44 results about "3d topography" patented technology

1. Name of the product in this design: Graphical User Interface for Displaying Test Results in Electronic Equipment. 2. Intended use of this design: for use in an electronic device. 3. The key design features of this product are the graphical user interface displayed in the electronic device. 4. The image or photo that best illustrates the design points: Design 1 Interface Change State Diagram 1. 5. The hardware design is a conventional design, omitting the rear view, left view, right view, top view, and bottom view. 6. Design 1 is designated as the basic design. 7. Purpose of the graphical user interface: This graphical user interface is used to display and locate detection results, etc. Design 1's main view is the primary interface, with a circular icon control with a lightning shield displayed in the upper right corner. Design 1's interface change state diagram 1 shows the interface state obtained after clicking the circular icon control in the main view of Design 1, with multiple "location" controls displayed at the bottom of the interface. Design 1's interface change state diagram 2 shows the interface state obtained after clicking any of the "location" controls in Design 1's interface change state diagram 1, which highlights the corresponding location area on the 3D terrain map. Design 2's main view serves as the primary interface. Design 3 uses the main view as the primary interface to display the detection results. The main view of the design is the first interface, used to display the location results of the detection results. The map background (i.e., the three-dimensional topographic map background) in Designs 1 to 4 does not constitute part of the claimed design, and it represents the area as the content screen. The areas (i.e., multiple positioning areas) obscured by color blocks within the background of the three-dimensional topographic map in Designs 1 to 4 do not constitute part of the protected appearance design, and the areas referred to therein are content images.

An engraved solid piece carries data comprising specific information on a surface of the engraved solid piece. The surface is covered by a plurality of block structures, comprising at least a first block structure. Each block structure is a spatially restricted collection of modulated features and base features, which are spread over the surface of the engraved solid piece. Each modulated feature and each base feature has respectively a three-dimensional modulated-feature profile and a three-dimensional base-feature profile. Each of the modulated-feature profiles is the result of applying a corresponding modulation to one of the three-dimensional base-feature profiles, according to a specific, corresponding information. Each modulated feature further is a symbol, which is a transcription of a character of an alphabet. The alphabet is a collection of characters, which are distinct objects of well-defined elementary data. Each of the base features is an engraved elementary three-dimensional topographical element of the surface. Each of the modulated features is an engraved three-dimensional topographical element of the surface. At least a part of the data is transcribed by a code-block structure of modulated features, the code-block structure thereby constituting at least a part of a block structure corresponding to the at least one part of the data. The modulated features of the first block structure are arranged according to a first ordered map, the first ordered map comprising at least a first finite ordered set of first positions of the modulated features of a first code-block structure on the surface, the first block structure corresponding to a first part of the data, and the first ordered map further is configured to arrange the modulated features of the first block structure to constitute an aesthetic ensemble on the surface and render the respective symbols corresponding to the modulated features of the first code-block structure imperceptible to the human eye, but retrievable by means of a software-driven image-sensor / processor combination.

This invention discloses an integrated lidar and multispectral mapping drone, belonging to the field of mapping drone technology. It includes a drone body with a multispectral camera and lidar mounted on its bottom; it also includes a base, with a landing platform fixed to the upper surface of the base via a support rod. An outer cylinder is fixed to the upper surface of the base, and mounting holes are provided on the landing platform. An inner cylinder is rotatably mounted within these mounting holes. The sidewalls of the inner and outer cylinders are open, and the bottom of the inner cylinder is located inside the outer cylinder. An air inlet pipe is connected to the outer cylinder and connected to an external air source. An inclined air blowing pipe is connected to the top wall of the inner cylinder. This invention enables the drone body to simultaneously acquire high-precision three-dimensional terrain data and multi-band spectral information during a single flight, and after landing, it can efficiently and gently clean dust and water mist from the lens surface, ensuring the accuracy and stability of subsequent mapping operations.

This invention discloses a three-dimensional terrain construction method based on multimodal semantic constraints, belonging to the field of three-dimensional terrain modeling technology. This method acquires optical remote sensing images and digital surface models and constructs unified spatial reference data. Guided by multimodal semantic constraints, it performs joint semantic parsing of ground features to generate a set of semantic masks with structural consistency. Furthermore, based on the mapping relationship between semantic categories and surface physical attributes, it performs regional geometric reconstruction of the digital surface model to form three-dimensional terrain entities that conform to the spatial expression characteristics of ground features. Simultaneously, by parsing engineering cost documents and extracting spatially oriented engineering cost data, under spatial and semantic consistency constraints, it associates and maps engineering cost information with three-dimensional terrain entities, ultimately forming a three-dimensional terrain data result that integrates terrain geometric information and engineering economic attributes.

This application discloses a method, apparatus, electronic device, and storage medium for generating gait of a digital human. The method includes: acquiring three-dimensional terrain data of a virtual scene; constructing a terrain traction field of the virtual scene using the three-dimensional terrain data; wherein the terrain traction field is a data set representing the traction intensity of each voxel of the three-dimensional terrain on the feet of the virtual digital human and the suggested landing posture; predicting the gait of a target virtual digital human based on the terrain traction field of the virtual scene to generate an optimal landing point sequence; determining the current target landing point from the optimal landing point sequence; adjusting the gait data of the target virtual digital human landing at the current target landing point based on the data at the current target landing point in the terrain traction field of the virtual scene, and rigidly locking the foot when it touches the ground to obtain the current gait of the target virtual digital human.

The application discloses a three-dimensional terrain modeling analysis and adaptive navigation system and method, and relates to the technical field of navigation.The laser radar is used for acquiring point cloud data of the region where the device to be navigated is located in real time; the IMU is used for measuring the acceleration and angular velocity of the device to be navigated in real time; the data fusion sub-module is used for pre-processing the point cloud data, acceleration and angular velocity in real time, and fusing the pre-processed data; the three-dimensional map modeling sub-module is used for constructing a three-dimensional map model according to the point cloud data in real time by using a SLAM algorithm; the three-dimensional terrain analysis module is used for determining the terrain features of each point in the three-dimensional map model in real time; and the adaptive navigation module is used for planning a path for the device to be navigated according to the three-dimensional map model and the terrain features of each point, so that navigation is realized.The application can improve the precision of original data, and then improve the positioning precision, and realize accurate navigation.

This invention relates to the field of aviation navigation and simulation technology, specifically disclosing an airborne scene-terrain matching assisted navigation method and a highly realistic simulation platform. The method involves acquiring measured terrain information via an airborne camera, and collecting SAR image information, altimeter and atmospheric sensor information via radar. A matching algorithm between the camera terrain and radar images is used to match the measured data with pre-stored information, outputting the position correction error for inertial navigation to achieve inertial navigation correction. Even in complex electromagnetic environments without satellites or in electromagnetic silence, combined inertial navigation and matching navigation can still be achieved, ensuring stable flight of the aircraft. Simultaneously, a highly realistic 3D visual simulation platform is constructed, including a digital aircraft, flight control law, inertial navigation, 3D terrain, and various airborne equipment, providing full-process simulation support for the design, implementation, and testing of airborne scene-terrain matching assisted navigation systems. This invention solves the problem of aircraft navigation relying on satellites in complex electromagnetic environments, improves the anti-interference and reliability of navigation, and the simulation platform can effectively reduce the R&D and testing costs of navigation systems and improve R&D efficiency.

This invention relates to the field of digital twin technology for water conservancy projects, and discloses a method and system for dynamic flood digital twin simulation of navigation and hydropower hubs that integrates hydrodynamic models. The method collects multi-source observation data to form a spatiotemporally coded raw dataset, constructs a set of hydrodynamic boundary parameters, builds a two-dimensional unsteady hydrodynamic calculation model based on the parameter set, and updates the model parameters online by assimilating the latest monitoring data. The hydrodynamic simulation state field is mapped onto a three-dimensional terrain mesh to generate a three-dimensional twin rendering scene. Based on this scene, inundation indicators and scheduling benefit indicators are calculated, a set of scheduling optimization schemes is generated, and execution control commands are issued. This realizes dynamic simulation of flood processes, multi-objective optimized scheduling, and closed-loop control of navigation and hydropower hubs, improving the accuracy and timeliness of flood control decisions.

This invention proposes a method for optimizing the spatial configuration of flexible photovoltaic (PV) support structures, comprising: obtaining the flexible support layout parameters; dynamically shrinking the layout area based on the centroid calculation and rotation alignment of CAD convex polygons to generate a safe layout boundary; determining the insertion point position of the end column and generating three-dimensional terrain profile data of the flexible support axis according to the safe layout boundary and the rotated terrain features; using an arc intersection tracking algorithm to iteratively calculate the spacing between the middle columns with the end column position as the initial point, forming a continuous middle column positioning sequence; and generating a short-span structural layout table containing the number of components, tilt angle, and three-dimensional coordinate information by combining short-span vector calculation and plane normal direction determination. This invention enables the optimal spatial configuration of flexible PV support structures within complex terrain-defined areas, effectively improving power generation efficiency, reducing the impact of shading, and enhancing the overall stability of the system.

This invention discloses a composite measurement method, device, system, medium, and program product. By integrating global multi-view visual positioning and local fringe projection measurement technology, it accurately corrects the motion error of an industrial robot using externally measured pose. First, it completes multi-dimensional accurate calibration of local measurement, global positioning module, and hand-eye coordination, constructing a high-precision unified global coordinate system covering the entire measurement space. Then, through hardware triggering, it achieves strict spatiotemporal synchronization of local 3D topography data and robot end-effector global pose data, and combines intelligent path planning to complete a full-coverage scan of large-size structures, calculating the high-precision six-DOF global pose of the robot end-effector detached from its own sensing system. Subsequently, it accurately converts the local point cloud to the global coordinate system and completes seamless stitching and fusion of noise reduction, coarse registration, and fine registration, realizing high-precision, high-efficiency, and automated 3D topography measurement of large-size structures, ensuring the global consistency and accuracy reliability of the measurement results.

The present application relates to a kind of based on high-precision position sensing surveying and mapping method, device, equipment and storage medium, comprising the following steps, utilize high-precision GNSS receiver to collect the position signal of surveying and mapping area target survey point, obtain survey point coordinate and associate time stamp, form with time tag coordinate;Calibration coordinate is obtained by threshold screening and correction processing, and adjacent survey point spacing data is accounted;Calibration coordinate is combined with survey point spacing data, and the basic geographic three-dimensional base map obtained is grid division and feature point matching, and regional grid chart is generated;Based on regional grid chart, calculate terrain undulation, obtain grid elevation difference;Finally, combined with grid elevation difference, basic geographic three-dimensional base map is implemented texture filling and boundary optimization, complete the fine expression of topographic feature, output high-precision surveying and mapping image, solve how to improve the anti-interference ability of survey point data, and realize the technical problem of the automation, fine reconstruction from discrete coordinate to high-fidelity three-dimensional topographic map.

This invention proposes a method and system for acquiring multi-component gas data based on unmanned aerial vehicles (UAVs), belonging to the field of gas data acquisition technology. The method includes: controlling a UAV equipped with multi-component gas sensors to fly according to the preset boundary coordinates of a monitoring area, and hovering and sampling at each spatial grid node to obtain raw gas concentration data. Simultaneously, a digital elevation model is generated using an onboard positioning module and lidar, and component separation and mass spectrometry analysis are performed using a miniaturized gas chromatography-mass spectrometry module to obtain gas component fingerprint data. Finally, the gas data and the digital elevation model are spatiotemporally correlated and fused to generate a multi-component gas distribution field with three-dimensional geographic information annotation. This invention achieves on-site multi-component gas identification and, by fusing gas data with a three-dimensional terrain model, significantly improves the spatial resolution and data dimensionality of gas pollution monitoring in large-scale complex terrain.

This application relates to the field of neural network technology, and in particular to a multi-objective intelligent 3D road alignment method and system based on deep reinforcement learning. The proposed scheme involves acquiring 3D terrain data and geographic information data of the candidate route area and constructing a 3D environment dataset. Combined with road design specification parameters, multi-channel input parameters are generated, including the terrain forward profile, longitudinal feasible envelope, and cut-fill pressure difference. Based on these input parameters, the decision-making agent iteratively generates multiple candidate road centerlines in the 3D alignment environment. Furthermore, by comprehensively evaluating candidate routes using multi-dimensional indicators such as engineering cost, ecological avoidance, and alignment smoothness, multi-objective ranking and scheme selection are achieved. This application can proactively perceive engineering constraints and cost trends during the alignment process, improving the feasibility and scheme diversity of 3D road alignment under complex terrain conditions.

This invention relates to the field of marine ranching technology, and provides an integrated control method and robot for repairing fishing nets. The method includes: based on an uncertain heatmap, using an adaptive focusing scanning algorithm to guide a 3D lidar to collect point cloud data of a target area, forming a 3D topography of the target area; acquiring the spectral signal of the fishing net in the target area to determine the net material type, optimizing the tactile probe parameters to control the tactile probe's movement, collecting the vibration response signal of the fishing net to obtain a fishing net health index; determining whether to issue a repair command through multi-source fusion decision-making; and upon receiving the repair command, determining the location of the damaged point based on the 3D topography and the geometric contour of the damaged area, obtaining the robot's planned path through an A search algorithm, and precisely moving to the actual working area to perform the repair operation through adaptive PID control.

The application discloses a kind of silt dam dam system space optimization intelligent simulation method based on high-resolution image, it is related to silt dam system planning technical field, including the geographic registration after the multiple high-resolution remote sensing images of target river basin, extract three-dimensional terrain information, generate surface deformation elevation difference grid through pixel level difference operation, extract the measured sediment discharge of each sub-basin, and combine with the rainfall data corresponding to different time, construct the sediment transport ratio model of each sub-basin, generate the actual sediment yield contribution intensity spatial distribution diagram of target river basin, it is used as input, in the spatial range of target river basin, with dam system overall service life maximization as target intelligent simulation optimization is carried out, at least including dam site coordinates and dam height dam system space layout parameter is solved, provide a kind of can analyze the dynamic process of river basin sediment yield and siltation, realize river basin sediment yield contribution intensity fine mapping, and can carry out system level optimization to dam system.The method.

This invention relates to the field of geographic information technology, specifically a UAV dynamic image and 3D terrain overlay projection system based on real-time streaming for emergency command. The system includes a data acquisition and encapsulation module, a streaming and analysis module, a viewpoint positioning module, a projection calculation module, a texture mapping module, and a spatial inversion module. It acquires real-time dynamic images, spatial location, and camera attitude data from the UAV, encapsulates them into a synthetic video stream, and streams it to a geographic information client for analysis. The system locates the UAV's observation origin, calculates the image projection boundary to generate a dynamic projection area, and maps the image to a 3D terrain dynamic image layer. Based on the pixel coordinates of the ranging start and end points in the dynamic image layer, the local elevation values ​​of the 3D terrain data, and the camera attitude data, it performs spatial inversion on the surface curve distance between the ranging start and end points to obtain real-time situation measurement data for the geographic information client. This invention can improve the efficiency of emergency situation awareness.

This invention relates to the field of marine geological 3D visualization technology, specifically disclosing a marine geological VR 3D visualization simulation system that integrates panoramic real-world footage. The system includes a visualization simulation platform, which is communicatively connected to the following modules: a coordinate mapping and alignment module, used to precisely align the spherical UV coordinates of the panoramic real-world footage with the terrain world coordinate system in Unity3D through inverse projection transformation using a unified virtual-real coordinate mapping algorithm, and to smooth the parallax jumps during head rotation using quaternion interpolation. This invention precisely aligns the spherical UV coordinates of the panoramic real-world image with the 3D terrain world coordinate system using a unified virtual-real coordinate mapping algorithm, and uses quaternion spherical linear interpolation to smoothly transition the parallax changes during head rotation, eliminating the visual disconnect between the panoramic background and the 3D terrain, and ensuring the continuity and stability of spatial perception when the user's perspective changes.

The present application relates to the technical field of three-dimensional data processing, and discloses a three-dimensional terrain modeling method based on surveying and mapping data, comprising the following steps: step one, obtaining multi-source heterogeneous surveying and mapping point cloud data of a region to be modeled, unifying the multi-source heterogeneous surveying and mapping point cloud data to a preset geographic coordinate system, and performing elevation normalization processing on underwater data by using synchronous tidal level data; step two, identifying homonymous feature elements of the processed multi-source heterogeneous surveying and mapping point cloud data in an overlapping area, calculating the vertical offset parameters between each load by using a least square adjustment algorithm, and performing elevation compensation on the multi-source heterogeneous surveying and mapping point cloud data by using the vertical offset parameters. The three-dimensional terrain modeling method adopts the overlapping area homonymous feature element matching and vertical offset parameter calculation technology, eliminates the systematic elevation difference of multi-source surveying and mapping data, achieves the unification of water and land benchmarks, realizes seamless smooth splicing of the terrain of the boundary area, and solves the problem of false steep cliffs and geometric misplacement at the water-land junction caused by traditional modeling.

The present application relates to the technical field of road engineering construction, and more particularly to a method and system for adaptive rolling path planning of an unmanned road roller for a special-shaped work surface, which obtains three-dimensional terrain data and boundary contour data of a target special-shaped work surface, constructs a work surface terrain boundary mapping model, divides the work surface into grids based on the model, generates a feasible region for rolling work and extracts special-shaped boundary feature points, generates a reference rolling path cluster using an adaptive boundary offset algorithm based on the boundary feature points, determines path overlap width and single-path rolling pass count in combination with rolling process parameters, obtains compaction degree detection data and road roller pose data in real time during construction, dynamically corrects the reference path cluster, generates an adaptive optimized rolling path, and controls the road roller to perform work, thereby improving the adaptability to complex boundaries and local morphological changes, reducing missed rolling and repeated rolling, improving coverage integrity, compaction uniformity, construction efficiency, and reducing energy consumption.

The scheme provides an adaptive sealing method and device based on three-dimensional reconstruction and fluid diffusion simulation, comprising: obtaining a three-dimensional terrain distribution map of a pathological sample on a slide, regarding a region containing sample tissue in the three-dimensional terrain distribution map as a core region, regarding the remaining region as a guide region, and regarding a pixel point with a height difference greater than a preset threshold from any adjacent pixel in the core region as a thickness mutation point; obtaining a glue dropping path based on the three-dimensional terrain distribution map, and running a piezoelectric glue dropping valve along the glue dropping path and dropping glue to obtain a glue dropping slide; and obtaining a sealed sample by tilting and pressing the glue dropping slide with a cover slide adsorbed by a sealing head. When the piezoelectric glue dropping valve runs to the top of the thickness mutation point, the valve opening is increased, so as to locally increase the glue dropping amount and the glue dropping pressure, overcome the fluid resistance at the thickness mutation point, fill the gap formed by the thickness mutation of the tissue, and reduce the formation of the air lock region from the root.

This invention discloses a method and system for 3D terrain detection in off-road scenarios based on UAV (Unmanned Aerial Vehicle) collaborative air-ground approach. The method includes: a vehicle-mounted terminal planning the target driving area and issuing terrain detection commands to the UAV; the UAV collecting obstacle information and multi-source terrain data within the area, fusing and processing these data to generate and transmit a 3D sparse terrain model; and after detection, deep fusion data generating and transmitting a high-precision 3D terrain model. The vehicle-mounted terminal integrates the two models to form hierarchical terrain data, performs visual segmentation on the high-precision model, extracts terrain feature parameters, determines risk levels, and identifies and visualizes terrain risks and passable areas. This method utilizes the UAV's aerial perspective to eliminate blind spots in vehicle-mounted perception, accurately captures 3D information of off-road terrain, improves the comprehensiveness and accuracy of detection, provides a reliable basis for driving decisions, and effectively avoids safety risks during off-road driving.

This invention discloses a method and system for generating 3D terrain registration profiles and interactive situational awareness data using airborne cloud radar, relating to the field of airborne cloud radar application technology. The method acquires real-time aircraft position and attitude, cloud radar per-detection-unit data, 3D terrain data, and external airspace data; maps multi-source data to a unified time reference and establishes a cache queue; constructs a four-level transformation model from the cloud radar coordinate system through the aircraft coordinate system, local navigation coordinate system to the geographic coordinate system or 3D terrain coordinate system; interpolates attitude parameters for each effective detection unit according to the sampling time, completing point-by-point or group attitude compensation and spatial registration; constructs 3D cloud bodies, terrain, aircraft, flight paths, and airspace objects and overlays them to form a 3D main view; generates cutting planes and section views, achieving bidirectional linkage positioning between the main view and section views; supports multi-view switching, target attribute viewing, and highlight display interaction. This invention solves the problems of cloud body drift and spatial interpretation difficulties, improving the efficiency of flight situational awareness.

The application discloses a simulation method and device for photolithography. The simulation method comprises the following steps: obtaining simulation parameters, wherein the simulation parameters comprise optical parameters, post-baking parameters and etching parameters; performing exposure treatment on photoresist arranged on a substrate based on the optical parameters to obtain photoacid distribution information in the photoresist; performing post-baking treatment on the photoresist after the exposure treatment based on the post-baking parameters, and obtaining initial-state inhibitor concentration initial distribution information based on the photoacid distribution information; in the case that the photoresist is a negative photoresist, determining equilibrium-state inhibitor concentration distribution information based on the initial-state inhibitor concentration distribution information; performing development treatment on the photoresist, generating a first 3D topography of the photoresist based on the equilibrium-state inhibitor concentration distribution information; and performing etching on the photoresist based on the first 3D topography and the etching parameters to obtain etched photoresist and a second 3D topography of the substrate. The simulation precision of photolithography can be greatly improved.

The present application relates to the technical field of visual analysis, in particular to a similarity visual analysis method for a standard fingerprint of momordica grosvenori raw materials, the present application performs smoothing processing and second derivative operation on a standard fingerprint, constructs a rigidity weight vector based on curvature energy, and introduces the rigidity weight vector into a dynamic time warping algorithm to realize a restricted elastic alignment between a to-be-tested fingerprint and a standard fingerprint. On this basis, a spectrum difference is mapped into centripetal load and normal load of a ring-shaped elastic grid through projection and residual decomposition, a single-batch topological surface is generated by solving grid deformation, and a three-dimensional terrain map is constructed by stacking and interpolating multiple batch results. Further, a Laplace field analysis is performed on the three-dimensional terrain map, abnormal extreme values are extracted, and pattern matching is performed with a process fault knowledge base to output corresponding quality abnormal batches and process diagnosis conclusions, so that intuitive expression of the similarity of the momordica grosvenori raw material fingerprint and intelligent analysis of process abnormalities are realized.

This invention belongs to the field of unmanned aerial vehicle (UAV) technology and discloses a UAV air combat confrontation method and system based on hierarchical reinforcement learning. The method includes: simulating the environment using a 3D terrain model and a 3D dynamic wind field model; correcting noise and enhancing features of multi-source sensor data using a dynamic battlefield environment and sensor attenuation model; quantizing multi-source perception datasets and multi-source state feature data into feature vectors; weighted fusion using a nonlinear transformation network; constructing multi-dimensional training target parameters by integrating the situational representation vector and mission objectives, assigning weights, and calculating a weighted total reward; an upper-layer reinforcement learning agent evaluating the optimal path command and issuing it to the lower-layer flight control terminal; generating actions for the propagation of sudden events; storing multi-source temporal interaction data in an experience replay buffer; updating the value network and policy network; and iteratively optimizing the target network to achieve autonomous decision-making and control strategies for the UAV. This invention improves the survivability of UAVs in complex battlefield environments through hierarchical reinforcement learning training.

The application relates to a kind of based on two-dimensional profile topography fast positioning synthesis three-dimensional numerical model method, it is related to geotechnical engineering numerical simulation technical field, including obtaining the two-dimensional profile of the region to be modeled, and pretreatment is carried out;From three-dimensional terrain, the plane position where each two-dimensional profile is located is determined, the azimuth angle and center point coordinate of two-dimensional profile are calculated;Extract three-dimensional terrain point cloud, then two-dimensional profile is processed one by one, to rotate and translate with rotation amount and best translation amount, synthesis three-dimensional stratum distribution model: for the internal stratum of three-dimensional stratum distribution model, increase stratum control point, improve the precision of three-dimensional stratum distribution model using distance reciprocal interpolation method, and using FLAC3D establishes three-dimensional numerical model;It can provide theoretical basis for slope excavation measure, disaster assessment determination, for complex working condition slope stability analysis and deformation mechanism.

This invention discloses an adaptive matching method between a BIM model and 3D terrain, belonging to the field of 3D scene construction and model matching technology. The method includes: constructing spatial indices for the terrain layer and the BIM model layer respectively; utilizing the cross-sectional coverage characteristics of the finest level of 3D terrain LOD, extracting the terrain polygon cross-section of the BIM model coverage area through a single intersection operation; quickly retrieving vertices of triangular grids at each level based on the spatial grid index; performing perpendicular intersection operations on the triangular grid vertices and the BIM model, simultaneously completing intersection point extraction and projection area ratio calculation; determining the correction object according to the area dominance rule: when the terrain projection area ratio is larger, reconstructing the terrain triangular grid; when the BIM model projection area ratio is larger, dispersing, extending, and aggregating the BIM model to restore it, thus achieving adaptive matching between the BIM model and the 3D terrain. This invention has high matching efficiency and strong versatility, and is applicable to fields such as digital twin cities, engineering design, and virtual simulation.