126 results about "Contour line" patented technology

The invention relates to the technical field of tunnel and underground engineering construction, and discloses an intelligent closed-loop control system and method for a tunnel construction section contour, and the method comprises the steps: collecting geological-geometric data through the fusion of a three-dimensional laser scanner and a geological radar before blasting; dynamically generating a theoretical blasting contour line and adaptive blasting parameters through a convolutional neural network; iMU positioning and a PID controller are combined to realize millimeter-level accurate control of the drill boom; generating a three-dimensional deviation field by adopting an iterative point cloud registration algorithm after blasting; when the deviation exceeds a threshold value, triggering incremental learning to optimize model parameters; and finally, closed-loop iteration is formed. Through multi-source data fusion, contour and parameter intelligent generation, precise execution control, three-dimensional deviation field feedback and an incremental learning mechanism, a complete intelligent closed-loop control system is constructed, the limitation of traditional blasting design depending on experience is broken through, and the precision, efficiency and economic benefits of tunnel construction are remarkably improved.

The invention provides a sea target drifting trajectory prediction method and system based on a Transform-GRU and MDN mixed depth model. The method comprises the steps of S1, obtaining initial data of a search and rescue task and constructing a target feature vector about a search and rescue target type; s2, historical environment field data and future environment field forecast data are acquired, data preprocessing is performed, and a historical environment field time sequence feature sequence and a future environment field time sequence feature sequence are acquired; s3, performing dynamic weighted fusion on the target feature vector and a historical environment field time sequence feature sequence; s4, the fusion features are input into a Transform encoder for feature extraction, and context vectors are obtained; s5, taking the context vector as the initial hidden state of a GRU decoder, and predicting the final position of the search and rescue target according to the input by the GRU decoder; s6, enabling the output of the GRU decoder to pass through a mixed density network (MDN), and obtaining a probability distribution parameter representing a future position; and S7, generating and drawing a target probability density contour map in real time according to the probability distribution parameters, and performing visual display.

The embodiment of the invention provides a site selection method of a pumped storage power station and related equipment, and belongs to the technical field of information processing. The method comprises the following steps: acquiring and identifying a river system and a contour line through topographic data; traversing all river systems, identifying a source node, a confluence node and an outflow node according to the beginning and end of the water system and the intersection condition of the water system, and generating discrete nodes according to a communication path so as to mark each water system node in the river system; calculating a reservoir area range and an optimal dam line of a reservoir at each water system node according to the water system nodes and the contour lines; generating a closed image according to the optimal dam line and the contour line, and calculating the limit storage capacity, the water level area curve and the water level storage capacity curve of the reservoir at the water system node; and screening to obtain a target reservoir through preset dam characteristic parameters according to the limit reservoir capacity, the water level area curve and the water level reservoir capacity curve of the reservoir at each water system node. According to the embodiment of the invention, omission of a high-quality dam site can be effectively avoided.

This invention discloses a three-dimensional modeling method for the true shape of boulders in a soil-rock fill slope, comprising: Step 1, acquiring the two-dimensional projections of the boulders of the actual soil-rock fill slope onto three orthogonal planes; Step 2, obtaining the coordinates of the two-dimensional projection contour points, calculating the centroid of the contour line, moving the centroid to the origin of the coordinate system, and recalculating the coordinates of the contour points; Step 3, segmenting the contour line into spatial regions based on the projections of the boulders on the XOZ and YOZ planes, and randomly reconstructing a contour line; Step 4, performing compatibility analysis on the XOY plane and correcting the reconstructed contour line; Step 5, randomly constructing several contour lines within each spatial region; Step 6, generating a three-dimensional geometric model with a true shape based on the contour lines. The method of this invention constructs a three-dimensional realistic model based on the true shape of the boulders, resulting in higher accuracy in subsequent finite element analysis of the stability of the soil-rock fill slope from a heterogeneous perspective.

The present application relates to a kind of groundwater organic pollution tracing analysis method and system based on isotope, the method comprises: collecting the pollutant parameter of monitoring point in multiple time intervals;Build target monitoring point set;Its coverage area is called target area;Based on typical time interval, the pollutant parameter of each monitoring point in analysis target monitoring point set is found to obtain the contour line corresponding to pollutant parameter type;The area in the contour line of each pollutant type high pollutant parameter is regarded as suspected area;Determine target pollution source in suspected area based on isotope parameter.The present application fully utilizes big data monitoring resources from space and time, combines pollutant parameter itself and optimally uses isotope analysis resources, and the tracking of pollution source is guided to provide efficient multi-source burst differentiating pollutant tracing.

The application provides a method for calculating the ground stress based on the whole process formation leak-off test of a directional well, comprising the following steps: performing the whole process formation leak-off test on the target directional well and recording the test data; calculating the horizontal minimum ground stress and the overburden pressure according to the test data of the whole process formation leak-off test and the rock mechanics characteristic parameters of the target directional well; calculating the fracture pressure value under all possible arrangement combinations of the horizontal maximum ground stress and the horizontal minimum ground stress at the well deviation azimuth of the target directional well according to the stress distribution around the well section of the formation leak-off test well and the tensile failure criterion; drawing the contour map of the fracture pressure to establish the ground stress query chart of the target directional well; and querying the horizontal maximum ground stress corresponding to the calculated horizontal minimum ground stress in the ground stress query chart. The application calculates the ground stress based on the test data of the whole process formation leak-off test of the target directional well, and effectively improves the accuracy of the calculation result of the ground stress size.

The invention relates to the technical field of intelligent manufacturing and numerical control machining, and particularly discloses a three-dimensional volute model revolution surface turning blank contour line extraction method which comprises the steps that a three-dimensional volute model is input, and all turning revolution surfaces are extracted from the three-dimensional volute model; traversing each turning rotation surface, constructing a plane, and intersecting the plane with the corresponding turning rotation surface to obtain an intersection line corresponding to each turning rotation surface; scanning each intersecting line around a rotating shaft to obtain a corresponding ring surface, and intersecting each ring surface by using the same reference plane to obtain a contour line of each ring surface on the same reference plane; all the contour lines are subjected to duplicate removal and sorting; connecting the sorted contour lines to obtain a closed line frame; and the closed wireframe is swept around the rotating shaft, so that a machined blank body of the three-dimensional volute model is formed. According to the method, various characteristics of the volute revolution surface can be accurately identified, and the method has certain generalization.

The invention relates to a method and device for determining a construction area of a switching station, computer equipment and a medium, and the method comprises the steps: determining an initial area for arranging the switching station based on a factory building outgoing line point, a length threshold value and a height threshold value, and removing an area, coinciding with an arrangement forbidding area, in the initial area to obtain an arrangement allowing area; determining a plurality of target contour lines on the basis of a preset elevation step length by taking a point, which has the shortest distance from the permitted arrangement area, in the lowest contour lines of the permitted arrangement area as a starting point; determining a plurality of first target points in the lowest contour line and the target contour line based on a preset plane step length; each first target point is used as a positioning point of the candidate arrangement area, a preset length and a preset width are used as the length and the width of the candidate arrangement area, and a target area with the minimum construction cost is determined from the candidate arrangement areas meeting the preset arrangement condition. According to the method, the target area which is suitable for construction of the switching station and has the minimum construction cost can be rapidly determined.

A road center line determination method, device, equipment and storage medium are disclosed. The method comprises: acquiring a first boundary contour line and a second boundary contour line on both sides of a target road; determining an outer bounding rectangle of the boundary contour line and a projection point of each boundary point on the outer bounding rectangle; extending a connecting line between each boundary point and the corresponding projection point, determining a first associated point intersecting the contour line, and taking a midpoint between each boundary point and the corresponding associated point as a feature point corresponding to the boundary point; based on the change direction of the boundary contour line, sorting each first feature point and each second feature point, and based on the sorted feature point sequence, determining a center line corresponding to the target road. Through the technical scheme of the embodiment of the present application, the determination efficiency and accuracy of the road center line can be improved, and the combined center line can perfectly retain the geometric shape of the original two lines.

The invention discloses a method for converting an elevation system contour line of a stock place to a 85 elevation datum, which comprises the following basic steps of: discretizing the contour line based on an adaptive sampling method of contour line curvature, and extracting node data on the contour line; elevation points are properly encrypted in a place with sparse contour lines by using a method for improving Kriging interpolation by using a gradient boosting tree, and elevation point data obtained by arrangement is converted into 85 elevation; according to a weighted soft constraint Delaunay triangulation algorithm, a triangulated irregular network is constructed by using 85-elevation point data, and contour lines are generated. The method provided by the invention has the advantages of being scientific, reasonable, easy to implement, high in production efficiency, wide in application range and the like, the curvature and characteristics of the contour lines are analyzed one by one by fully utilizing the contour lines of the elevation system of the stock place, and the variation characteristics of the complex space are captured more accurately; and the accuracy of conversion from the elevation line contour line of the stock place to the 85 elevation datum can be further improved.

The application discloses a component difference identification method and device in different version BIM models and a storage medium. The method comprises the following steps: selecting a component to be compared from different version BIM models; extracting contour lines of the component to be compared in each version BIM model; sampling the contour lines to obtain a key point set of the contour lines; sampling a surface of the component to be compared to obtain a description point set of the surface; calculating a logarithmic distance between each key point in the key point set and all points in the description point set; constructing a statistical histogram of the component to be compared according to the logarithmic distance; and identifying component differences according to the statistical histograms of the components to be compared in different version BIM models. The application can identify subtle differences of components, and improve identification efficiency and identification accuracy.

The present invention provides a method for determining contour lines and an image processing device. [Solution] The method includes: extracting a reference subblock containing an initial contour point from a target image; determining a plurality of template subblocks based on the reference subblock; recursively executing a plurality of steps to determine a contour point corresponding to each step; determining a search region in the target image as the i-th step of the plurality of steps; determining a plurality of candidate subblocks in the search region; obtaining a plurality of comparison results between each candidate subblock and each template subblock; selecting a reference subblock from the plurality of candidate subblocks based on the plurality of comparison results; determining a contour point corresponding to the i-th step based on the reference subblock; and determining at least a portion of the target contour line based on the contour point corresponding to each step.

The invention discloses a method for generating a concentration contour map in real time based on infrared alarm information. Comprising the following steps: S1, determining boundary coordinates of an infrared spectrometer calibration detection area, and collecting alarm information in real time; s2, generating a concentration distribution matrix base map; s3, obtaining a reduced matrix base map; s4, converting the reduced matrix base map into a concentration diffusion map with a gradual change effect; s5, converting the color distribution of the concentration diffusion diagram into a numerical field, extracting a contour line by using a Marching Square algorithm, and drawing the contour line; and S6, recovering the size of the contour map through a cubic spline interpolation algorithm, and uploading the real-time monitoring image of which the contour map is overlapped and displayed in the detection area to a client for display. The method has the beneficial effect that the distribution condition of the alarm substance concentration in the monitoring area of the infrared spectrometer can be visually displayed.

The application discloses a surveying-based binary structure small watershed division method and system, and particularly relates to the field of watershed division. Basic data processing of the application includes collecting and preprocessing topography, remote sensing and other data, establishing a basic database, converting vector contour line data into DEM and filling in depressions, generating a non-depression DEM, determining water flow direction by using a D8 algorithm, calculating cumulative flow, and generating a river network. The river channel is converted into a vector runoff network, the sub-watershed range is extracted and mapped, the outcrop point of underground river or karst spring is taken as a corrosion reference, the watershed outlet is determined in combination with the main river channel of a large river, and a complete correlation system is constructed. Finally, the development of the underground water system pipeline is determined through hydrogeological investigation, geophysical prospecting, drilling and pumping test, the results of comprehensive investigation, geophysical prospecting, drilling and pumping test are comprehensively considered to accurately correct the boundary of the underground water system, and the underground water system distribution map conforming to the actual conditions is formed in combination with remote sensing images and administrative division maps.

This invention discloses a method, apparatus, equipment, and medium for detecting over- and under-excavation in tunnels, relating to the field of intelligent detection technology in tunnel engineering. The method includes: acquiring raw point cloud data; reconstructing a watertight actual triangular mesh model based on Poisson surface reconstruction; calculating coordinate transformation parameters based on common control points to globally align the actual model with the design model; traversing the vertices of the actual model and calculating the three-dimensional deviation value by determining effective projection points; setting a virtual sliding section along the tunnel axis, analyzing the intersecting contour lines, and integrating to obtain the over- and under-excavation volume; establishing an error propagation model, using Monte Carlo simulation for uncertainty analysis, and generating confidence intervals and confidence levels for the deviation values; finally, generating an over- and under-excavation analysis cloud map and a quantitative analysis report with confidence interval identifiers. This scheme achieves robust deviation calculation, volume integration, and uncertainty quantitative analysis between the design model and the measured model.

The invention discloses an automatic reconstruction method and system for an isogeometric topology optimization result editable model, and the method comprises the following steps: obtaining an isogeometric topology optimization result, and obtaining hypersurface model data; extracting contour lines of each layer in a layered manner according to a set density threshold; arranging seed points through the contour line, dividing a background tetrahedral mesh, and deeply searching a mesh edge crossing a density threshold value; judging a corresponding relation between the contour lines, executing different reconstruction strategies according to different corresponding relations, and generating an NURBS curved surface by using an automatic skin technology and an adaptive fitting technology respectively; the contour lines at the opening are identified, the position relation between the cut area and the contour lines is determined, and cutting operation is executed to obtain a cut curved surface; and integrating the NURBS curved surface and the cutting curved surface, and outputting an editable entity. According to the method, the complexity of extracting the contour surface of the optimization result is effectively reduced, the precision of the result model is effectively improved, and the result has the advantages of editability and modifiability.

The invention relates to the technical field of data processing, and discloses an ore body positioning method and system based on a three-dimensional geological model. The method comprises the following steps: classifying drilling data according to numbers to establish a relational database, calculating a drilling space trajectory, extracting sample sections, connecting to obtain a profile contour line, extracting sample section midpoints to form an ore body midline, extrapolating along a tangential direction, and connecting through a triangulation network to obtain an ore body three-dimensional line frame; and calculating ore-bearing coefficients and mineralization intensity indexes, mapping the ore-bearing coefficients and the mineralization intensity indexes to a wireframe, determining an extrapolation distance according to a variable coefficient, and calculating a predicted resource quantity. The problems that in an existing ore body positioning method, data are managed in a decentralized mode, extrapolation depends on experience, subjectivity is high, mathematical quantitative characterization is lacked, and quantitative basis is lacked in resource quantity prediction are solved.

1. Name of the product in this design: Terrain Builder (Magnetic Contour Line). 2. Purpose of this design: This design is used to demonstrate terrain during teaching. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention is suitable for the technical field of meteorological data processing, and provides a height field and wind field mutual smoothing method based on physical rule constraints, which comprises the following steps: preprocessing a two-dimensional height field lattice point matrix hgtgrid, a two-dimensional wind field horizontal component lattice point matrix ugrid and a two-dimensional wind field vertical component lattice point matrix vgrid to obtain a wind speed and a wind direction, and performing mutual smoothing processing based on a bidirectional coupling relationship between the height field and the wind field, and outputting the height field and the wind field which are subjected to mutual smoothing when the number of cycles reaches a preset maximum number of iterations maxter. Therefore, by establishing a bidirectional dynamic coupling mechanism of the wind field and the height field, visual drawing of the contour line of the weather map is supported, and the method has the advantages of being high in physical consistency and overall coordination.

The application relates to the technical field of building model construction, in particular to a building BIM model construction method fusing GIS terrain and site information, which solves the technical problems of great design result safety hidden dangers and poor specification compliance in the process of complex geological condition slope modeling caused by the fixed slope ratio static modeling method in the prior art. The method comprises the following steps: discretizing a continuous three-dimensional space of a to-be-constructed slope into a two-dimensional grid matrix, and giving each grid node in the two-dimensional grid matrix with a rock layer inclination attribute and a cost attribute; in the two-dimensional grid matrix, taking a digging starting point as a search starting point, and determining an optimal path from the digging starting point to a surface boundary through an extended state space search algorithm; and generating an excavation contour line of a target section according to the optimal path.

The invention relates to the technical field of image synthesis, in particular to a method and device for constructing a superimposed sedimentary facies belt graph at a sedimentary unit level, and the method comprises the steps: obtaining multi-source information data of a target oil field; constructing a three-dimensional space distribution model based on the multi-source information data; obtaining isoline data and fault polygon data based on the three-dimensional space distribution model; obtaining the smoothed isoline data; obtaining corrected fault polygon data; splitting the combined fault polygon into a plurality of fault independent units; generating fault polygon data with upper and lower wall marks; obtaining a deposition unit level structure map of the target layer; obtaining a sedimentary facies belt graph of the target layer; and taking the sedimentary unit level structure map and the sedimentary facies belt map of the target layer as different map layers for superposition to obtain a plane structure map of the target layer. According to the method, the requirement of development field personnel for quickly drawing a two-dimensional plane graph with fault hanging and footwall and sedimentary facies distribution can be met.

The invention relates to the technical field of agricultural environment monitoring, and discloses a tea garden GIS (Geographic Information System) visual early warning system for carbon emission monitoring, which comprises the following steps of: firstly, extracting terrace ridge foot boundaries based on a digital elevation model, locking a uniform terrace spacing of the whole garden, and discretizing a slope into monitoring strips distributed along a contour line; then calculating an interflow intensity index by using the soil moisture content at the ridge foot, and determining a basic discharge potential by combining a biochemical inhibition attenuation model input by the pruned residues and a soil acidity constraint coefficient; further analyzing transmission time lag between adjacent strips by utilizing a step-by-step cascade transmission model, and performing space-time accumulation on the emission potential in the uphill direction to the downhill direction to generate final strip emission intensity with a time lag effect; and finally, mapping the data into an early warning level and carrying out striped dynamic rendering. The problems of space aliasing and time dislocation in slope tea garden monitoring are solved, and high-precision space-time dynamic early warning is achieved.

The invention discloses a grid map processing method, related equipment and a computer program product, and the method comprises the steps: converting an original grid map into a tri-state graph, carrying out the binarization processing, and extracting the contour line of an obstacle from a binarized image; and based on the contour line of the obstacle in the binarized image, performing masking processing on the tri-state graph, and determining an editable gap region in the tri-state graph through a masking form. And screening a first gap region meeting a gap credibility condition, and editing a grid state corresponding to the first gap region in the tri-state graph into an idle state. According to the invention, the accuracy of identifying passable gap areas such as door slots, corridors, narrow channels and the like is improved, and the map quality is improved.

This application relates to the field of 3D geological modeling technology and provides an automatic generation method for 3D geological models based on contour lines and maximum posterior probability. The method includes: acquiring the contour lines of the geological body to be modeled within a target area; discretizing the contour lines to obtain a set of 3D discrete points; acquiring the observed values ​​corresponding to the set of 3D discrete points, the variance of the observed value error at the spatial location of each discrete point, and the two-dimensional prior normal vector at each discrete point; constructing an objective function based on the acquired observed values, the variance of the observed value error, and the two-dimensional prior normal vector, with the goal of maximizing the posterior probability distribution of an implicit function; iteratively solving the objective function using the expectation-maximization algorithm to obtain the optimal implicit function; using the gradient of the implicit function to characterize the attitude of the geological body to be modeled; extracting the target isosurface of the optimal implicit function, and using the target isosurface as the 3D geological model of the geological body to be modeled. This application can improve the accuracy of 3D geological modeling.

The invention is suitable for the technical field of civil engineering computer aided design, and provides a dynamic fine modeling and contour line guiding-based earth excavation engineering quantity and opening line accurate calculation method, which comprises the following steps of: firstly, constructing a macroscopic triangulation network through sparse topographic data, and generating a theoretical excavation body model in combination with design parameters; determining a target area needing fine calculation; then, a refined triangulation network is constructed in the target area through detailed topographic data, and the excavation engineering amount is accurately calculated through Boolean operation of a theoretical excavation body model; and finally, taking the slope crest outer contour line of the theoretical excavation body as guidance, solving and sequencing the refined contour lines and connecting intersection points, and generating an accurate and normative excavation opening line. According to the method, through dynamic modeling from coarse to fine and a generation mechanism of contour line guidance, the problem that in the prior art, calculation efficiency, result precision and drawing normalization are difficult to consider at the same time is effectively solved.

The application discloses a kind of high-speed remote landslide movement path roughness degree quantitative characterization method, belong to geological disaster technical field, first obtain the remote sensing image data of target landslide, the DEM digital elevation data of target landslide and the landslide boundary data of target landslide, after processing, the elevation data of target landslide movement path is obtained, and it is de-trended, the elevation data of landslide movement path microtopography is obtained;According to the elevation data of landslide movement path microtopography, based on the fractal dimension calculation method of joint contour line is calculated, the fractal dimension after de-trend of target landslide movement path is obtained, and the path roughness coefficient of target landslide is calculated.The application calculation process is simple, wide application range, can quantify the roughness degree of high-speed remote landslide movement path under different spatial scales, and fully reveal the influence of microtopography in the process of landslide movement, provide more comprehensive roughness characterization.

The invention discloses a contour vector diagram generation method and apparatus, a storage medium, a device and a product. The method comprises the steps of obtaining a depth map covering a whole scene; constructing an agent model based on the depth map, wherein the agent model is a geometric representation of the scene surface; generating a cutting plane sequence with equal height spacing according to the proxy model; performing intersection calculation according to the cutting plane sequence and the proxy model, and extracting an intersection line as a contour line; and outputting a vector diagram file according to the contour line. According to the contour vector diagram generation method provided by the invention, the depth map is adopted to construct the proxy model and the adaptive cutting calculation is carried out, so that the contour vector diagram is efficiently generated in a large-scale scene, meanwhile, the balance between the calculation precision and the resource consumption is ensured, and unnecessary calculation waste is avoided.

This invention provides a digital measurement method and system for aircraft skin depression areas based on point cloud scanning, relating to the field of parts inspection technology. The method includes: acquiring point clouds of the skin surface; locating feature regions based on local curvature; extracting and fitting feature contour lines using projection and envelope methods; selecting measurement points on the contour lines; determining the search range on the opposite side; searching and calculating the shortest geodesic length between the two contour lines; establishing a cross-section at the geodesic endpoint and projecting the local point cloud; fitting a linear segment and determining the theoretical contour points based on a deviation threshold; calculating the projection compensation distance; and obtaining the final size of the depression area by combining the geodesic length. The advantages are: acquiring point clouds through 3D scanning eliminates the need for dedicated molds, reducing costs and improving inspection accuracy and efficiency; the feature extraction method based on local curvature perception accurately extracts the required feature contour lines; and the use of the shortest geodesic and projection distance compensation effectively reduces contour recognition errors, achieving accurate measurement of the depression area.

The invention discloses a CAD terrain gradient analysis and daily standard wind speed increase coefficient calculation method. The method comprises the steps that all vertexes of a target broken line in a contour line section CAD graph are extracted; according to the slope of a connecting line between two adjacent vertexes, extracting a transition line segment with a changed slope; calculating the height difference of the i-th transition line segment and the included angle between the i-th transition line segment and the vertical auxiliary line; calculating a first coefficient, a second coefficient and a third coefficient; and calculating a daily standard wind speed increase coefficient corresponding to the i-th transition line segment according to the sum. The method solves the problems that in CAD topographic map design, when line segments with changed gradients in broken lines of a contour profile map are manually extracted, batch processing of the broken lines is needed, time is wasted, and efficiency is low; meanwhile, the prior art lacks the function of automatically calculating the wind speed increase coefficient under the daily standard specification.

The invention relates to the technical field of training, in particular to a rapid and accurate decision method and system based on a training space terrain environment and electronic equipment, and the method comprises the steps: collecting elevation point cloud, a ground cover contour line and underground blindage structure data of a training space; generating a terrain grid model containing the gradient, the intervisibility and the masking coefficient; establishing a decision rule engine based on the terrain grid model; beidou positioning data and millimeter wave radar scanning data of the training equipment are received, and data matching is carried out; and calling a decision rule engine to calculate the motion feasibility of the equipment, the fire strike effective radius and the electromagnetic interference attenuation value. According to the invention, by collecting and processing the terrain data and combining the Kalman filtering algorithm to optimize equipment positioning, efficient fusion of the terrain information and the equipment state is realized, so that the real-time performance, the accuracy and the reliability of commanding and deciding are improved.