150 results about "Three dimensional architecture" patented technology

The invention discloses a civil engineering cost evaluation method and system based on model optimization, and particularly relates to the technical field of civil engineering cost evaluation. Three-dimensional building information and the actual environment of a construction site are combined by establishing a virtual simulation scene based on a BIM model and combining a virtual reality or augmented reality technology, meanwhile, environment variables related to actual construction are dynamically introduced, the variables are analyzed through a machine learning algorithm, risk assessment is conducted on different construction stages, and the risk assessment efficiency is improved. The BIM model is dynamically adjusted and optimized, and based on the optimized BIM model and the risk assessment result, cost assessment is performed for different construction schemes and a report is output, so that the difference between a traditional virtual environment and a real construction condition is effectively made up, the construction cost and risk can be accurately predicted, project hyperbranched and delay are reduced, and the construction efficiency is improved. And more accurate cost evaluation and construction management are realized.

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 technical field of three-dimensional modeling, and discloses a panorama, point cloud and BIM-based model construction method, which comprises the following steps: acquiring multi-view point cloud data of a building, and aligning the multi-view point cloud data to the same coordinate system to obtain three-dimensional point cloud data; acquiring a plurality of panoramic images of the building, and splicing the plurality of panoramic images according to the feature points of the panoramic images to construct three-dimensional panoramic image data; performing standardization processing on the three-dimensional point cloud data and the panoramic image data to obtain standard point cloud data and standard panoramic image data; and obtaining building information model data from preset BIM software, and fusing the standard point cloud data, the standard panoramic image data and the building information model data based on a preset space coordinate system to construct a unified three-dimensional building model. The invention further provides a model construction device and equipment based on the panorama, the point cloud and the BIM and a storage medium. According to the invention, the accuracy of the constructed three-dimensional model can be 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 relates to a programmed reconstruction method, system and device for a building structure and computer equipment. The method comprises the steps of obtaining point cloud data of a target building, and performing feature extraction on the point cloud data to obtain a geometric feature map; based on a preset coding language, the geometric feature map is converted into a building coding statement, and the building coding statement is used for representing a building structure; the building coding statement is converted into a target building tree, the target building tree comprises a plurality of nodes, and the plurality of nodes represent heights and contours of different levels in a target building; and constructing a three-dimensional building model of the target building based on the target building tree. The method can effectively solve the challenges in the prior art when processing the sparse, more-noise and non-uniformly-distributed point cloud data, and provides a new way for efficiently and accurately recovering the complex building three-dimensional model from the low-quality point cloud data.

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 embodiment of the invention discloses a building boundary identification method based on a live-action three-dimensional technology and multi-source fusion data. One specific embodiment of the method comprises the following steps: carrying out shielding object identification on each initial building three-dimensional image in an initial building three-dimensional image set; building segmentation is carried out on the building area remote sensing image; extracting a building object feature information set corresponding to each building segmentation object included in the building segmentation image; according to the building object feature information set and the building three-dimensional image set, performing live-action three-dimensional modeling on the building area to be subjected to right registration; performing point cloud extraction on the live-action three-dimensional building model; and according to the building point cloud data set, extracting boundary information of each building in the building area to be subjected to right registration. According to the embodiment, the three-dimensional image of the sheltered building can be collected again, so that the accuracy of boundary right confirmation is ensured, the accuracy of building boundary extraction of right confirmation registration is improved, and the error of building right confirmation registration is reduced.

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 method for generating a complex-shape three-dimensional building model based on frame field deep learning. The problems that in the prior art, when a three-dimensional building model is generated, training difficulty is large, the three-dimensional building model is easily affected by smooth corners, and artifacts are generated are solved. The method comprises the following steps: S1, acquiring remote sensing data and point cloud data; s2, preprocessing the acquired image data; s3, carrying out data normalization processing; s4, designing a frame field and optimizing details; s5, optimizing the activity skeleton model; and S6, generating a multi-shape contour and a three-dimensional model. The method has the advantages that the generation precision and the generation efficiency of the three-dimensional building model are improved, buildings with complex shapes can be processed, and the method has a wide application prospect.

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.

Additives for three-dimensional build materials or inks are described herein which, in some embodiments, can impart one or more structural enhancements to articles printed from the build materials. In one aspect, a polymerizable liquid comprises at least one additive including a plurality of cyclopolymerizable functionalities separated by an aliphatic linker or alkylene oxide linker.

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 provides a design method of a building viscous damper device, and belongs to the technical field of building earthquake resistance, and the method comprises the following steps: obtaining building drawing data, constructing a building three-dimensional model and installing a sensor, simulating seismic waves to carry out impact vibration on the three-dimensional building model, detecting stress data, and designing a corresponding viscous damper device of a building. A mechanical model of the viscous damper device is established to obtain an improved viscous damper device, the improved viscous damper device is installed on the building three-dimensional model, then secondary vibration is conducted, the damping effect is detected, the viscous damper device is corrected according to the detected effect, and the final viscous damper device is obtained. According to the characteristics of each building, a viscous damper device is simulated and arranged, then vibration stress tests in different directions are carried out, then stress test data of the viscous damper device are detected, the corresponding viscous damper device is arranged according to the characteristics of the building, and the anti-seismic effect of the viscous damper device is the best.

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 present invention relates to the field of digital information technology, and discloses a method and system for dispatching and allocating firefighting resources in a building based on BIM data, including: fusing BIM data and sensor data to obtain multi-dimensional fusion data; constructing a three-dimensional building model of a target building according to the multi-dimensional fusion data, simulating a fire on the three-dimensional building model, and obtaining a fire data image; extracting fire factor features of the fire data image, generating an evacuation path of the target building according to the fire factor features, allocating firefighting resources according to the evacuation path, and obtaining a firefighting resource allocation vector of the evacuation path; calculating a resource allocation score of the firefighting resource allocation vector; when the resource allocation score is greater than a preset resource allocation threshold, generating a firefighting resource dispatching strategy according to the firefighting resource dispatching vector, and allocating firefighting resources according to the firefighting resource dispatching strategy. The present invention can improve the accuracy of dispatching and allocating firefighting resources in a building.

The invention relates to an artificial intelligence-based automatic generation method and system for architectural design scenes, and relates to the field of architectural design technology. The method comprises: obtaining architectural design scheme data; determining architectural design features according to the architectural design scheme data; generating a three-dimensional architectural model based on the architectural design features; performing rendering optimization on the three-dimensional architectural model based on an artificial intelligence model to generate architectural scene renderings from multiple different perspectives; obtaining effect estimation parameters of the artificial intelligence model for the architectural scene renderings, and generating evaluation results in combination with correction instructions input by a user to correct the effect estimation parameters; and re-rendering and optimizing the three-dimensional architectural model using an artificial intelligence model according to the evaluation results until the evaluation results of the generated architectural scene renderings meet a preset threshold. The implementation of the method can improve the display quality of architectural design.

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 an intelligent building pipeline layout scheme optimization method and system, a medium and a product, and the method comprises the steps: determining a three-dimensional building grid structure according to the size of a preset building space and the size of a preset grid unit; extracting an initial pipeline layout scheme based on the construction project file; according to a grid unit to which the three-dimensional coordinate point set of the pipeline belongs in the three-dimensional building grid structure, filling the grid unit with a corresponding pipeline number; traversing the filled three-dimensional building grid structure, and adding conflict point marks for grid units containing a plurality of pipeline numbers; based on a preset optimization strategy, performing space adjustment on corresponding pipelines in the grid units with the conflict point marks, and deleting the conflict point marks of the grid units of which conflicts are solved; and when it is determined that there is no conflict point mark on the grid unit, updating the three-dimensional coordinate point sets corresponding to the plurality of pipelines, and generating an optimized pipeline layout scheme. By implementing the method, the efficiency and precision of pipeline arrangement are improved.

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 invention relates to the technical field of civil engineering, in particular to a building safety performance evaluation method and system, and the method comprises the following steps: collecting the image information of the internal and external dimensions and structure of a building based on a three-dimensional laser scanning device, and constructing a three-dimensional building information model in real time through the analysis of the external dimension and internal structure of the building, and outputting the three-dimensional structure data set. According to the invention, by collecting the size and structure information of the building, constructing the building information model and identifying cracks and structure defects, the safety state of the building is evaluated in time, the performance of various building materials under different environmental conditions is analyzed, and the prediction capability of the durability of the building is enhanced; according to the method, the structural stability and durability of the building are accurately evaluated, the influence of fire and natural disasters is considered, the safety performance of the building is comprehensively evaluated, the predictability of the safety of the building is improved, the risk of accidents is reduced, and the life and property safety of residents is guaranteed.