78results about How to "Speed ​​up the calibration process" patented technology

The invention discloses a desktop portable sight line tracking method and apparatus. The method comprises the steps of clicking a preset calibration point on a screen by a user to perform calibration, and capturing a facial image of the user by a system; performing pupil localization and Purkinje hot spot localization on the captured facial image of the user, extracting an eigenvector, and standardizing the eigenvector; obtaining a mapping relationship through calibration point data, and substituting the standardized eigenvector of each frame of image into the mapping relationship to obtain actual fixation point coordinates; and extracting fixation point coordinates in all image frames to realize sight line tracking. According to the method and apparatus, an ellipse fitting-based improvement method is proposed for accurately locating the pupil; two Purkinje hot spots are simultaneously located through a clustering-based method; and the method and apparatus have the advantages of quickness and accuracy for localization.

The invention relates to a method and a system for uploading duplicated files. The method comprises the steps: a client end calculates a calibration section calibration value of a file with the file size which is greater than or equal to a first threshold value, and a server end quickly matches the calibration section calibration value with the file size; if quick matching is successful, the client end calculates a calibration value of the whole file, and the server end precisely matches file calibration information; if precise matching is successful, the server end establishes a file to be uploaded to a map recorded in an existing grandfather, otherwise, stores the file calibration information and generates a grandfather record after the file is uploaded. If no matching item exists during quick matching, calculation of the calibration information of the whole file to be uploaded can be avoided; meanwhile, consistency of the file to be uploaded and a file matched by the server end is guaranteed; by pre-storage of the file calibration information during precise matching, repeated calculation of the file calibration information by the server end is avoided.

The invention provides a multi-laser radar position calibration method and a multi-laser radar position calibration device. The multi-laser radar position calibration method comprises the steps of: acquiring first point cloud data and second point cloud data; screening the first point cloud data to obtain a first point cloud subset, and screening the second point cloud data to obtain a second point cloud subset; estimating a first plane normal vector n1 according to the first point cloud subset, estimating a second plane normal vector n2 according to the second point cloud subset, and constructing a first equation: C*n1=n2; changing a position of a calibration object, repeatedly executing the change for m times to obtain m groups of the first equation; solving the m groups of the first equation to obtain a rotation matrix C; acquiring a translation vector T between two radars; and regarding the acquired rotation matrix C and the translation vector T as initial values, performing pointcloud matching on m groups of first point cloud subsets obtained in m acquisitions to obtain m groups of C1, performing point cloud matching on m groups of second point cloud subsets obtained in m acquisitions to obtain m groups of T1, and regarding the C1 and T1 with the highest scores in the m groups as final results. The multi-laser radar position calibration method and device can accelerate the calibration process of the positional relationship of multiple laser radars, and obtain the calibration results with higher precision.

The invention discloses a verification method and apparatus of an APK file package. The verification method comprises: obtaining a component file of a to-be-verified APK file package; reading the content of the component file; writing the read content into a first object file; calculating a first verification value of the first object file; sending a verification request containing the first verification value to a server issuing the to-be-verified APK file package; and receiving a verification result. Under the circumstances that the server receives the verification request, the to-be-verified APK file package is verified according to the first verification value and a second verification value and the verification result is returned, wherein the second verification value is a verification value, stored by the server, of the target APK file package. The to-be-verified APK file package and the target APK file package have identical identifier information. With the method and apparatus, a technical problem of low safety of verification of the APK file package in the prior art can be solved, thereby improving the verification accuracy of the APK file package.

The invention is applicable to the technical field of transmission networks, and provides a transmission network physical same-route hidden danger checking and avoiding system and method, the system comprises three subsystems, namely a pipeline system, a manufacturer network management system and an integrated resource system, and the pipeline system is used for risk checking of cross-network-management same-route; the transmission optical cable link information is called through a pipeline system, and the data is integrated into a transmission optical cable segment table; meanwhile, risk traversal of the same route is carried out on the optical cables in the transmission optical cable segment table, and the risk ratio of the same route is calculated to form a same-route optical cable pair, a transmission optical cable segment table is formed, physical same-routing hidden trouble checking of the transmission network is realized; and then the manufacturer network management system modifies the port data of the optical cable according to the new transmission optical cable segment table, increases the management of the risk link group, checks and reminds the risk link group when the service configuration is passed, and issues the configuration after confirmation, thereby realizing the avoidance of the hidden trouble checking of the physical same route of the transmission network.

The embodiment of the invention discloses a time series forecasting method and equipment and a system adopting the same. The method comprises the following steps: training acquired time series data to obtain a training data set; utilizing the training data set to train a selected predictor group to generate a diversified predictor group; extracting sparse signals to restructure majorized functions and solving the weighting factor of the diversified predictor group; and intercepting predictors with non-zero weighting factors to forecast the time series data. In the embodiment of the invention, the weighting factor of the diversified predictor group serves as the sparse signals for restructuring and solving the corresponding majorized functions, and as the obtained weighting factor has sparseness, the obtained weighting factor is utilized to achieve time series data forecasting and checking for the predictors with non-zero weighting factors; and as the quantity of the predictor group is reduced, the checking is sped up and the forecasting accuracy is improved.

The invention provides an encryption method, a decryption method, a communication method and systems and devices thereof. The method comprises the following steps: initializing a state vector K; performing binary conversion on the algorithm key to form a first byte stream, and generating an index number; marking frame header information of the algorithm key according to the index number; rotating the first byte stream to form a new password state vector Q; performing loss XOR calculation on the state vector K, the password state vector Q and the original character string to form a second byte stream; storing the second byte stream in an array to form a character encryption string; and according to the real-time timestamp, the index number and the data key, encrypting the character encryption string by using base64 to obtain an encrypted character string. According to the encryption and decryption method, on the basis of matrix loss symmetric conversion, the formed result is complex, cutting irregularity can follow, meanwhile, the generated string is the binary password stream, the generated string cannot be simulated, brute force cracking is difficult, and the safety level is high.

The invention relates to a working method of an optical path switching interface mechanism for an optical fiber channel test of a relay protection device. According to the optical path switching interface mechanism, the power source end of a control module is connected with a control power source, the input end of the control module is connected with a button change-over switch, and the output end of the control module is connected with a driver module; an optical path switching module comprises two optomagnetic switches, four transmitting optical fiber interfaces and four receiving optical fiber interfaces, wherein the output end of the driver module is connected with the control ends of the two optomagnetic switches, and the input ends and the output ends of the two optomagnetic switches are connected with the corresponding transmitting optical fiber interfaces and the corresponding receiving optical fiber interfaces. The control module provides a control signal corresponding to the connected optical path switching module, a test instrument can be connected with the relay protection device or an optical power meter or an optical attenuator through the optical path switching interface mechanism, then the driver module drives the optical path switching module to carry out optical path switching of the interfaces, and therefore the normal running state and the testing state of a protection test and the optical fiber channel test can be achieved.

The invention discloses a business knowledge management based configuration management method. The business knowledge management based configuration management method comprises the steps of: defining business requirements, a business process and a business model through data information stored in a knowledge base module, filtering, analyzing and matching through a rule engine to obtain business data, and uploading to obtain a business configuration item; inputting the business configuration item and an IT resource configuration item into a relational database module to obtain a relationship between the business configuration item and the IT resource configuration item; modeling based on the business data, the business configuration item and the IT resource configuration item to obtain the business model of the knowledge base module; analyzing and calling the business configuration item and the business model of the knowledge base module through the rule engine, and combining with the execution of an IT business model and a resource configuration item of a configuration management database module to obtain a configuration data management system of the business management and system running data. The business knowledge management based configuration management method improves availability and stability of an IT system.

The invention discloses an in-vehicle message authentication key management method. Two-stage keys, namely a master key and a communication key, are configured in all electronic control units which need to receive and send message authentication messages. The master key is used for generating a communication key and protecting the authenticity and integrity of a message in a communication key configuration process; the electronic control units, needing to receive and send message authentication messages, of all vehicles of one vehicle type use the same master key, and the master key is safely written in before the electronic control units are offline and stored in a server database at the same time. The communication key is used for calculating a message authentication code of the message authentication message, and a diagnostic tool is used for configuration before the vehicle is offline; each vehicle is divided into different communication groups according to a network architecture and a functional domain, and each communication group uses a communication key; the electric control unit in each communication group is divided into a master node and a plurality of slave nodes, and the master node is responsible for generating a communication key and completing pairing with the slave nodes. According to the invention, the complexity and cost of key management can be reduced, the identity authentication problem during key generation is solved, and the influence on the starting time is reduced.

The present invention relates to a plane display adjusting method comprising the following steps: initial setting the plane display and optical meter; delaying a preset time; displaying a test pattern on the plane display; delaying another preset time; repeatedly measuring the test pattern to obtain sufficient value by the optical measure till the enough data are obtained; repeatedly displaying the test pattern to show all the ones; finally, analyzing all the measuring value to calculate the correct parameters of the control circuit, and setting the parameters of the control circuit.

The invention relates to the field of the Internet, in particular to a big data positioning verification system based on peripheral information. Useful text information and azimuth information are automatically extracted and recognized by collecting image information around a mobile terminal user and input into a cloud server, and corresponding position range information is matched in map data through the cloud server to assist in correcting positioning deviation. The super-large storage capacity and the super-large computing capacity of the existing camera device and the positioning module ofthe mobile terminal and the cloud service terminal are fully utilized; the accuracy of user positioning is greatly improved, and the navigation efficiency is guaranteed. The invention further provides an online car-hailing big data positioning and checking system based on the user peripheral information. The system comprises a vehicle-mounted terminal, a mobile terminal and a cloud server. User peripheral information is automatically verified through the cloud server, and verification results are sent to navigation positioning modules of the vehicle-mounted terminal and the mobile terminal atthe same time; the positioning deviation is corrected; and the travel and online car-hailing service efficiency is ensured.

The invention discloses an electronic contract generation method, which comprises the steps of receiving a service request sent by a client, the service request comprising identity information of a client and a to-do service identifier; obtaining a corresponding electronic contract template according to the to-do business identifier, and returning the electronic contract template to the client; receiving a to-be-verified electronic signature and a to-be-verified fingerprint image corresponding to the electronic contract template sent by the client; acquiring an electronic signature and a fingerprint image pre-stored by the client from a blockchain network according to the identity information of the client; respectively comparing the electronic signature and the fingerprint image to be verified with a pre-stored electronic signature and a pre-stored fingerprint image; and if the electronic signature and the fingerprint image to be verified are consistent with the pre-stored electronicsignature and the pre-stored fingerprint image, generating an electronic contract according to the electronic contract template, the verified electronic signature and the verified fingerprint image. According to the method, the problem of low security of client identity verification in the existing electronic signature mode is solved.

The invention relates to a circuit for fast gain calibration of a digital-to-time converter of a phase-locked loop, and belongs to the technical field of analog integrated circuit design. The circuitis composed of a digital time converter, an error measurement module, a gain calibration module, a digital controller, a phase frequency detector, a charge pump, a voltage-controlled oscillator and afrequency divider. According to the circuit provided by the invention, the error measurer can provide a multi-bit error signal for the gain calibration module; the time-to-digital converter is set tooutput an error signal represented by a 4-bit binary system. On one hand, the error signal serves as the input of the integrator; on the other hand, the output is used as an error extractor; error signals can represent leading/backward states of two input signals of the time amplifier. In addition, the size of the specific leading/lagging quantity can be represented, which means that more information is provided for the LMS calibration module, thereby accelerating the LMS calibration process of the analog phase-locked loop, and greatly improving the calibration speed of the analog phase-lockedloop.

The invention relates to an operating method of an optical path interface switchover mechanism for a fiber channel test. The power supply end of a control module of the optical path interface switchover mechanism is connected with a control power supply, the input end of the control module is connected with a button diverter switch, and the output end of the control module is connected with a drive module. An optical path switchover module comprises two optomagnetic switches, four fiber sending interfaces and four fiber receiving interfaces. The output end of the drive module is respectively connected with the control ends of the two optomagnetic switches, two input ends and two output ends of the first optomagnetic switches are connected with the corresponding fiber sending interfaces and the corresponding fiber receiving interfaces respectively, the control module provides control signals corresponding to the conducted optical path switchover module, the optical path switchover module is connected with a relay protection device, an optical power meter or an optical attenuator through the optical path interface switchover mechanism, then the optical path switchover module is driven by the drive module to carry out multi-interface optical path switching, and therefore the optical path interface switchover mechanism can be in a normal operating state and in a test state of a protection test and the fiber channel test.

The invention relates to a vehicle certification verification method and device, a computer device and a storage medium. The method comprises the steps of obtaining a to-be-detected target image, wherein the target image is used for displaying a detection result of the certification of a vehicle; inputting the target image into a preset text detection model to obtain a plurality of text bars corresponding to the target image; verifying the text information in each text bar to obtain a verification result of the target image, wherein the verification result of the target image is used for representing whether the text information is accurate; inputting the target image into a preset seal detection model to obtain a detection result of the target image, wherein the detection result of the target image is used for representing whether the target image comprises a seal; and verifying the detection result of the vehicle certification displayed by the target image according to the verification result of the target image and the detection result of the target image to obtain a verification result. According to the method, the efficiency and accuracy of obtaining the verification result ofthe detection result of the vehicle certification are improved.

The invention relates to an SQL (Structured Query Language) injection vulnerability automatic detection platform and method based on self-adaptive random test. The detection platform runs on a Ubuntu 14.10 operating system. According to the detection platform, test cases are initialized; feature vectors of the test cases are analyzed and extracted; the test cases are subjected to vectorization representation; the test cases are sent to a test target by using an HTTP (Hyper Text Transport Protocol) request; a response of the test target is recorded; according to the response, whether an SQL injection vulnerability is found is determined; distances between the test cases are calculated; test cases for carrying out test next time are adaptively selected. The detection platform creatively proposes to use a self-adaptive random test method, and supports to rapidly and automatically detect the target in a customized mode; on the basis of arranging the rich test cases in the platform, users can add test cases according to use demands of the users, and the platform can automatically complete initialization, variation, feature extraction and calculation on the test cases, so that the optimal test effect is achieved.

The invention discloses a method and a system for evaluating the power transformation capacity requirement of a regional power distribution network. The method comprises the following steps: acquiringoperation data of the regional power distribution network; Establishing a power distribution network power balance model according to the operation data, and taking 110kV and 35kV of the power distribution network as a unified voltage level to carry out power balance; Determining the power consumption load of the whole society of the target year, and obtaining the power supply load of the targetyear according to the power consumption load of the whole society of the target year and the load parameters of the power distribution network power balance model; Obtaining a target annual power transformation capacity demand of the power distribution network according to the network supply load; And obtaining a power distribution network target annual power transformation capacity newly added demand according to the power distribution network target annual power transformation capacity demand. The system comprises an acquisition unit, a modeling unit, a first operation unit, a second operation unit and a third operation unit which are in communication connection in sequence, and the system is used for realizing the method.

The invention relates to a work method of an optical path switching interface mechanism used for a test of a relay protection device. The power supply end of a control module of the optical path switching interface mechanism is connected with a control power supply, the input end of the control module is connected with a button switch, the output end of the control module is connected with a driving module, an optical switching module comprises two optomagnetic switches, four sending fiber interfaces and four receiving fiber interfaces, the output end of the driving module is respectively connected with the control ends of the two optomagnetic switches, and the input ends and the output ends of the two optomagnetic switches are connected with the corresponding sending fiber interfaces and the corresponding receiving fiber interface respectively. The control module provides controls signals of an optical path switching module which is correspondingly connected, so that the optical path switching interface mechanism can be connected with the relay protection device or an optical power meter or an optical attenuator, the driving module drives the optical path switching module to conduct multi-interface optical path switching, and the optical path switching interface mechanism can enter in a normal operation state and enter a test protecting and fiber channel test state.

The invention discloses a method for sufficiently utilizing a memory redundancy unit. A memory comprises a storage unit and a redundancy unit, wherein the redundancy unit comprises a row redundancy unit and a column redundancy unit, and check codes are stored in the redundancy unit. The column redundancy unit can be used as a row check code, and the row redundancy unit can be used as a check code of the whole storage unit or partial storage unit. By storing the check codes in a standby redundancy unit on the premise that the storage unit of the memory is not damaged, the correctness and the integrity of data are checked by utilizing the check codes, and error correction is carried out, so that the purpose of sufficiently utilizing the redundancy unit is achieved, and the utilization rate of the redundancy unit is improved.