method comprises the following steps that: according to the edge line of an object to be identified in an original picture, determining the practical coordinate of each vertex of the object to be identified under a first coordinate system; according to the edge line of the object to be identified, determining the standard size of the object to be identified, and according to the standard size, obtaining the standard coordinate of each vertex of the object to be identified under the firstcoordinate system; and according to the practical coordinate and the standard coordinate of each vertex, solving a distortion correction matrix, and utilizing the distortion correction matrix to carry out correction processing on the original picture to obtain a corrected picture. By use of the scheme provided by the invention, the automatic correction of the object to be identified in the original picture can be realized.

The invention relates to a method based on voice translation text output. The method is characterized in that steps of original voice storage, original voice correction, phonetic transcription storage, voice text transformation, translated text storage and text storage of an original voice are carried out sequentially, so output is realized after the original voice is translated into a text signal. According to the method, not only can automatic correction on a dialect in an inputted original voice be carried out, but also due punctuations in the corresponding translation content can be automatically determined according to voice pause and rising and falling of intonation, till segment sentence modification is carried out to form a standard text, and thereby printing and output of the text or synchronous seeing and hearing of the text and the original voice are realized. The method is not only suitable for voice-text transformation communication of a common telephone set, a multimedia telephone set and an IP telephone, but also is suitable for terminal equipment, such as a radio, a recorder, a recording pen, a radio cassette player and a translator device which require voice-text transformation.

The holding and pressurizing device for static pressure pile machine includes frame on the pedestal of the pile machine, lower sliding box, one pair of swinging parts hinge to two sides of the sliding box, telescopic rod with lower end hinged to the swinging part connecting point and upper part connected to the driving device on the frame, holding and pressurizing friction block hinged to the swinging part connecting point, and locating friction blocks set via locating driving device to the inside of the sliding box. The present invention has the advantages of integrated holding and pressurizing operation, high work efficiency and capacity of correcting and locating the pile automatically.

The present invention relates to the field of wireless charging, and especially relates to a charging system of a wireless password keyboard, and a charging base. A detection surface of the charging base is provided with a position detection module used for detecting the position of a wireless receiving module of the wireless password keyboard, the position is obtained through the position detection module, then a built-in control module controls a transmitting module to move to the position through a stepping motor, and the transmitting module wirelessly charges the receiving module. Through adoption of the charging system, when the wireless password keyboard enters into an induction area, the position detection module always can accurately position a charging position and enables the transmitting module to move to the optimal charging position for performing wireless charging, thereby achieving automatic correction of the position, and further improving the charging efficiency.