125 results about "Three dimensional architecture" patented technology

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.

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 emergency escape path planning system and method based on BIM and Internet of Things dynamic identification, and the method comprises the steps: constructing a three-dimensional building information model, forming a digraph structure for the constructed three-dimensional building information model, and extracting the geometric information of each node; constructing a space mapping table of corresponding space units in the three-dimensional building information model and networking sensors deployed in the building; then multi-dimensional information including environmental parameters, personnel positioning and structural states in the building is collected in real time, so that a real-time dynamic data source in the building is formed; mapping the collected dynamic real-time data to a corresponding space unit in the constructed three-dimensional building information model, and carrying out dynamic identification on a dangerous area and an obstacle; and then on the basis of the real-time space state diagram, an optimal escape path avoiding a high-risk area is automatically generated, and dynamic re-planning can be carried out. According to the scheme, the space expression ability of the BIM and the real-time sensing ability of the Internet of Things are deeply fused, dangerous factors and traffic obstacles in the building can be dynamically recognized, the real-time escape path is generated in combination with the path algorithm, and the problems existing in the prior art can be effectively solved.

The invention discloses a building three-dimensional reconstruction method and system for distributed photovoltaic potential assessment, and a medium, and the method comprises the steps: carrying out the data fusion according to the OpenStreetMap block vector data and three-dimensional building model data of a region, obtaining a three-dimensional model of a single building, carrying out the merging and classification algorithm of multi-layer patches, and obtaining a three-dimensional model of a single building; automatically identifying a surface patch to which the building roof belongs, and dividing the building into a roof layer and a main body layer; a digital elevation model of a roof layer is generated, and roof structure reconstruction is carried out according to different roof types; and carrying out adaptive elevation stretching based on the OSM vector data contour to obtain a main body layer reconstruction result, and finally outputting reconstruction results of all buildings in the area. Large-scale urban building rapid modeling based on the method is achieved, and details of related roof structures are effectively reserved.

The invention discloses a collision detection method and a computer readable storage medium. The collision detection method comprises the following steps: determining all static components belonging to a preset static type and all dynamic components belonging to a preset dynamic type in a three-dimensional building model; static SDF data are constructed for all static components in the three-dimensional building model; wherein the static SDF data comprises a plurality of static SDF values, and the static SDF values are SDF values from a space point in the three-dimensional building model to the surface of the nearest static component; constructing dynamic SDF data for all dynamic components in the three-dimensional building model; wherein the dynamic SDF data comprises a plurality of dynamic SDF values, the dynamic SDF values are SDF values from a space point in a dynamic influence area to the surface of a dynamic component used for generating the dynamic influence area, and the dynamic influence area is obtained after the boundary of a minimum three-dimensional bounding box of the dynamic component is expanded outwards by a first preset distance; and detecting whether a collision point exists in the three-dimensional building model based on the static SDF data and the dynamic SDF data.

The invention relates to the technical field of image processing, and discloses a house quality detection method and system based on a live-action three-dimensional model. The method comprises the following steps: converting an OSGB format live-action three-dimensional building model into a body coordinate system and carrying out quality evaluation, carrying out semantic segmentation on a standardized model to obtain a component geographic entity set, establishing an independent local coordinate system of each component to form a single three-dimensional model set, generating a multi-view projection feature image set based on a normal vector distribution planning view angle, and carrying out multi-view projection on the single three-dimensional model set. And detecting defects by adopting a 3D-YOLO-BuildingDefect algorithm, and carrying out inverse transformation to obtain three-dimensional space defect distribution and a quality grade evaluation result. The technical problems that a traditional two-dimensional detection method is insufficient in spatial positioning precision, incomplete in detection coverage rate and insufficient in geometric information utilization are solved, and the spatial positioning accuracy of house quality detection and the comprehensiveness of defect recognition are improved.

The invention belongs to the technical field of environmental risk assessment, and particularly discloses a BIM-based fabricated steel structure assembly scheme comparison and selection method and system, and the method comprises the steps: building a three-dimensional building model based on BIM software, and extracting component information and GIS data; establishing national and local standard libraries, matching applicable standards through building positioning information, and generating parameterized assembly rules; generating a plurality of assembly type combination schemes according to rules and component logic, and interactively binding with the BIM model; calculating an assembly rate and a standard score of each scheme, and screening candidate schemes meeting structural safety and a cost threshold value; and constructing an incremental cost library, completing cost difference analysis of the candidate schemes, and outputting an optimal assembly type steel structure combination scheme. And data driving and automatic comparison and selection in the whole process are supported, the method can be applied to prefabricated building scheme design and optimization links, and the design efficiency and the scheme economy are improved.

The invention is suitable for the technical field of building model data processing, and provides an intelligent building texture repairing and beautifying method fusing a deep learning model, and the method comprises the steps: firstly, carrying out the recombination of the texture of a three-dimensional building model, and generating a to-be-processed wall surface and roof texture picture; a to-be-repaired area, needing to be repaired, of the building texture is extracted by combining low-rank matrix decomposition and an SAM image segmentation algorithm, and then whether an LAMA image repair model or a PatchMatch image repair algorithm is used for texture processing is determined according to the proportion of the to-be-repaired area in a whole texture image so as to achieve the maximum repair effect. And finally, carrying out texture distortion repair and material beautification by using an image diffusion model, a ControlNet control chart and cue words, and outputting beautified wall surface and roof textures. The problems of texture shielding, garland, noise, window distortion and the like can be solved at the same time, automatic detection and automatic texture repairing and beautifying of the texture shielding garland area are achieved, and the time consumption of texture editing processing in the building monotonized modeling process is remarkably shortened.

The invention provides a construction template intelligent processing method which comprises the following steps: analyzing a to-be-constructed building, carrying out software modeling to obtain a corresponding three-dimensional building model, splitting building parts of the three-dimensional building model to obtain building templates corresponding to the building parts of the to-be-constructed building, and according to the size requirement of the to-be-constructed building, carrying out intelligent processing on the to-be-constructed building according to the building templates corresponding to the building parts of the to-be-constructed building. Performing typesetting layout on the obtained building template to generate a typesetting model, and cutting a pre-configured building board based on the typesetting model to obtain a corresponding building template board; and the obtained building template plates are subjected to subsequent classified storage. Compared with the prior art, the method and the equipment have the following beneficial effects that efficient and accurate machining treatment of the construction formwork is integrally achieved through automatic mechanical equipment, the problems existing in a traditional machining mode are solved, and the method and the equipment have the advantages of being high in automation degree, high in machining precision, wide in application range, capable of saving cost and the like; wide application prospects and popularization values are realized in the field of building construction.

The invention relates to the technical field of building three-dimensional modeling, and provides an ALS point cloud facade geometry-based LLO3-level-tending building three-dimensional model automatic reconstruction method, which comprises the steps of 1, building point cloud segmentation and bottom contour construction: segmenting a roof and facade area from an ALS point cloud, and constructing a bottom contour; automatically extracting the bottom contour of the actually grounded building through the vertical projection of the facade point cloud; step 2, door and window contour extraction based on facade geometry: projecting the facade point cloud into a two-dimensional image, identifying a door and window opening by using an Alpha Shape construction and geometry-semantic detection method, and extracting a door and window contour; and step 3, building a three-dimensional building model with enhanced facade details: inputting the bottom contour and the door and window contour into a modeling frame, and automatically embedding door and window components through polygonal surface patch combination and Boolean operation to generate a building model with a complete structure and semantic details. According to the method, the three-dimensional model of the building tending to the LOD3 level can be better and automatically reconstructed based on the ALS point cloud.

The invention discloses a seed point-based three-dimensional building regular contour automatic extraction method and device, and belongs to the technical field of surveying and mapping. For a building with a right angle between walls, triangulation network data is extracted through a live-action three-dimensional model, a seed point coordinate is taken from a roof point of the building, a connected domain marking algorithm is used for obtaining the range of the roof, and the range of the roof is calculated by setting an elevation threshold value and a normal vector threshold value. According to the method, most of non-wall facade data of the ground and the roof are effectively removed, so that building outer wall triangulation network data are obtained, a projection histogram statistical method is used for processing, peak positions are selected as wall boundaries, and finally the regular contour of the building is drawn. According to the method, the regular contour of the building is accurately described through the projection histogram technology, the steps are simple, and the automation degree and the extraction precision are high.

The invention relates to a three-dimensional model display method and device of a large building and computer equipment. The method comprises the following steps: acquiring laser scanning point cloud data and building structure drawing data of a large building; performing preprocessing and format conversion processing on the laser scanning point cloud data to generate point cloud model data which can be used for three-dimensional modeling; constructing a building internal structure model of the large building based on the building structure drawing data; and fusing the building internal structure model and the point cloud model data to obtain a three-dimensional building model of the large building, and displaying the three-dimensional building model. By adopting the method, the display integrity of the large building model can be improved.

The invention discloses an air-ground combined post-disaster building three-dimensional structure damage fine detection method, and belongs to the technical field of post-disaster emergency building damage assessment, and the method comprises the steps: collecting an air-ground image of a post-disaster building, and carrying out the preprocessing; registration and fusion are carried out by combining fast point feature histogram (FPFH) features and point clouds of iterative closest points (ICP); carrying out data enhancement by using the CT-3DGAN; and carrying out fine segmentation on the three-dimensional damage of the building based on CD-PointNet + +. On the basis of ground and aviation data, an improved iterative closest point ICP algorithm is provided to ensure high-precision registration, especially in a scene with large point cloud noise and low overlapping rate; according to the CT-3DGAN model, three-dimensional convolution and three-dimensional Transform are integrated in a generative adversarial network GAN framework, a three-dimensional building damage data set is expanded, representativeness is enhanced, and training of a deep learning model is promoted; a CD-PointNet + + model effectively identifies complex three-dimensional damage features, and accurate segmentation of building facade and roof damage after disasters is achieved.

The invention discloses a regional prevention and control layout planning method and system for a three-dimensional space, and belongs to the technical field of security and protection facility layout. In order to solve the problem that security and protection facilities are difficult to efficiently deploy in a complex three-dimensional environment, the method mainly adopts H3 grid division and kernel density estimation to generate a regional thermodynamic diagram, combines a three-dimensional building model and sight projection to carry out visibility analysis, constructs a dual-objective optimization function, and realizes optimal deployment scheme search through a multi-objective evolutionary algorithm. According to the invention, high-heat coverage, shielding avoidance and equipment cost control of a key area can be realized, and scientificity and efficiency of monitoring deployment in a three-dimensional environment are improved.

The invention relates to the technical field of urban building energy consumption calculation, in particular to an urban building energy consumption calculation method and device based on local weather data, and the method comprises the steps: obtaining local built environment information data of a local climate region, and calculating local weather data through the local built environment information data; the two-dimensional building boundary vector graph in the local climate area is converted into a three-dimensional building model, and an urban building energy consumption model with building prototype information is constructed based on building functions and years; and distributing the local weather data to a subdivided local climate grid corresponding to the urban building energy consumption model to calculate the urban building energy consumption of the building group. Therefore, the problem that the calculation efficiency and precision of the urban building energy consumption cannot be effectively guaranteed due to the fact that the resolution ratio of a local weather grid cannot be freely defined, the local built environment cannot be subdivided, and the difference of different local climate heat island effects cannot be represented in the prior art is solved.

The invention discloses a BIM-based building design system, and the system comprises a data collection module which is used for obtaining the historical information data of a building project, and uploading the building design idea and design element requirement information at the same time; the data preprocessing module is used for screening information data meeting requirements and standards, extracting related design elements and element values, and classifying and storing the related design elements and element values; the BIM model construction module is used for constructing a full-life-cycle three-dimensional building model in combination with the obtained design elements and element value information; and the scheme generation module is used for generating a corresponding building design scheme according to the constructed optimal three-dimensional building model. The building design scheme is generated by using the BIM model, the design quality can be improved, the cooperation efficiency can be improved, the operation cost can be reduced, and the environmental influence can be reduced.

The invention discloses a construction and transfer real object digital transfer method and system based on graph model data and identification codes, and relates to the technical field of engineering management, and the method comprises the steps: obtaining initial graph model data, generating an initial real object transfer list based on a project decomposition structure, generating a real object checking task, and generating real object identification codes bound with a positioning chip in batches, and receiving task processing data, updating the obtained approved real object transfer list, the approved graphic model data and the real object association information, and generating a space identification code bound with the space region. Through identity binding of the identification code, association of the visual two-dimensional base map and the three-dimensional building information model and dynamic updating of the transfer list of the mobile terminal, the technical problems of non-standard physical data, low cross-department efficiency, inconsistency of building drawings, models and on-site physical objects and the like caused by a traditional inventory mode are solved; according to the invention, digital transfer of physical assets from construction to operation is realized, and the technical effects of checking efficiency, data quality and transfer credibility are improved.

An example method performed by a processing system includes obtaining a light detecting and ranging point cloud of a building, where the point cloud includes a plurality of points, and where each point is associated with a set of (x,y,z) coordinates. A first point of the plurality of points is assigned to a subset of the plurality of points that is associated with the building, where the subset includes points whose (x,y) coordinates fall within a footprint of the building. The first point is grouped into a first cluster according to at least one of: a (z) coordinate of the first point and a gradient to which the first point belongs. A first prism formed by the first cluster is constructed. A model of the building is stored as a plurality of connected prisms, where the plurality of connected prisms includes the first prism.

The invention discloses a method, device and equipment for generating a building model expansion view and a storage medium, and the method comprises the steps: responding to a drawing instruction, and drawing a sectioning path in a non-linear state on a preset view surface of a three-dimensional building model; the three-dimensional building model is sectioned along the sectioning path according to a preset sectioning direction, and a three-dimensional sectioning plane, corresponding to the sectioning path, of the three-dimensional building model is obtained; straightening the sectioning path to obtain a reference linear direction, and expanding the three-dimensional sectioning plane along the reference linear direction to obtain a two-dimensional expanded view of the three-dimensional sectioning plane; according to the method, splicing of multiple views is not needed, and the plane expansion view corresponding to the sectioning path drawn based on the three-dimensional building model is efficiently and accurately generated.

The application relates to a kind of city building agent reconstruction methods based on aerial image.The method comprises: obtaining the multi-view image corresponding to target building;Multi-view image includes near vertical view image and inclined view image;According to near vertical view image, the bottom contour of target building is determined;Determine the first depth difference between each pixel point in inclined view image;According to the camera pose parameter of multi-view image and the current predicted height of target building, rendering is carried out, and the rendering depth map of target building under the current predicted height is obtained;With the distance between the second depth difference of each pixel point in the rendering depth map and the first depth difference as the optimization target, the current predicted height is optimized, and according to the bottom contour and target measurement height, the three-dimensional building model corresponding to target building is constructed.Using the method can improve the efficiency and accuracy of city building agent reconstruction.

The embodiment of the invention discloses a method and device for determining material consumption and waste output of a foundation pit supporting beam, and the method comprises the steps: opening or creating a three-dimensional building information model comprising a foundation pit model and a supporting member model in target building model software; obtaining three-dimensional model information, supporting beam related parameters, foundation pit elements and supporting component elements from the three-dimensional building information model, and determining a generation range of a foundation pit supporting beam; determining modeling positioning information of the supporting beams based on the generation range of the foundation pit supporting beams and the setting spacing of the supporting beams; generating a supporting beam model within the generation range of the foundation pit supporting beam based on the modeling positioning information of the supporting beam, the supporting beam size parameters and the supporting beam reinforcement information; and determining the concrete consumption, the steel bar quality and the waste generation amount based on the support beam model and the reinforcement information. According to the embodiment of the invention, the concrete consumption, the steel bar quality and the waste generation amount of the foundation pit supporting beam can be accurately determined.

The application discloses a three-dimensional building sky surface extraction method and device, a terminal and a medium. The method comprises the following steps: extracting a single building body according to a building base surface through a dense three-dimensional building grid, removing three types of noise, refining an original building body surface set, detecting a sky surface set of each building body surface set by using a layered vertical probe detection method, judging an abnormal condition by using Mesh directional compression auxiliary comparison sky surface data, correcting the abnormal condition, and finally outputting the sky surface data set. Therefore, the embodiment of the application can produce sky surface data in a building dense environment in batches, support village-in-city management data construction in a real three-dimensional construction background, and achieve high balance in automation degree, data production accuracy and data processing volume. Through the collection of the sky surface data, effective management of the village-in-city buildings is realized, illegal construction is prevented, and the urban landscape is improved.

The invention provides an allergy risk prediction method and device based on indoor physical environment simulation and electronic equipment, and relates to the technical field of medical health data analysis, and the method comprises the steps: constructing a parameterized three-dimensional building model based on spatial information; based on the three-dimensional building model and the external meteorological parameters, coupled physical field simulation is carried out on sunlight, natural lighting and natural ventilation conditions in the target building space, and quantitative environment field distribution data is obtained; matching and fusing the environment field distribution data with a preset risk mapping rule based on allergen breeding physical conditions, identifying and dividing different levels of environment risk areas in the target building space, and generating a visual risk distribution map with space coordinates; and generating a personalized report containing a targeted environment intervention strategy bound with the spatial position based on the specific risk area position and the grade thereof in the risk distribution map. According to the method, quantitative environment data support is provided, and health suggestions are upgraded from experience judgment to data decision.

The invention discloses a three-dimensional building view generation method and a three-dimensional building view generation device. The generation method comprises the following steps: determining an initial two-dimensional view of a building of a to-be-generated three-dimensional building view; determining a three-dimensional building model of the building based on the determined initial two-dimensional view; determining a first three-dimensional view of at least one first target view angle based on the determined three-dimensional building model; and for the first three-dimensional view of each first target view angle, determining a final effect picture based on the exclusive style constraint information and the geometric constraint information. Therefore, the design efficiency of the building scheme is improved, and the homogenization tendency of the design scheme is relieved.

The invention relates to the technical field of drawing recognition, in particular to an architectural drawing element intelligent recognition and labeling method based on graphic feature extraction, comprising: acquiring an architectural drawing file to be processed, the architectural drawing file to be processed comprising a two-dimensional CAD drawing and a three-dimensional building information model drawing; format analysis is conducted on the to-be-processed building drawing file, graph geometric data and layer description information are extracted, the graph geometric data comprise point coordinates, line coordinates and plane coordinates forming a building graph, and the layer description information comprises name information and layer priority information of building drawing layers; and building a building drawing feature database according to the graphic geometric data and the layer description information. According to the method, through deep fusion analysis of the graphic geometric data and the layer description information, and through the structured drawing feature database and the feature fusion module, various elements in the architectural drawing can be accurately identified and labeled, and the accuracy of drawing labeling can be effectively improved through the accurate identification.

The invention belongs to the technical field of building design, and particularly discloses a building facility AI modeling and dynamic simulation method and system based on an unmanned aerial vehicle aerial image, and the method comprises the following steps: collecting an aerial image of which the coverage range is not smaller than that of a to-be-collected land parcel, carrying out the preprocessing, building a three-dimensional space architecture reflecting a perspective relation, and carrying out the building facility AI modeling and dynamic simulation; model body blocks of the existing building and a model body block group of the demolished building in the aerial image are constructed, planes similar to materials of the surrounding environment are placed at the bottoms of all the demolished buildings, the range of the laid planes covers the bottom surfaces of the demolished building body blocks or exceeds the bottom surfaces of the demolished building body blocks, and the site is leveled; a new building is generated in the site, and the position of a reconstructed building is adjusted; and selecting the direction of a section cutting plane in the three-dimensional space architecture, adding a scene, and generating dynamic simulation demonstration. By adopting the technical scheme, three-dimensional building modeling is carried out on the scene picture, meanwhile, dynamic simulation of planning processes such as reservation, dismantling, transformation and new building is realized, and rapid modeling of facilities is realized.

The invention belongs to the technical field of digital urban and rural and built-up environment simulation, and provides a method for constructing and analyzing a regional urban and rural built-up environment by fusing multi-source data, and the method comprises the steps: obtaining a plane grid base map based on a selected region, and vectorizing the plane grid base map to obtain a two-dimensional building vector diagram; calculating and obtaining a building height base map based on DEM and DSM data, and establishing a three-dimensional building model by using the two-dimensional building vector diagram and the building height base map; a three-dimensional terrain model is obtained based on DEM data, and the three-dimensional building model and the three-dimensional terrain model are combined to form a built environment digital twinborn model of the selected area; and carrying out multi-physics field simulation analysis on the built environment digital twinborn model, realizing multi-physics field coupling simulation by combining a turbulence model, a radiation model and the like, analyzing a simulation result, and displaying analysis data in a visual form. According to the method, multi-source data are efficiently fused, the spatial scale of regional large-scale simulation research is expanded, and multi-physics field coupling analysis and quantitative analysis of a built environment are realized.

The present invention discloses a method for rapid three-dimensional modeling of mountain settlements based on a topographic map. The method comprises: obtaining a topographic map and extracting elevation point data, first building surface data, and building annotation data therefrom; generating an irregular triangulated network (TIN) and a digital elevation model (DEM) using the elevation point data; extracting building base elevation information from the DEM and integrating it into the first building surface data to obtain integrated second building surface data; extracting building height information from the building annotation data and integrating it into the second building surface data to obtain integrated third building surface data; performing three-dimensional stretching on the third building surface data based on the base elevation and building height information to generate a three-dimensional building surface; converting the three-dimensional building surface into a building three-dimensional model in an exchange format; and importing the irregular triangulated network and the building three-dimensional model into modeling software to generate a settlement three-dimensional model. The present invention can integrate terrain elevation, building graphics, and building height information in a topographic map, and achieve rapid and refined three-dimensional modeling of mountain settlements through parameterized three-dimensional stretching.

A method for automatic panel design and fabrication includes receiving a two-dimensional or three-dimensional architectural plan for a building, converting the architectural plan into a first data file that contains information about a location, length, and style of each wall included in the architectural plan, obtaining, from the first data file, a list of walls to automatically generate a second data file that contains a list of panels to be constructed for each of the list of walls, and generating a set of commands for each of panels in the list and transmitting the set of commands to a robotic builder, to allow the robotic builder to automatically build each of the panels in the list.

The invention provides a holographic transparent body twin dam construction method and device. The holographic transparent body twin dam construction method comprises the steps that a dam building information model is split to obtain a plurality of three-dimensional building information model components; according to the internal structure and part importance of the dam, performing development fineness grade classification on the plurality of three-dimensional building information model components to obtain a hierarchical weight coefficient of each component; and determining the transparency of the component according to the hierarchical weight coefficient and the spatial position weight coefficient. Dividing the dam building information model into polyhedral subdivision entity dam models of various scales, and calculating polyhedral unit transparency of each polyhedral unit in the model; and obtaining a three-dimensional physical data value of each polyhedral unit, and constructing the holographic transparent body twin dam based on the three-dimensional physical data value of each polyhedral unit, the transparency of the polyhedral unit and the component transparency of each three-dimensional building information model component. And the holographic transparent twin dam with holographic display of the appearance and the internal structure and holographic visual three-dimensional physical data in the dam can be constructed.