971 results about "Building model" patented technology

The invention relates to the technical field of building engineering, in particular to a building data processing method and system based on multiple building specifications, and the method comprises the steps: building model data standardization processing: extracting geometric attributes, material attributes and spatial topological relations of components through a BIM software interface, and generating model data in a standard format; constructing a multi-source specification rule tree, performing semantic analysis on national standard, local standard and industrial standard provisions, extracting triple constraint conditions, and fusing to generate a unified rule tree containing hierarchical relationships and conflict marks; on the basis of a spatial topology mapping relationship between the model and the rule tree, identifying a specification conflict and generating an optimization rule set according to a specification effectiveness level and a spatial attribute priority; and finally, real-time compliance verification is executed, and a three-dimensional compliance report including conflict positioning, article basis and correction suggestions is output. According to the method, multi-source specifications can be automatically adapted, model violation components are accurately recognized, a correction scheme is given, and the specification compliance and the verification efficiency in the design stage are improved.

The invention relates to the technical field of building model design, in particular to a building three-dimensional model lightweight design method and system based on artificial intelligence, and the method comprises the steps: extracting geometric-semantic features of a building model through a multi-scale curvature filtering and semantic segmentation network, constructing a fusion feature vector matrix, and obtaining a fusion feature vector matrix; by utilizing an integrated graph convolutional network and a self-adaptive neural simplification network of a double-branch attention mechanism, differential resampling is executed based on vertex importance weight, a simplified intermediate model is generated, a surface microstructure is recovered by means of a generative adversarial network, grid holes are corrected by combining Delou inner triangulation, and a surface microstructure is obtained. A non-uniform rational B-spline curved surface is adopted to reconstruct a key decoration component and output a lightweight model, so that the problems of insufficient geometric feature retention and semantic information splitting in the traditional technology are solved, intelligent, efficient and lightweight of a building three-dimensional model is realized, visual fidelity is ensured while data compression is performed, and the construction quality is improved. And the digital management requirement of the whole life cycle of the building is met.

The invention discloses an intelligent building energy-saving management method and system based on a digital twinning technology, and relates to the field of digital twinning technologies, and the method comprises the steps: building a three-dimensional building model based on a building information model and three-dimensional laser scanning point cloud data, and generating a twinning database through multi-source equipment data fusion; performing energy consumption simulation modeling according to the lamp dimming parameters, the air conditioner performance curve and the elevator operation log in the twin database to generate an energy consumption reference report; acquiring personnel density and environment parameters, and generating a building environment state matrix mapped with the twin database after space-time calibration; and establishing a hierarchical threshold value control strategy library based on the building energy consumption reference report and the building environment state matrix, and generating an optimization control strategy set through the equipment linkage relation matrix. According to the method, by embedding a Pareto optimal solution screening mechanism and equipment mutual exclusion rule verification, the daily average energy consumption is reduced on the premise that the comfort reaching rate of the optimal control parameter packet is ensured.

The invention relates to the technical field of building information modeling, in particular to a building drawing geometric feature extraction and visual modeling method and system, and the method comprises the steps: carrying out the self-adaptive noise reduction, contrast enhancement and line refinement processing of an original building drawing image, and carrying out the automatic layer separation based on colors and line types; linear geometric features and specific symbol geometric features in the drawing image are extracted, and a geometric feature set is constructed; component instantiation, attribute assignment and topological relation reasoning are carried out by using a predefined building component semantic rule base, and a building component semantic network is generated; and mapping the semantic network to a parameterized three-dimensional modeling engine, calling an IFC standard three-dimensional template, performing parameter driving and automatic assembly, generating a three-dimensional building model with semantic information and a spatial structure, and performing visual output. According to the method, efficient and standardized conversion from a two-dimensional building drawing to a three-dimensional building model can be realized, and the method has the remarkable advantages of processing complex drawings and high-precision modeling.

The invention discloses a rapid construction method and system for a three-dimensional space model of a multi-level building, and relates to the field of building model construction, and the method comprises the following operation steps: S1, constructing a dynamic demand-oriented detail level model; s2, automatic component modeling based on image segmentation; s3, performing multi-version difference judgment and model updating; and S4, cloud collaboration and load optimization. According to the method and the system for quickly constructing the three-dimensional space model of the multilevel building, the region is dynamically divided through the semantic weight, so that the rendering efficiency during model construction can be effectively improved, the memory can be effectively reduced during rendering, the visual fidelity can be optimized, key curvature characteristics can be forcibly reserved for a high semantic weight region, and the construction efficiency is improved. Based on this, deformation distortion caused by simplification can be avoided, a visible area in the model can be automatically identified, an invisible area can be degraded, only the contour line frame of the building is reserved, and the overall memory occupation can be greatly reduced.

The invention provides a data optimization processing method and system for edge calculation in architectural design. According to the method, geometric deviation and attribute change characteristics between building design models are obtained, and a version conflict identification graph for marking high-conflict areas is generated through topological relation comparison; deploying an incremental synchronous controller at an edge computing node of a physical layer, dynamically intercepting a high-conflict area association difference data fragment and compressing the high-conflict area association difference data fragment into an incremental data packet; analyzing a dependency topological relation between the models to predict a conflict propagation path; converting the path into a combined operation instruction conforming to a design rule through a collaborative modeling engine; and executing the instruction to integrate the difference, and outputting a conflict-free multi-building design integrated model after the models are fused. According to the method, second-level dynamic resolution and automatic fusion of building model conflicts are realized, the design iteration efficiency is improved, and the construction rework risk is eliminated.

The invention relates to the technical field of energy consumption simulation, in particular to a simulation method and system based on BIM building energy consumption, and the method comprises the following steps: importing structural data in a BIM building model, recording the actual sizes and material characteristic information of building walls, windows and floors, and generating a building structure parameter table through parameter extraction and data integration. According to the method, the BIM technology and the energy consumption simulation process are utilized, the accuracy of building energy consumption prediction and the practicability of operation are remarkably improved, the building structure parameter table is constructed, the thermal bridge effect is deeply analyzed, so that thermal performance data are more accurate, dynamic adjustment of actual climate change parameters is provided in thermal load simulation, the simulation adaptability is improved, and the simulation efficiency is improved. According to the method, the consistency of an energy consumption prediction result and an actual climate condition is ensured, the simulation precision and practicability are ensured through continuous matching and iterative optimization of actual data and a simulation result, powerful data support is provided for energy efficiency management and optimization, an energy-saving target is helped to be achieved, and the environmental performance of a building is optimized.

The invention relates to a building refined three-dimensional reconstruction method based on airborne LiDAR point cloud, and belongs to the technical field of three-dimensional modeling. According to the method, high-quality building point cloud data is separated from original airborne LiDAR point cloud data, features and bottom contour lines related to a building are extracted, a roof surface is fitted, and the features and the bottom contour lines are projected to the same horizontal reference surface, so that correlation correction of the features and the bottom contour lines is realized; and completing preliminary reconstruction of a building model by using the corrected building bottom contour line and roof surface, constructing constraint conditions by using priori knowledge, and completing expression of detail components on the model and correction of the reconstructed building roof surface. According to the method, the problems of irregularity, distortion, cavities, difficult facade detail structure expression and the like of the reconstruction model caused by the problems of sparse, missing, cavities and the like of the building facade point cloud data in the prior art are effectively solved, and the problems of irregular edges, distortion, cavities and the like of the constructed building model are solved while efficient, automatic and refined modeling is realized.

The invention relates to the technical field of building models, in particular to a building model processing method and system and a medium. The method comprises the following steps: acquiring initial image data of a high-rise structure through an aircraft, and synchronously recording motion state data; calculating a jitter characteristic parameter according to the initial image data and the motion state data; establishing a jitter compensation mechanism of the long-distance image based on the jitter characteristic parameters; processing the initial image data by using a jitter compensation mechanism to obtain stable image data; extracting structural feature point information in the stable image data; establishing a high-rise structure reference coordinate system according to the structural feature point information; and performing high-precision registration on pre-acquired multi-angle image data of the high-rise structure and the reference coordinate system of the high-rise structure to obtain registered image data. According to the invention, by analyzing the jitter characteristics of different frequency bands, a multi-level jitter compensation mechanism is established, and the stability problem during long-distance image acquisition is effectively solved.

The invention relates to the technical field of building information modeling, and discloses a parameterized BIM modeling method, which comprises the following steps: step 1, acquiring specific design parameters of a modeling object in a project design requirement, marking key geometric parameters of the object, including length, width, height, volume and material characteristics, and defining units, physical meanings and application ranges of the parameters in a marking process, a basis is provided for subsequent entity model construction; and 2, based on the geometric parameters marked in the step 1, a solid model is constructed through a BIM modeling tool, and the solid model is a visual model with the shape, the size and the position determined through the geometric parameters in a three-dimensional space. The three-dimensional BIM model is dynamically generated and modified by modifying geometric parameters, model construction is more flexible and efficient due to introduction of parameterization logic, automatic adjustment and rapid iteration of the model are achieved, and the reusability of BIM modeling and the design efficiency of the building model are remarkably improved.

The invention relates to the technical field of building information models, in particular to a BIM building model generation processing optimization method and system, and the method comprises the following steps: based on a to-be-modeled target building, adjusting the scanning precision level of a differentiated part according to the importance and structural complexity of the differentiated part of the building, changing the resolution parameter of a three-dimensional scanning device, and generating a BIM building model; and controlling the three-dimensional scanning equipment to scan the building to obtain basic three-dimensional scanning data. According to the invention, the resolution parameter of the three-dimensional scanning equipment is dynamically adjusted according to the structural complexity and importance of the building, the scanning process is effectively optimized, the three-dimensional scanning is more accurately focused on a key structure part, the quality and correlation of data acquisition are improved, and the accuracy of data acquisition is improved by contrastive analysis with a field picture and structural feature extraction. Structural errors can be found and corrected in time, accuracy and practicability of the model are ensured, detail levels of the model are automatically adjusted according to parameters set by a user, and use of computing resources is optimized.

The invention provides a quick physical examination method for a brick-concrete building structure based on multi-modal tight coupling SLAM, and the method comprises the steps: introducing a laser residual error, a visual residual error, a thermal image residual error and an IMU (Inertial Measurement Unit) pre-integration residual error into a factor graph, and constructing a real-time positioning and mapping frame which can still achieve high precision and stronger robustness in a weak illumination and texture missing scene. In the mapping process, the system synchronously operates crack width and temperature difference double-threshold identification and wall slope rate evaluation, and risk identification and marking of dangerous cracks and inclined walls are completed in real time. According to the method, a three-dimensional building model with a semantic standard is generated, an integrated closed-loop process integrating'multi-modal perception, high-precision mapping, crack and inclination risk judgment and instant output early warning 'is formed, and the high-timeliness and high-precision structural examination requirements of'risk judgment by scanning' on old brick-concrete buildings are met. The method is suitable for scenes such as city updating, dangerous building general survey and rural self-built house structure safety monitoring, and the efficiency and reliability of building rapid screening are remarkably improved.

A search engine for providing intelligent or conversational responses to user queries into a digital building portfolio are disclosed. In embodiments, a search engine receives a user query and query context. The query and query context are processed and used to search into a vector database and knowledge graph database that are generated from data in the digital building portfolio. The results of the search are used to retrieve relevant data from the digital building portfolio, which are then summarized and used to generate an appropriate response. Other embodiments may be described and / or claimed.

The invention discloses an automatic building energy consumption modeling method based on a large language model, and the method comprises the steps: obtaining a natural language demand description inputted by a user side, and carrying out the domain semantic analysis of the demand description based on a natural language model, and extracting a modeling parameter; the demand description comprises architectural space attributes; the modeling parameters are input into a building large language model, and a standardized modeling instruction set meeting the grammar specification of the target building energy consumption simulation engine is generated; wherein the building large language model is obtained by finely adjusting a pre-trained large language model through a professional question and answer corpus in the building field; an interface of the target building energy consumption simulation engine is called, a simulation instruction is generated, and the simulation instruction is used for indicating the target building energy consumption simulation engine to output a simulation result based on the standardized modeling instruction set; the simulation result comprises the building model file and a key index of the building model file. By adopting the method, the automation degree of building modeling can be improved, manual intervention is reduced, and the modeling threshold is lowered.

The invention relates to a building engineering progress intelligent monitoring method. According to the method, a building space is divided into area units for fine management, a progress deviation analysis result is generated in combination with a construction plan and field data collected in real time, a deviation value is dynamically mapped to a three-dimensional building model to realize visual monitoring, and meanwhile, resource allocation data is associated to perform spatial clustering and optimization adjustment, so that the construction efficiency is improved. The problem that in a traditional method, progress monitoring and resource allocation are disjointed in the spatial dimension is solved, accurate correlation analysis and closed-loop optimization of the progress and resource dynamics of the constructional engineering are achieved, and the real-time performance and decision-making scientificity of construction management are remarkably improved.

The present application relates to a BIM-based hanging basket design method, computer device and computer-readable storage medium, wherein the design method comprises following steps: a parameter acquisition step; a hanging basket modularization step: decomposing structures of hanging baskets into a plurality of design modules; a selection step; a calculation step: calculating parameters of the design modules using a structural mechanics calculation method and / or a finite element calculation method; preliminary BIM model building step: building models of the design modules and a preliminary BIM model of the hanging basket; an optimization iteration step: converting the preliminary BIM model of the hanging basket into a finite element model for calculation, and feeding calculation results back to the preliminary BIM model for structural adjustment, repeatedly performing iterative calculations to obtain optimized hanging basket parameter data; final BIM model acquisition step: the BIM model of the hanging basket adjusted according to the optimized hanging basket parameter data is a final BIM model of the hanging basket. The design method enables autonomous calculation and design of the hanging basket with good versatility.

The invention relates to the field of unmanned aerial vehicle surveying and mapping and building three-dimensional modeling, and discloses a high-rise building three-dimensional modeling surveying and mapping method based on unmanned aerial vehicle laser scanning, and the method comprises the following steps: deploying a laser radar, a millimeter wave radar, a polarized light camera and an intelligent blind area supplement unmanned aerial vehicle for cooperative scanning, and generating an optimal path through topological manifold learning; multi-source point cloud high-precision registration is achieved through geometric algebra and Lie group optimization, multi-sensor heterogeneous data are fused in combination with tensor decomposition, blind area dynamic adjustment paths are detected in real time, and finally a complete three-dimensional building model is generated. According to the method, the modeling precision and data integrity of a complex building structure (such as a glass curtain wall) can be remarkably improved, the problems of scanning blind areas and equipment single-point failure are effectively avoided, and an efficient and robust solution is provided for high-rise building three-dimensional modeling.

The invention discloses an intelligent fire-fighting AI collaborative early warning system and method fusing GIS and multi-source data, and relates to the technical field of fire-fighting safety, and the system comprises a GIS space modeling module which is used for constructing a digital twinborn model through integrating a building BIM model, fire-fighting facility distribution, a population density thermodynamic diagram, sensing equipment layout and real-time environment data; the multi-source data fusion module is used for integrating sensing equipment data, real-time environment data, meteorological information, manually reported hidden dangers and a historical fire case library, and outputting the data after standardization processing; the AI collaborative early warning engine module is used for accessing standardized data, realizing building fire dynamic risk assessment and outputting graded warning information; the 3D simulation drilling platform is used for calling the digital twinborn model, receiving graded alarm information and supporting fire spreading simulation, emergency drilling and plan optimization; and the block chain evidence storage module is used for storing alarm information and drill records. According to the invention, risk assessment and accurate prediction of the fire hazard can be realized.

The invention discloses a humanoid robot intelligent decoration construction system and method based on multi-modal sensing, and the system obtains the geometric data of a construction surface in real time through multi-modal sensing, obtains the posture data of a robot through an IMU inertial measurement unit, facilitates the data calibration, guarantees the modeling precision of a building model, and improves the construction efficiency. Real-time feedback of construction progress and construction defects is carried out; the intelligent decision-making module is combined to dynamically adjust the movement and construction operation track of the robot; by means of an end effector of the flexible mechanical arm, high-precision multi-mode building construction operation is achieved; and the collaborative operation module can realize multi-robot construction operation task scheduling and progress management, so that the building comprehensive construction efficiency is improved. Compared with a traditional decoration construction mode, the construction efficiency, the construction precision and the robot operation and moving stability are remarkably improved, autonomous operation of a complex curved surface is supported, and the construction consistency and the continuity of multi-mode construction operation are improved.

The invention belongs to the technical field of navigation, and relates to an unmanned aerial vehicle multi-target image acquisition path planning method, equipment and a storage medium. The method comprises the following steps: acquiring a city live-action three-dimensional model; rasterizing the building model to create a three-dimensional grid map; acquiring distribution information of obstacles through the live-action three-dimensional model, judging whether the corresponding grid units are occupied by the obstacles or not, and generating an obstacle map according to a judgment result; dividing and storing space nodes in the grid map based on the obstacle map; performing initial path search by calculating a cost function of an initial node; and taking the obtained initial path as the basis of initial pheromone distribution, and obtaining an optimized path by adopting an ant colony optimization algorithm. According to the method, the influence of building shielding on image quality is avoided, time and energy waste of the unmanned aerial vehicle on an unnecessary path is reduced, the target image is obtained in the shortest time and the optimal path, and a flight task is completed.

The invention discloses a Chinese style garden programmed generation method and system, and the method comprises the steps: firstly, carrying out the land and water terrain division according to the land and water distribution data drawn by a user, generating a terrain mask graph, and providing a basis for the subsequent layout; secondly, in a garden layout generation stage, the system screens an area suitable for building placement from the terrain mask graph, optimizes the building layout by using a WFC algorithm in combination with a 3D texture mapping technology, generates a preliminary layout white-box model conforming to garden rules, and optimizes building orientation and path connectivity; and finally, in a single building generation stage, the system generates a building model comprising a framework and a small component structure according to building parameters input by a user, and decoration details are added to perfect the appearance of the building. According to the method, the basic rules and diversified expression requirements of the Chinese style building are met, the learning cost of the user can be reduced through parameterized adjustment and interaction functions, the creation efficiency is improved, and the digital generation effect and the propagation effect of the Chinese style garden are remarkably improved.

In order to solve the problems of high energy consumption and unbalanced comfort of a traditional static control strategy of the air conditioning system during environment change, a building three-dimensional model is constructed, and sensor data and energy consumption simulation software are fused to construct a joint simulation environment. The improved extreme learning machine neural network is used for predicting the air conditioner energy consumption and the personnel thermal comfort degree, the network structure and parameters are optimized through the rotary particle swarm optimization, and the prediction precision and generalization ability are improved. And then, in combination with a Newton-Raphson multi-objective optimization algorithm, solving an air conditioner temperature set value optimal dynamic sequence in a rolling manner, and balancing energy consumption and comfort through a Pareto frontier solution set. Through dynamic simulation and data driving optimization, precise regulation and control of the air conditioner are achieved, and the thermal comfort degree is improved.

The embodiment of the invention discloses a cold and hot channel simulation analysis method and system based on BIM and CFD, and the method comprises the steps: obtaining a building structure data set of a target building area, generating a BIM building model based on the building structure data set, and the BIM building model comprises the equipment distribution information and spatial topological relation of the target building area; performing channel division processing on the BIM building model to generate an initial layout scheme of a cold and hot channel, and performing fluid dynamic analysis based on the initial layout scheme to simulate an air flow state to obtain fluid distribution data of the cold and hot channel; performing coupling analysis on the BIM building model and the fluid distribution data to generate an air leakage state prediction result and a temperature distribution prediction result of the cold and hot channel; and generating a layout optimization strategy based on the air leakage state prediction result and the temperature distribution prediction result, and adjusting channel layout information in the initial layout scheme according to the layout optimization strategy to obtain a target layout scheme.

A computer-aided system and associated method for automated building design includes receiving input parameters and generating a three-dimensional parametric computer model of a building frame and populating the three-dimensional computer building model with generic and manufacturer-specific products by accessing internal and external data sources. The populated computer model undergoes real-time simulation to analyze regulatory compliance, verify engineering requirements including load calculations, and evaluate cost considerations. Based on simulation results, the method generates output documents including requests for proposals (RFP documents) for contractors, requests for quotations (RFQs) for vendors, and regulatory compliance documentation. These documents are transmitted to respective stakeholders through a secure data exchange protocol. The method further includes receiving responses to the generated RFP documents / RFQs.

The present disclosure presents systems and methods for integrating and executing a building code check tool. One such method comprises obtaining a construction model of a construction project, wherein the construction model includes construction project parameters; and obtaining an input specifying a regulatory building code section. The method further comprises performing a compliance code check against the regulatory building code section by capturing the construction model parameters from the construction model; prompting a user to provide additional construction model parameters; and evaluating the construction model against the regulatory building code section using the captured construction model parameters and the additional construction model parameters; and outputting a list of model elements, wherein a result of the compliance code check for a model element is indicated next to the model element, wherein selection of the model element causes a location of the model element to be displayed within the construction model.

The invention relates to the field of BIM modeling, in particular to a historical building BIM parametric modeling method. The method comprises the following steps that a historical building component classification database is constructed, the historical building component classification database divides historical building components into seven categories, each category is associated with a parameterization template, the parameterization template comprises geometric parameters and culture attribute fields, and the culture attribute fields are associated with a culture database. Historical building basic data are obtained, contour lines and feature points in the historical building basic data are extracted, and then the parameterized template is matched, so that a parameterized instance is obtained; and assembling the parameterized instances into a historical building BIM model, loading the BIM model and the multi-modal culture data in the culture database in a visual platform, and generating an interactive three-dimensional scene. The modeling of the historical building in a parameterized manner is realized, the engineering difficulty is reduced, and the finally generated three-dimensional scene is more real and immersive.

The present invention relates to the technical field of building foundation reinforcement deviation correction, and provides a building reinforcement lifting method based on numerical simulation, comprising: establishing an initial building model representing a building experiencing subsidence, and acquiring an initial subsidence displacement of the building; on the basis of the initial building model, adjusting shallow foundation parameters under the building foundation, simulating reinforcement of the shallow foundation, and forming a reinforced shallow foundation model; on the basis of the reinforced shallow foundation model, adjusting deep foundation parameters under the building foundation, simulating reinforcement of the deep foundation, and forming a reinforced deep foundation model; and, on the basis of the reinforced deep foundation model, dividing an intermediate lifting layer located between the deep foundation and the shallow foundation into a plurality of lifting areas and, on the basis of the subsidence displacement of each area, performing corresponding simulated lifting to implement simulated lifting of the building. The present method uses a numerical simulation approach to perform simulated optimisation on actual grouting deviation correction engineering cases, achieving both engineering economy and safety.

The invention discloses an active anti-floating drainage model test device and test method considering saturation change, and belongs to the technical field of active anti-floating of buildings. The test device comprises a boundary model box, a building model box, a plurality of pore pressure sensors, a plurality of dielectric constant sensors, a pressure limiting drainage pipe for simulating active anti-floating equipment in an actual building, a water head control device and a rainfall simulation device, and can simulate a seepage field of an underground space under the condition of active anti-floating measures during rainfall. The drainage condition of the underground space under the condition is reproduced; the pore pressure sensor and the dielectric constant sensor monitor the saturation change of the soil body in real time, the vacancy of the existing test device in the saturation change factor of the soil body is filled up, the drainage condition of the active anti-floating measure and the seepage law of the soil body in the unsaturated-saturated transition process of the soil body under different rainfall and different stratum conditions can be demonstrated, and the test device has a wide application prospect. Scientific basis and data support are provided for optimization application of active anti-floating measures under different saturation working conditions.

The invention discloses an auxiliary decision-making method and system for regional coal market purchase, and belongs to the technical field of coal market purchase decision-making, and the method comprises the steps: building model input parameters through collecting the data of a fire coal demand plan of a power plant, the maximum supply of a supplier, a coal quality index, a purchase price and a transportation cost; constructing a mixed integer linear programming model taking the minimization of the total purchase cost as a target function, and setting a demand satisfaction constraint, a supply capability constraint and a coal quality standard reaching constraint; solving the mixed integer linear programming model by adopting a two-stage approximation algorithm; and converting the obtained approximate optimal solution into a visual purchasing scheme chart and report, and supporting a user to dynamically adjust the purchasing scheme through an interactive interface to generate a final purchasing decision. According to the invention, on the basis of comprehensively considering the coal quality, the purchase cost, the transportation mode and the supplier capability, the coal purchase plan is optimized, the cost minimization is realized, and the overall quality of coal purchase is improved.

The invention relates to the technical field of building design, in particular to a BIM building model construction method and system.The BIM building model construction method comprises the steps that firstly, based on the plane continuity characteristic of a wall body structure in a building construction environment, rough segmentation is conducted on point cloud through an RANSAC multi-plane fitting algorithm, and a wall area and outer points of a complex structure are preliminarily separated; further, for complex structure areas such as curved surfaces and arc connection areas, model contribution factors are dynamically generated by calculating relative distances and geometric coherence between outer points and a fitting plane, and higher weights are given to point clouds in a high-curvature area; according to the method, the registration process is optimized in combination with the weighted ICP algorithm, and the key structure area is aligned preferentially, so that the damage to the integrity and continuity of a complex structure is reduced, the registered building point cloud data after registration is more accurate, and the accuracy of the BIM model constructed according to the registered building point cloud data is improved.