46results about How to "Meticulously divided" patented technology

The invention discloses an image classification method based on the feature correlation of frequency domain direction, which mainly overcomes the shortages that the existing method has high calculation complexity, low classification precision and low robustness on image size variation. The method comprises the following steps of: (1) selecting a texture sample image and classifying the texture sample image into an image data set of training sample and an image data set of test sample; (2) implementing 2 dimensional fast Fourier transformation on the training sample image and dividing frequency domain direction subband according to the frequency and direction of the Fourier surface to obtain a frequency domain direction feature matrix; (3) calculating and obtaining a correlation pair sequence according to the correlation among subband features of the frequency domain direction feature matrix; (4) using unitary linear regression model for calculating the classification feature parameters of each correlation pair to form a classifier; (5) fitting the frequency domain direction features of the test sample image with the classifier parameters to obtain a classification label of the test sample; and (6) repeating step (5) to obtain the classification labels of all test samples. The i image classification method can be used for classifying the Brodatz texture images and the SAR images.

The invention relates to a microseismic wave monitoring method and system based on steam-assisted gravity oil drainage, and the method comprises the steps: arranging a detection device nearby a monitoring region, and starting the detection of a microseismic event; enabling a microseismic signal to be processed initially in an automatic manner after a monitoring substation receives the microseismic signal, and then transmitting the microseismic signal to a central processing station; enabling the central processing station to carry out the analysis and calculation of the data, and obtaining the spatial and time distribution data of the microseismic fracture energy; explaining the occurrence time, spatial distribution and size of the fracture, and determining the distribution range and occurrence time and time of a steam cavity. The invention also relates to a system, and the system comprises a ground monitoring module and an underground monitoring module. The ground monitoring module and the underground monitoring module are respectively used for receiving and processing the microseismic signal data received on the ground and in the observation well. According to the invention, the method effectively improves the event positioning precision under the complex stratum conditions. A microseismic monitoring positioning terminal is simple and reasonable in structural design, and can achieve the real-time and continuous monitoring of the microseismic signal.

The invention discloses an ultra-low power consumption digital baseband system based on an ultrahigh frequency RFID tag chip, and belongs to the technical field of radio frequency identification. Thesystem comprises a power consumption control module, an initialization module, a lead code recognition module, a decoding module, a command analysis module, a state control module, a code preprocessing module, a code output module, a safety control module, a true random number interface and a memory interface. According to the invention, a reader signal demodulated by the RFID chip radio frequencyanalog front end can be received, decoding and command analysis are carried out, responsive label state conversion is carried out, and then a correct response signal is output and returned to the radio frequency analog front end. The system meets the GJB7377.1 protocol requirement, supports safety identification and safety communication, and is an important improvement on the prior art.

The invention discloses a method and device for determining a vehicle safe area, electronic equipment and a storage media and relates to the field of intelligent traffic. The method comprises the following specific realization steps: determining the type of an obstacle target within a preset range around a vehicle; searching correspondence relation between type and speed according to the type of the obstacle target, and determining the speed of the obstacle target; and dividing a safe area of the vehicle according to the speed of the obstacle target. The method can improve accuracy of divisionof the vehicle safe area. The scheme can be used in the field of autonomous driving, especially autonomous parking.

The embodiment of the invention provides a self-adaptive routing method for data packets in a two-dimensional Mesh network and electronic equipment. The method comprises the steps of setting a virtualdimension e if the sum of distances from a source node of a target data packet to a target node in an x-dimensional direction and a y-dimensional direction is not zero, and performing virtual sub-network division on the two-dimensional Mesh network by utilizing the virtual dimension e, the x-dimension and the y-dimension; correspondingly dividing the virtual sub-networks, respectively setting corresponding data packet classifications, and combining the virtual sub-networks based on the virtual dimension e; and based on the source node and the destination node of the target data packet, determining the data packet classification to which the target data packet belongs, and based on the data packet classification to which the target data packet belongs, enabling the target data packet to enter a corresponding merged virtual sub-network for routing. According to the embodiment of the invention, the channel utilization rate of the two-dimensional Mesh network can be effectively improved,and the channel usage amount is reduced, so that the data transmission efficiency is effectively improved.

The invention belongs to the technical field of hyperspectral remote sensing analysis, and particularly relates to a method for calculating the Al-OH absorption position of muscovite by using hyperspectral data. The method comprises: 1, extracting muscovite type minerals, and recording the result as result (Muscovite); 2, carrying out wave band calculation on aviation hyperspectral data, and recording the calculation result as result (Al-OH); 3, calculating the intersection set of the treatment result of the step 1 and the treatment result of the step 2, and recording as result (mus-wavelength); and 4, carrying out density division on the result obtained in the step 3. According to the present invention, based on the aviation hyperspectral data in the existing spectral resolution, the muscovite type mineral unit is extracted, the Al-OH absorption peak position of the muscovite type mineral is calculated through the wave band calculation, and further the muscovite type mineral is subdivided according to the absorption peak position so as to be well used for mineral exploration.

The invention relates to a feature recognition library construction method and device, a traffic recognition method, computer equipment and a storage medium. The feature recognition library construction method comprises the steps of obtaining first traffic and a message set obtained by analyzing the first traffic; according to the classification field of each message in the message set, dividing the traffic with the same classification field in the first traffic into the same set; according to the transmission parameter information of each message in the message set, clustering the traffic with the same classification field in the same set to obtain a plurality of traffic clusters; obtaining a second flow and a function category corresponding to the second flow; according to the similarity between the second traffic and each traffic cluster in the plurality of traffic clusters, extracting identification features corresponding to the function categories from the traffic clusters; and constructing a feature recognition library according to the recognition features and the function categories corresponding to the recognition features. By adopting the method, the accuracy of feature recognition in the feature recognition library can be improved, so that the accuracy is higher when the feature recognition library is adopted for traffic recognition.

The invention discloses a network security communication system based on a block chain smart contract, and belongs to the technical field of digital information transmission. The system comprises a network isolation module, a user-defined configuration module, an authorized access module, an intelligent contract module, a certificate management module, an automatic deployment module and a sentry verification module. Network isolation is carried out through a network isolation module by adopting an ebpf network firewall and utilizing a micro-segmentation technology; through the custom configuration module, a system administrator configures custom resources and authorization rules on the platform and initiates voting; the administrator votes and manages the management event through the trusteeship and security contract on the block chain by using the authorization access module; querying a contract through an intelligent contract module to obtain a corresponding state change; generating a CA certificate by using a certificate management module; automatically deploying a client and a service team sentinel by using an automatic deployment module according to CA certificate information injection; and the guard verification module is used for accessing a specified interface.

The invention relates to a method for dividing an open type TBM construction data tunneling cycle. The method comprises the following steps that A1, for each TBM tunneling cycle, parameter data of theTBM tunneling cycle are acquired after the TBM tunneling cycle; A2, based on the parameter data of the TBM tunneling cycle, division processing is performed on the TBM tunneling cycle, and a rising segment in the TBM tunneling cycle is determined; A3, the parameter data corresponding to the rising segment in the TBM tunneling cycle are acquired based on the rising segment in the TBM tunneling cycle and the parameter data of the TBM tunneling cycle; and A4, geological parameters in the TBM tunneling cycle are predicted by adopting a preset prediction algorithm according to the parameter data corresponding to the rising segment in the TBM tunneling cycle, and a prediction result is obtained. According to the method, the performance parameters of cutter disc torque equipment and two equipment control parameters such as the tunneling speed and the cutting disc rotating speed are utilized, the empty push segment, the rising segment, the stable segment and the stop segment of the open typeTBM tunneling cycle can be effectively divided, and the tunneling cycle division is more accurate and detailed.

The invention provides a clustering method and system based on core group mining and opinion leader identification results. The clustering method comprises the following steps: dividing a propagationnetwork user into an opinion leader, a de-intersection core group and other users; constructing a hierarchical propagation network model wherein nodes are users in the three classes, and propagation behaviors among the users serve as paths among the corresponding nodes; by obtaining the number of times the propagation behavior occurs, acquiring different comprehensive index values of different propagation directions of the middle layer and the bottom user, and a de-intersection core group-integrated indicator value table and other user-integrated indicator value tables are constructed; dividing the opinion leader into credible opinions. Leaders and untrustworthy opinion leaders; grouping users who go to the core group and other users according to the core group-combined indicator value table and other user-integrated indicator value tables. According to the method and the system, the core group mining result and the opinion leader identification result are fully utilized to realize user grading based on the event participation degree.

The invention proposes a user right control method and apparatus. The control method comprises the steps of receiving a control command sent by a user; reading a preset script and judging whether the user has a right of executing the control command or not; and if yes, then executing the control command. According to the user right control method and apparatus, the execution right of the user is limited through the preset script, so that the right of the control command can be subdivided, the flexibility of the control right of the user to the command is effectively improved, and the user has an independent control right.

The invention discloses a projector convenient to calibrate a projection position and good in stability. The projector comprises a projector body, lifting mechanisms, a fixing mechanism and an air passage. A bottom plate is fixed with the lower surface of the projector body through bolts. A rotating rod is mounted below the middle position of the bottom plate. A supporting plate is arranged on theouter side of the rotating rod. A rotating mechanism is mounted below the rotating rod. The lifting mechanisms are installed at the four corners of the outer edge of the supporting plate correspondingly. A mounting box is connected below the lifting mechanisms. The fixing mechanism is connected with the lower portion of the mounting box. A lifting motor is mounted in the mounting box. A transverse plate is fixed on the outer surface of the inner side of the mounting box. An air pipe is mounted on the lower surface of the transverse plate. A micro air pump is fixed on the middle of the upper surface of the transverse plate, and a connecting pipe is mounted at the joint of the micro air pump and the air pipe. According to the invention, the accuracy of adjusting the calibration projection position of the projector is improved, and the projector is adsorbed on a desktop through negative pressure, thereby facilitating the improvement of the fixing stability of the projector.

The invention relates to an open type TBM tunneling cycle division method, a surrounding rock grade prediction method and a lithology prediction method. The open type TBM tunneling cycle division method comprises the steps that for each TBM tunneling cycle, parameter data of the TBM tunneling cycle are obtained after the TBM tunneling cycle, wherein TBM tunneling cycle parameter data comprises cutterhead torque data, tunneling speed data and cutterhead rotating speed data in the TBM tunneling cycle; and on the basis of the parameter data of the TBM tunneling cycle, the TBM tunneling cycle is divided, and an empty pushing section, an ascending section, a stable section and a shutdown section, sequentially adjacent to each other, of the TBM in the tunneling cycle are determined. The invention also relates to a surrounding rock grade prediction method. The surrounding rock grade prediction method comprises the following steps: acquiring second data in each tunneling cycle to be predicted; and inputting the second data into the trained classification model to obtain a classification result.

The invention discloses a six-level assembly line CPU based on an RISC-V instruction set. The CPU can realize an RV32I basic instruction set, a multiplication instruction and a CSR read-write instruction, and is provided with an interrupt register to suspend an assembly line; the CPU has the remarkable characteristics that the CPU has six levels of assembly line structures, namely an IF level, an FD level, a CSG level, an EXE level, an MEM level and a WB level, and has a higher dominant frequency; related circuits are designed for solving the risk problems in the assembly line; the data risk is solved by utilizing internal forward pushing, the load_use risk is solved by utilizing an assembly line pause method, and the control risk is solved by utilizing a static prediction method. The CPU has the characteristics of small area, low power consumption and multiple functions, and can be widely applied to the Internet of Things and embedded fields.

The invention relates to the technical field of network security, in particular to an APT attack detection method based on an event relation directed graph in network full traffic, which comprises the following steps of: S1, acquiring bypass traffic by using deep packet analysis to obtain real-time network metadata; S2, analyzing the network metadata by using big data based on a hacker network technology, and generating a network event relation directed graph; and S3, constructing a network event attack technology directed graph based on a preset APT attack technology weighted directed graph, performing matching analysis on the network event attack technology directed graph and a preset APT attack technology weighted directed graph, calculating a connected component weight of the network event directed graph, and finally detecting a current APT attack result and generating an alarm prompt. According to the technical scheme, the APT attack detection method based on the event relation digraph in the network full traffic is comprehensive and reliable in data analysis, higher in detection accuracy, capable of saving storage resources and convenient for backtracking, querying and analyzing historical data.

The invention provides a roadway axial full-length impact risk evaluation and risk solving method based on a momentum principle. The method comprises the following steps: selecting a detection point at the side part of a roadway; if the detection point is a special high-stress concentration area, judging that the detection point is a high-impact dangerous point; if the detection point is a general high stress concentration area, measuring the width of a throwing body at the detection point; and according to the negative correlation between the width of the throwing body and the impact danger, judging the danger level of the detection point. After the technical scheme is adopted, compared with the prior art, the method has the advantages that more detailed impact danger area division can be carried out in the whole axial direction of the roadway, the high-impact danger point can be accurately positioned, the roadway rock burst prevention and control problem is more focused and clear, the roadway rock burst prevention and control workload is greatly reduced, and the anti-impact cost is effectively reduced.

The invention belongs to the technical field of reversible information hiding, and provides a reversible information hiding method and system based on image texture guide prediction. The method comprises the following steps: distributing image pixels according to a chessboard type pattern, and dividing the image pixels into a shadow layer and a blank layer; calculating prediction errors and fluctuation values of all pixels of the shadow layer, and constructing a prediction error histogram of the shadow layer; calculating prediction errors and fluctuation values of all pixels of the blank layer, and constructing a prediction error histogram of the blank layer; obtaining a dense shadow layer according to the prediction error histogram of the shadow layer and the fluctuation sequence of the shadow layer; obtaining a secret-carrying blank layer according to the prediction error histogram of the blank layer and the fluctuation sequence of the blank layer; and combining the secret-carrying layer shadow layer and the secret-carrying layer blank layer to obtain a secret-carrying image.