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34 results about "Point graph" patented technology

Spatial-domain image steganography method and system based on generative adversarial network

ActiveCN108346125ASimple designSmall number of structural parametersImage enhancementImage analysisCode moduleSteganalysis
The invention discloses a spatial-domain image steganography method and system based on generative adversarial network. The carrier image is converted into a probability graph through the generation network of a U-shaped structure, and then the probability graph is coded by utilizing a hyperbolic tangent coding module, a tampering point graph is generated, and the carrier image and the tampering point graph are added to generate a secret-carrying image; and then a steganography analysis network is used for distinguishing the carrier image and the secret-carrying image, and the classification result is fed back to the generation network in an error mode; and finally, the trained generation network and the coding module are combined together, as a final spatial-domain image steganography model, the carrier image is input into the whole model, and the secret-carrying image is output. The invention further discloses a space-domain image steganography system based on the generative adversarial network, and the system includes a generation network module, an encoding module and an image steganography module. According to the spatial-domain image steganography method based on the generative adversarial network, the security is obviously improved, and the design is simple.
Owner:SUN YAT SEN UNIV

Teaching knowledge point graph system based on network swarm intelligence

ActiveCN112148890ADepth in teaching fieldHigh-quality knowledge constructionData processing applicationsSpecial data processing applicationsPoint graphEngineering
The invention belongs to the technical field of intelligent teaching, particularly relates to a teaching knowledge point graph system based on network swarm intelligence, and aims to solve the problems of single knowledge point source, poor diversity, repeated knowledge creation and uneven knowledge point quality of an existing teaching knowledge point system. The method comprises the following steps: automatically extracting teaching plan keywords, inputting the teaching plan keywords into a teaching knowledge point map exploration module, and interactively exploring retrieved information bya user: if satisfactory knowledge is found, directly updating a teaching plan; and if not, supplementing knowledge in a man-machine cooperation mode. The man-machine cooperation means that the user and the AI knowledge producer construct new knowledge at the same time and fuse the new knowledge, and the new knowledge is cooperatively created by combining the capabilities of the user and the AI. And the intelligent expert recommendation system recommends experts to participate in verification of the newly constructed knowledge by analyzing the knowledge and the evaluation data of the user, andintegrates the new knowledge with the teaching knowledge point graph. The invention has the advantages of multiple knowledge point sources, high quality and less knowledge repeated creation.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI +1

Mark point graph structure for easy laser marking and preparation method thereof

The invention discloses a Mark point graph structure for easy laser marking; the Mark point graph structure comprises Mark points in a spiral form; the Mark point is used for monocrystalline PERC superposing with the selective emitter technology; a preparation method adjusts laser parameters, and lasers spiral Mark points on four corners of a silicon chip. The Mark point graph is a spiral graph, and can prevent problems encountered by a normal concentric circle graph; the spiral new graph can be fully compatible with existing laser doped equipment without increasing any cost, and is good in industrialization production process stability; the making time of the Mark point graph structure is 0.1-0.2s, thus shortening the whole SE structure making time, improving the production power, and increasing enterprise incomes; the Mark point graph structure and the making method are worthy of promotion.
Owner:TONGWEI SOLAR (ANHUI) CO LTD

Critical rainfall estimation method based on rainfall spatial distribution

The invention discloses a critical rainfall estimation method based on rainfall spatial distribution. The critical rainfall estimation method comprises the steps that firstly, estimating the confluence flow velocity in each grid unit in a hydrological response unit secondly, on the basis of the confluence flow velocity in each grid unit, obtaining a confluence time grid in the drainage basin; performing spatial interpolation on the time-interval rainfall data observed by the station to obtain a rainfall spatial distribution grid, and combining the convergence time grid to obtain a time-interval dynamic rainfall index; counting an accumulated dynamic rainfall index before a flood peak occurs in the flood process; then counting the tension water content saturation, namely the initial soil water content saturation, of the day before the flood process begins; finally, whether the flood is an over-alarm flood is judged, and making a cumulative dynamic rainfall indicator - initial soil watercontent saturation scattering point graph on the basis of multiple floods and i, marking points corresponding to the overwanted flood, and drawing a critical rainfall line in combination with the points corresponding to the overwanted flood.
Owner:HOHAI UNIV

Distribution network project management current situation evaluation method and apparatus

The embodiment of the invention provides a distribution network project management current situation evaluation method and apparatus, and belongs to the data processing field. The distribution network project management current situation evaluation method includes the steps: acquiring a plurality of project data prestored in a local database; based on material quantity and financing volume, drawing a point graph; based on a first preset rule, acquiring the projects, to be analyzed, displayed on the point graph; performing clustering operation on the projects to be analyzed according to a second preset rule, and obtaining a plurality of clusters; acquiring the standard characteristic graph of each cluster; acquiring the characteristic analysis graph of each project to be analyzed in each cluster; and based on the characteristic analysis graph and the standard characteristic graph, acquiring a problem statistical graph. The distribution network project management current situation evaluation method can obtain the differences between the characteristic analysis graph and the standard characteristic graph by comparing the characteristic analysis graph with the standard characteristic graph one by one, so as to evaluate the project to be analyzed by means of the meaning represented by the differences to infer the total trend of the existed problem in the project to be analyzed and provide basis for the decision of modifying problems for a leader layer, a management layer and an executive layer.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO +1

Electronic chart position point data simplification method

The invention discloses an electronic chart position point data simplification method, which comprises the following steps of: 1, dividing chart position points into three types, namely point chart layer discrete position points, line chart layer continuous position points and surface chart layer continuous position points, and respectively processing the three types of chart layer position pointdata; 2, for the discrete position point data of the point graph layer, the discrete position points are continued according to a distance or byte rule, a reference position point of each position point is determined, and then each position point is represented by a relative coordinate relative to the reference position point; and 3, for the line and surface layer data, processing the initial position points of all the line segments according to the step (2), taking the midpoint of two adjacent position points as a reference position point for each group of continuous position points, and representing the line and surface layer position points by using the relative coordinates relative to the reference position point. And 4, storing the relative coordinate data, and generating an electronic chart file. The electronic chart precision is maintained, the chart file is greatly simplified, the storage space is reduced, and the processing efficiency is improved.
Owner:HARBIN ENG UNIV

Terminal and system for detecting leakage of tap water pipeline

The invention discloses a terminal and a system for detecting leakage of a tap water pipeline, and relates to the field of pipeline leakage detection. For mainly aims to solve the problems that the leakage point of the tap water pipeline detected by satellite remote sensing detection is high in false alarm rate and low in checking efficiency of the tap water pipeline, the terminal and the system comprise a PC end system, a mobile phone end system and a leakage point working card system, wherein the PC end system comprises a receiving module, an overlapping processing module and a positioning module, wherein the receiving module is used for receiving a leakage point coordinate information diagram of a leaking region detected by the satellite scanning detection, the overlapping processing module is used for coinciding a regional leakage point graph, a regional high-definition map and a regional pipe network diagram accurately through an image superposition technology to generate a leakage point comprehensive information diagram, and the positioning module is used for positioning the position of a checking worker and the position of a leakage point to be checked. The terminal and thesystem can accurately evaluate the specific position of the leakage, so that the checking range is greatly reduced, the checking efficiency of the tap water pipeline is improved, and the labor cost isreduced.
Owner:湖南力乐利环保科技有限公司

Map segmentation method and device, pose estimation method and equipment terminal

The invention relates to a map segmentation method and device, a pose estimation method and an equipment terminal. The map segmentation method comprises the following steps: segmenting a map; acquiring map point data and constructing a corresponding point graph according to the map point data, wherein the point graph comprises nodes formed by map points and corresponding edges; measuring and estimating a to-be-estimated state variable corresponding to each node in the point diagram, and obtaining corresponding measurement and estimation values, wherein the to-be-estimated state variables comprise homogeneous coordinates of the nodes and corresponding sensor when the nodes are acquired; calculating the inter-point correlation between any two adjacent nodes in the point graph according to the measurement and estimation values; judging whether the inter-point correlation is smaller than a preset correlation threshold value or not; when the correlation between the points is smaller than apreset correlation threshold value, removing the edges corresponding to the corresponding adjacent nodes so that the static points and the dynamic points can be separated to complete map segmentation.The map segmentation method eliminates the influence of the dynamic points, and a foundation is laid for subsequent pose estimation.
Owner:ZHEJIANG UNIV

Image enhancement processing method applied to correlated imaging

The invention discloses an image enhancement processing method applied to correlated imaging, and the method comprises the steps: carrying out the correlated calculation of reference arm light field sampling data and signal arm light intensity response data, and obtaining a correlated imaging result graph; calculating a normalized autocorrelation matrix and a full width at half maximum of a resultgraph; subtracting the product of the normalized autocorrelation matrix and the gain coefficient from the result graph to obtain a residual graph; iteratively calculating a maximum value point in theresidual error graph and a corresponding normalized autocorrelation matrix, and subtracting a product of the matrix and a gain coefficient from the residual error graph; counting the position and theintensity of the point into a net point graph; stopping iteration when an iteration termination condition is met; and performing convolution on the Gaussian function and the net point graph through half-height full-width fitting, so that a correlated imaging result graph of an aperiodic structure can be obtained. The method can solve the periodic repeated structure problem caused by insufficientspatial frequency sampling, improves the visibility and the signal-to-noise ratio of the correlated imaging result graph, and is high in anti-noise capability, high in calculation speed and good in practical effect.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Cubic object volume calculation method for eliminating noise based on depth image

The invention provides a cubic object volume calculation method for eliminating noise based on a depth image. The method comprises the following steps: acquiring the depth image and a gradient map ofa cubic object; classifying pixel points in the gradient map according to the gradient map, and obtaining segmented images of an edge point map, an upper surface, a left vertical plane and a right vertical plane of the depth image; carrying out edge line detection on the edge point graph, clustering and merging all detected edge lines to obtain a collinear edge line group set, and extracting angular points according to the longest edge line of each group to carry out pairing; achieving positioning of the cubic object; fitting the plane of the cubic object in a three-dimensional space accordingto the upper surface, the left vertical plane and the right vertical plane of the cubic object; removing noise points on each surface through multiple times of fitting, acquiring an ideal point set corresponding to each surface, acquiring the contour boundary and corner points of each surface according to the ideal point set, acquiring the length, width and height of the cubic object are obtainedaccording to the coordinates of the corner points in the three-dimensional space, and calculating the volume of the cubic object. The volume of the cubic object can be accurately calculated.
Owner:南京鑫和汇通电子科技有限公司

Medical moxibustion for moxibustion therapy of irregular menstruation

The invention belongs to the field of moxibustion therapy supplies, and relates to a medical moxibustion for a moxibustion therapy of irregular menstruation. The medical moxibustion is mainly characterized in that the surface of existing moxibustion wrapping paper is laid with moxibustion therapy landmarks and acupuncture-point names of corresponding acupuncture points and is provided with moxibustion therapy acupuncture-point graphs, arbitrary quantities of drugs such as aconitum napellus, galangal, anemarrhena asphodeloides, radix rehmanniae, codonopsis pilosula and cyperus rotundus are added into a core body of each acupuncture-point moxibustion therapy section. Compared with the prior art, the medical moxibustion can help to guide users to accurately grasp corresponding acupuncture points, positions, orders and time of the moxibustion therapy, the moxibustion is convenient to use and has no side effect, and the effect of the moxibustion therapy is significantly improved.
Owner:河南绿莹艾草制药有限公司

Block replacement generation type information hiding and recovering method, equipment and medium

The invention belongs to the crossing field of information security and carrier-free information hiding, and discloses a generation type information hiding and recovering method, equipment and a medium. During hiding, a blindage is converted into a binary noisy point graph as a secret-free blindage; the positions of random secret embedding sample small blocks areobtained from the secret-free blindage by the secret key, candidate random sample small blocks with the number consistent with the number of binary noisy points of the secret embedding position sample small blocks are generated, and the sample small blocks consistent or having the maximum difference are selected as coding sample small blocks; and a secret-containing blindage is generated by replacing and scrambling the secret-embedded position sample small blocks with the coded sample small blocks. During recovery, a coded sample small block and a random secret embedding position are generated by a secret key, and secret information is extracted through comparison of the secret-containing blindage graph small block, the secret-free blindage graph small block and the coded sample small block. Compared with an existing method, the method of the invention has the advantages that modification embedding is not involved, splicing traces are not generated, a secret-containing blindage repetition mode is eliminated, a secret information coding space is hidden, and good anti-attack capacity and visual quality are achieved.
Owner:SHAANXI NORMAL UNIV

Project progress visual management method and system

ActiveCN113435656AGuaranteed accuracyReduce the difficulty of convergenceForecastingResourcesPoint graphConstruction engineering
The invention provides a project progress visual management method and system, and the method comprises the steps: predicting the project data of each construction region at a future moment, and the project data comprises the number of construction people, a predicted completion construction period, and the number of remaining construction projects, wherein, according to the key point graph of the constructors at the current moment, the key point graph of the constructors at the future moment, and the predicted completion period and the remaining construction project number of each construction area at the current moment, predicting the predicted completion period and the remaining construction project number of each construction area at the future moment; and monitoring whether the project progress is abnormal or not according to the project data of each construction area at the current moment and the future moment. The predicted completion construction period and the remaining construction project number of each construction area at the future moment are predicted, the construction progress of constructors in the period from the current moment to the future moment is considered, and the predicted predicted completion construction period and the remaining construction project number are more accurate.
Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS

Interest point duplicate removal method and device based on graph neural network, equipment and storage medium

The invention relates to an interest point duplicate removal method and device based on a graph neural network, computer equipment and a storage medium. The method comprises the following steps: acquiring all interest points in a target territorial range to be subjected to duplicate removal, and constructing an interest point diagram based on a geographic position according to all the interest points; screening out multiple pairs of interest point repeated pairs from all interest points, and labeling the multiple pairs of interest point repeated pairs to obtain multiple pairs of seed interest point repeated pairs; iteratively training the graph neural network model according to the interest point graph and the multiple pairs of seed interest point repetitive pairs to obtain a trained graph neural network model; processing the interest point diagram through a trained graph neural network model, and determining all interest point repeated pairs in all interest points according to a processing result; and deleting any one interest point in each interest point repeated pair. According to the embodiment of the invention, the method can improve the deduplication effect of the points of interest, is efficient and reasonable, and is wide in application range.
Owner:深圳依时货拉拉科技有限公司
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