101results about How to "Realize 3D visualization" patented technology

The invention discloses a device and a method for structure-reconstruction-based subcutaneous vein three-dimensional visualization, which can acquire three-dimensional space information of a vein and skin. The method comprises the following steps: step 1, performing parameter calibration for three cameras; step 2, utilizing calibrated cameras to perform parameter calibration for the projector; step 3, utilizing structured light method to realize three-dimensional reconstruction of skin surface; step 4, adopting a template matching method to extract a vein central line in near-infrared images; step 5, adopting a pole line matching method to realize three-dimensional reconstruction of the vein central line; step 6, adopting a light projected method accelerated by a GPU (Graphics Processing Unit) to realize three-dimensional visualization of an opisthenar and the vein on a computer display; finally, simulating to obtain a projected image with the projector as a viewpoint according to the three-dimensional data, and projecting the image to the skin surface to be inspected to realize two-dimensional projected display.

The invention relates to an auxiliary management system for subway integrated pipeline construction. The system comprises a user management module, a three-dimensional management module, a construction management module and a logging module, wherein the user management module comprises user login authentication and logging off function; the three-dimensional management module comprises scene import, three-dimensional roaming, layer management, legend management and navigation functions; the construction management module comprises basic information management, pipeline modification management, spatial analysis, pipeline collision detection, process coordination, construction schedule management functions; and the logging module can record information on user operation on pipelines in real time. The auxiliary management system for subway integrated pipeline construction provided by the invention has the beneficial effect that three-dimensional visualization of construction process management is realized, so that construction schedule is more visual, and the representation of construction management effect is enhanced, and rework in pipeline construction process is effectively avoided; and through spatial analysis and pipeline collision detection means, the problem of spatial collision between professional pipelines can be effectively solved, and the smooth progress of projects is ensured.

The invention discloses a denture data processing and three-dimensional printing system comprising a data acquisition device, a data processing device and a three-dimensional printing device, wherein the data acquisition device comprises hand-held equipment, data storage equipment and display equipment; the hand-held equipment can be used for performing three-dimensional color scanning and image shooting on the mouth cavity; the data processing device is a computer, is provided with data reading recovery software and CAD design software, can be used for restoring and recovering data transmitted by the data acquisition device and designing and modifying the data, and then can be used for restoring the data to obtain a virtual simulated tooth model, namely, to obtain required virtual model data; and the three-dimensional printing device can be connected with the data processing device, and a required denture manufacturing working model can be obtained according to the obtained virtual model data by virtue of three-dimensional printing and molding. The denture data processing and three-dimensional printing system disclosed by the invention does not need to take tooth models, can also be used for preparing dentures by virtue of three-dimensional printing and rapid molding, is manpower-saving and short in cycle, and can also meet the personalized production requirements.

The invention relates to a method for realizing tunnel blasting quality digitalization based on BIM (Building Information Modeling) and multi-dimensional imaging fusion technologies. According to the method, three-dimensional reconstruction is performed for a tunnel face through a three-dimensional imaging technology; based on the BIM technology and technologies such as infrared thermal imaging and nuclear magnetic resonance, digitalized processing is performed on the tunnel face, so that evaluation and control on tunnel blasting quality can be realized. The method has the advantages of advancement, strong comprehensiveness, high prediction accuracy, good evaluation effect and the like. According to the method, a multi-source data acquisition module, a BIM fusion module, a BIM reconstruction and post-processing module and an integrated information management module are adopted; the multi-source data acquisition module import various kinds of acquired geological information into the BIM fusion module; the BIM fusion module carries out point cloud data processing and clusters obtained information into a multi-source heterogeneous fusion database; the obtained information is transferred to the BIM reconstruction and post-processing module; the BIM reconstruction and post-processing module carries out three-dimensional reconstruction and post-processing on point cloud data and image data information and transmits obtained information to the integrated information management module; and the integrated information management module carries out various kinds of management and application of tunnel blasting quality digitalized evaluation and control.

The invention discloses a preprocessing and segmentation threshold value determining method of volcanic CT images. The method comprises the following steps that volcanic CT sampling is conducted; the volcanic 2D CT images are collected; 2D CT image data are preprocessed; the images are superimposed to form a three-dimensional data body; a three-dimensional reconstruction body binaryzation threshold value method is improved and determined; a three-dimensional reconstruction model of the volcanic CT images is built, and three-dimensional display is conducted. The method resolves the problem of the dimensional restriction of analysis of a volcanic storage space in the prior art, expands the application range of the CT technique, enables a large number of oil field researchers to quantitatively conduct three-dimensional reconstruction of the volcanic CT images more conveniently, and has scientificity and universality.

The invention discloses an environmental risk preventing and controlling and contaminated site repair method for a gasoline station. The method comprises a daily monitoring pre-warning system of the gasoline station for realizing online monitoring of soil and underground water; a site environment characteristic analyzing system for realizing comprehensive site environment investigation and accumulating related parameters such as hydrogeological parameters for a 3D building design; a 3D model design system for site monitoring and risk estimation, defining the boundary and contamination degree of the site contamination by simulating a relocation diffusion process of contaminants in soil and an underwater medium and realizing three-dimensional visualization; and a contaminated site ecological repair system for realizing precise injection of a repair agent and degrading the contaminants in soil and underground water to achieve a set repair target by virtue of a 3D model design result by using an in-situ biological method. The method disclosed by the invention has the beneficial effects that the environmental risk of soil and underground water of the gasoline station is monitored and pre-warned in real time, site risk is estimated and the contaminated site is ecologically repaired.

The invention discloses a medical image three-dimensional visualization method applied to mobile handheld equipment. The method comprises the following steps that: a network connection is established in a server / client mode, wherein a medical two-dimensional fault data set and a medical image data list obtained by classifying the two-dimensional fault data set are stored in the server; and the client operated on the mobile handheld equipment controls the server to reestablish a medical image according to an operational command of a user and displays the medical image to the user through the client to realize three-dimensional visualization of the medical image of the mobile handheld equipment. The method avoids high-intensity computation of mobile equipment to ensure that the three-dimensional visualization of the medical image is realized in the mobile equipment; the server can provide services for a plurality of clients at the same time, so that the computing resource of the server can be fully used; simultaneously, the adopted mobile equipment supports multi-touch and wireless access and provides a natural interactive mode and reliable auxiliary information for medical personnel during movable medical diagnosis.

The invention discloses a modeling and designing method for an elevated structure BIM (Building Information Modeling) model. The method comprises the following steps: S1, generating a spatial three-dimensional line based on an extracted line plane and longitudinal section data; S2, extracting the position of a center point of a pier plane and a corresponding lower structure type, generating an initial model of members of the corresponding pier lower structure, and further generating a three-dimensional model of the lower structure; S3, extracting upper standard structure profile parameters corresponding to line mileage points, generating final upper structure profiles of the line mileage points, and sweeping and lofting based on the spatial three-dimensional line to generate an upper structure three-dimensional model; S4, generating a complete BIM model with an elevated structure. By adopting the method, three-dimensional visualization of an elevated structural design is realized, and the generated model is vivid and easy to modify. Moreover, a whole life period database of the elevated structure is established, so that more bases can be laid for later-stage operation and maintenance.

The invention discloses a cloud rendering three-dimensional visualization implementation method, relates to the technical field of three-dimensional visualization, and is used for solving the problemthat an existing three-dimensional GIS has high requirements on client equipment. The method comprises the following steps: creating a three-dimensional GIS service based on OpenGL and loading three-dimensional data; dynamically generating a real-time picture by frame rendering according to the three-dimensional data; and converting the real-time picture into a video stream and sending the video stream to a client, so that the client renders an HTML5 interface of the client according to the video stream. The invention also discloses a three-dimensional visualization realization system. According to the method, the three-dimensional GIS is created based on the OpenGL, the three-dimensional GIS picture is synchronized to the client through video stream compression, rendering is carried out through the cloud, the high-simulation three-dimensional visualization effect is achieved, and the requirement for the performance of client equipment is lowered.

The invention relates to a physical simulation experiment device and method for a hydrodynamic petroleum reservoir. The physical simulation experiment device comprises a hydrodynamic petroleum migration and accumulation simulation box, wherein the hydrodynamic petroleum migration and accumulation simulation box is connected with a water supply pool through a water injection system and a water output system to form a closed loop; the hydrodynamic petroleum migration and accumulation simulation box comprises a box body, wherein the box body is internally provided with a stratum body simulator and two water storage tanks located at two sides of the stratum body simulator; sand-proof infiltration screens are arranged at two sides of the stratum body simulator and the sides, connected with the stratum body simulator, of the water storage tanks; and a petroleum injection hole is formed in the lower end of the stratum body simulator, a water injection hole connected with the water injection system is formed in the lower end of the first water storage tank, a water outlet connected with the water output system is formed in the lower end of the second water storage tank, and a petroleum injection hole, a water injection hole and a water outlet are respectively formed in corresponding positions on the box body. By using the physical simulation experiment device for the hydrodynamic petroleum reservoir, the aims of simulating the influencing process of a hydrodynamic force to a petroleum reservoir, analyzing the formation mechanism and control factor of the hydrodynamic petroleum reservoir and deepening the comprehension on formation factors of the hydrodynamic oil reservoir are achieved, and the basis is provided for the petroleum exploration of petroleum-containing basins.

The invention relates to a multi-trap oil gas differential accumulation experimental simulation device and method. The device comprises a simulation box body, a pressure control system connected with the oil gas inlet and the oil gas outlet of the simulation box body, and a data processing and analyzing system connected with the pressure control system, wherein the simulation box body comprises an upper simulation chamber and a lower simulation chamber; the upper simulation chamber comprises an upper simulation chamber baseplate and a plurality of traps arranged on the upper simulation chamber baseplate; a hole for communicating each trap with the lower simulation chamber is formed between the trap and the lower simulation chamber; each trap comprises a trap bottom surface and a trap part movably connected with the trap bottom surface; a lower simulation chamber top plate is movably connected with the top of the lower simulation chamber. A sand body transporting layer and the traps are combined to realize the comprehensive physical experiment of oil gas transportation and accumulation, physical simulation of underground oil gas charging process can be realized in real, and related simulation experiment results can provide references for the oil gas transportation and accumulation mechanism and provide oil gas transportation and accumulation parameters for oil gas exploration and development.

The invention discloses a construction technical disclosure method based on a panoramic technology and a BIM (building information model). The method comprises the steps that (1) the BIM is established according to construction design; (2) mapping is performed on the BIM, and a material is given to the BIM; (3) rendering software is utilized to render six surfaces of the BIM to obtain a BIM effectimage; (4) picture splicing software is utilized to splice and synthesize six surface images of the BIM effect image to be in a spatial three-dimensional form, and a panoramic image of a three-dimensional space is obtained; (5) construction information and the panoramic image are correlated; (6) the panoramic image is displayed in the form of a QR code and a browsing URL; and (7) a constructor scans the QR code or clicks the browsing URL through terminal equipment to acquire all kinds of needed information. Through the method, the constructor can quickly and visually read a position relationbetween a construction major structure and a surrounding environment, three-dimensional panoramic dynamic interaction of the BIM is realized, and communication efficiency is remarkably improved.

The invention discloses a three-dimensional visualization method and system based on real-time dynamic segmentation and reconstruction. The method includes: establishing a cloud database, creating a three-dimensional static scene model of an industrial field; based on the cloud database, reconstructing a three-dimensional real-time dynamic model of an industrial field and drawing a 3D analysis chart; constructing a user interaction interface; achieving three-dimensional visualization of an industrial field based on the user interaction interface. The technical problem that traditional industrial monitoring software is not comprehensive or visual in industrial field data monitoring is solved. Based on industrial field data obtained in real time, A three-dimensional real-time dynamic model and a 3D analysis chart can be generated; the static scene model is used to display the change condition of the data in a more intuitive manner, omnibearing real-time monitoring is carried out on the working condition of the industrial field, 3D visualization of a measurable object of the industrial field is realized, and the method has the advantages of real-time performance, operability, high compatibility and intuition, and is suitable for data monitoring of the industrial field.

The invention discloses a three-dimensional (3D) visualization and informatization modeling system and method for energy pipes. According to the system and method, the technical route of "space delamination-management object classification" is adopted to establish a three-dimensional topological graph for the energy pipes in a whole factory, the three-dimensional topological graph is adopted to establish a corresponding three-dimensional model, and therefore the problem that the trend of the energy pipes is not clear is solved; splitting and encoding are performed on the three-dimensional model according to practical management precision, a pipe section contained in each pipe is encoded as "type-region-main branch pipe-sequence code", therefore, the problem that the energy pipes cannot serve as management units is solved, and fine management of the energy pipes is realized; and a pipe information base is established according to splitting and encoding results of the three-dimensional model, information base standard information is associated with three-dimensional pipe sections, bidirectional interconnection of the power energy pipe three-dimensional model and the information is realized, and the problems that energy pipes are difficult to manage and information is scattered and disordered are solved.

The invention provides an autonomous positioning method and device based on inertial navigation data and used for a coal cutter. The method comprises the following steps: according to an inertia sensor mounted on the coal cutter, measuring in a carrier coordinate system, thus obtaining first positioning data of the coal cutter, wherein the first positioning data comprises a translational acceleration of the coal cutter in the carrier coordinate system and a rotational angular velocity of the coal cutter in the carrier coordinate system; performing integral calculation on the translation acceleration in the first positioning data by combining initial estimated values of a speed and a position of the coal cutter, thus obtaining second positioning data in a navigation coordinate system; constructing a first attitude matrix in the carrier coordinate system, and performing differentiation, thus obtaining a second attitude matrix in the navigation coordinate system; according to the second attitude matrix, performing an inverse operation, thus obtaining an attitude angle of the coal cutter in the navigation coordinate system; and according to the second positioning data and the attitude angle, determining the position of the coal cutter in the navigation coordinate system.

The invention discloses a mine ventilation system building method based on DIMINE software. According to the method, a mine ventilation system three-dimensional model is built through the DIMINE software; the DIMINE file format of the built ventilation system three-dimensional model is converted into a file format compatible with 3DVent software; according to the ventilation network resolution technology requirements, the mine ventilation network resolution work is completed through combining the actual conditions of a mine; according to the ventilation network resolution result, the mine ventilation system design and modification scheme optimization work is completed; according to the ventilation network resolution result, the three-dimensional visualization and air flow animation simulation software realization technology study of the ventilation network resolution result is developed; and the real three-dimensional visualization and air flow animation simulation of the mine ventilation network resolution result is realized. The method has the advantages that the resolution step is simplified; the work efficiency and the accuracy are improved; the electric energy can be saved; the ventilation cost is reduced; the underground microclimate conditions are improved; and a good operation environment is created for underground workers.

The invention discloses a three-dimensional visualization method of magnetic resonance elastography, comprising the following steps: stimulating an imaged object, applying sensitive gradient on three mutually perpendicular directions and scanning to obtain the initial phase image data of the imaged object at the three mutually perpendicular directions; changing the initial phase of the stimulation and scanning the imaged object to obtain the phase change image data of the imaged object at the three mutually perpendicular directions; constructing a three-dimensional visual model according to the initial phase image data and the phase change image data and setting up an image. In the three-dimensional visualization method of magnetic resonance elastography, the initial phase image data and the phase change image data, namely the three-dimensional image data along with variation of time, are obtained by changing the initial phase of the stimulation, which means so as to construct the three-dimensional visual model of the magnetic resonance elastography to realize three-dimensional visualization of the magnetic resonance elastography. In addition, a system for three-dimensional visualization of magnetic resonance elastography is provided.

A visual test device used for low-temperature liquified gas is provided. The visual test device includes an inner tank body, an insulating layer, an outer tank body and a cover plate. Tops of four side surfaces of the inner tank body are bent outwards by 90 degrees to form a tank body top surface. The cover plate is a transparent cover plate and is mounted in a sealed manner at the tank body top surface to form a top observation window. Front and back side surfaces of the inner tank body, the insulating layer and the outer tank body are provided with a plurality of mounting holes. The front and back side surfaces of the tank bodies are mounted with side observation windows through the mounting holes. The two sides of the test device are provided with the eight observation windows so that situations in the test device can be observed dynamically, and the large observation window is designed at the top, and therefore the inside of the test device is visual in a three-dimensional manner and the visual range is greatly increased.

The present invention discloses a WeChat platform-based curtain wall GRC three dimensional visual management system and a usage method thereof. The system comprises a user registration and login unit used for registering and logging in, an information recording unit used for recording the information of a GRC board, a two-dimensional code generating unit used for generating two-dimensional codes, a code scanning unit used for scanning the two-dimensional codes, a user authority management unit used for authority management, an acceptance check management unit used for detecting the acceptance check, an installation positioning step by step display unit used for displaying the installation position information of the GRC board and a three dimensional visual and statistics unit used for displaying the construction progress. According to the present invention, a curtain wall GRC construction management acceptance check process operation on a mobile phone, the curtain wall GRC step by step three dimensional visualization and the curtain wall GRC paperless acceptance check are realized, and the information of the curtain wall GRC board is inquired real-timely.

The invention discloses a three-dimensional visualization method and system of OCT (optical coherence tomography) images. The three-dimensional visualization method comprises the following steps that: data reading step: a slice image sequence composed of a plurality of OCT images is read into a volume database; classification step: the plurality of OCT images in the volume database are converted into optical properties for drawing; synthesis step: various optical parameters in the optical properties are superposed, so that the plurality of OCT images can be synthesized into a final image; and display step: the final image is displayed. With the three-dimensional visualization method and system of the OCT images provided by the invention adopted, the quality of images can be improved, and processing speed is also improved.

The invention relates to the technical field of automatic monitoring, in particular to an intelligent road network system based on BIM, comprising a data acquisition module used for data acquisition of highway traffic, safety, environment and vehicle information. A basic service module, configured to receive and store data of the data transmission module through the data transmission module; The data processing and analysis module is used for receiving, processing and analyzing the data of the basic service module and providing auxiliary decision-making information for managers, staff and drivers respectively. Business application module for acquiring and sharing highway information; The BIM + GIS model module is used for importing and displaying the highway three-dimensional model and integrating with the business application module to realize three-dimensional visualization and fine management. The invention provides an intelligent road network system based on the BIM, which can effectively monitor the highway condition, realize the full sharing of the data of the managers, the staff and the drivers, and can provide convenience for the public travel.

The invention relates to a seamless linkage method of a highway three-dimensional model database and a digital elevation model database, relates to a method for matching the highway three-dimensional model and the digital elevation model database, is used for solving the problem that the highway three-dimensional visualization technique is only three-dimensional visualization of a highway model and difficulty calculates that soil excavation or filling operation is carried out on the earth surface, and is used for guiding construction. The method comprises the steps of: extracting elevation coordinates of each point in a specific point extraction mode according to the highway three-dimensional model database to build a digital matrix; building a digital matrix of the elevation coordinates of each point according to the digital elevation model database of a highway roadbed earth surface, wherein the elevation coordinates with the same horizontal coordinates in the two digital matrixes are mapped one to one; and correcting the elevation coordinates in the digital elevation model database of the highway roadbed earth surface with the elevation coordinates corresponding to the digital matrix in the highway three-dimensional model database as a reference, and building a data sheet of differences of elevation coordinates of all points between the highway three-dimensional model database and the digital elevation model database.

The invention relates to a three-dimensional visualization method, in particular to a three-dimensional visualization method for engineering structure disease information. The three-dimensional visualization method includes the following steps: 1, building a three-dimensional model of an engineering structure according to drawing information, and placing and fixing the three-dimensional model into a three-dimensional scene coordinate system; 2, extracting attribute information and position information from the disease information, and then determining disease marking bodies in a three-dimensional scene according to the following steps: 2a, determining the appearance attributes of the disease marking bodies according to the disease attribute information, and assigning base points of the disease marking bodies; 2b, determining three-dimensional coordinates of the base points of the disease marking bodies in the three-dimensional scene according to the disease position information; 3, adding the disease marking bodies into the three-dimensional scene one by one, and displaying the three-dimensional space.

The invention discloses a visualization programming platform based on a mobile terminal and a two-dimensional drawing three-dimensional visualization method, belonging to the technical field of building engineering. the visualization programming platform based on the mobile terminal, comprises a basic module being realized by a Unity 3d development platform; a parameter configuration module, configured to provide an annotation card picture; an interactive module, being realized by Unity 3d development platform and PlayMaker visual programming module. The two-dimensional drawing 3D visualization method based on mobile end, includes: importing the three-dimensional building information model into the Unity 3d development platform and setting corresponding relationship between two-dimensionalconstruction drawings and three-dimensional building information model on Unity 3d development platform, After scanning the two-dimensional construction drawings by the moving end, displaying the corresponding three-dimensional building information model on the screen of the moving end, and making the explosion effect animation and restoration effect animation of the three-dimensional building information model by the visual programming platform, so as to realize the three-dimensional display of the two-dimensional construction drawings on the moving end.

The invention relates to a fragment scattering parameter determination method based on an image processing technology. The fragment scattering parameter determination method comprises the following steps: establishing a warhead static explosion scene equivalent target plate three-dimensional model; before a warhead explodes, marking each target plate with a serial number; after the warhead explodes, collecting images of a target plate collected one by one through correspondingly-arranged serial numbers to acquire original images of the target plates are obtained; correcting the collected original image of each target plate to obtain a corrected target plate image; carrying out perforation detection on fragments on each correction target plate image, and removing a false target; extractinga two-dimensional coordinate of the central position of the fragment perforation on the correction target plate image, converting the two-dimensional coordinate to an equivalent target plate in the three-dimensional model, and obtaining a three-dimensional coordinate parameter of the central position of the fragment perforation; utilizing the three-dimensional coordinate parameter of the central position of the fragment perforation to calculate the flying parameter of the perforation on the equivalent spherical surface. The fragment perforation can be quickly, accurately and effectively identified, the position of the fragment perforation can be accurately measured, and fragment parameters can be determined.

The invention discloses a plant whole-genome multilevel biological network reconstruction method based on multi-omics data integration. The method carries out integration on a rice gene regulation andcontrol network, a protein interaction network and a metabolic network to finish the construction of a rice multilevel regulation and control network; and meanwhile, through the integration of expression profile data in different tissue growth processes of the rice, according to the constructed rice multilevel regulation and control network, a specific tissue multilevel gene regulation and control network is constructed so as to construct a first high-quality rice genome scale multilevel biological network of which the current data level is most integral. A new thought is provided for the construction of the plant multilevel biological network, and a constructed rice multilevel gene regulation and control network database realizes the 3D (Three-Dimensional) visualization of the multilevelregulation and control network.

The invention provides a miniature comprehensive pipe gallery health monitoring system based on multi-physical field coupling analysis. The miniature comprehensive pipe gallery health monitoring system comprises a processing module, a conversion module, a transmission module and a sensor group, the sensor group comprises a water leakage sensor, a temperature sensor, a humidity sensor, a water pressure sensor, a water flow sensor and a gas sensor. The invention further provides a miniature comprehensive pipe gallery. The miniature comprehensive pipe gallery comprises a water supply pipe, a communication cable, a power cable and the miniature comprehensive pipe gallery. The invention further provides a monitoring method of the miniature comprehensive pipe gallery health monitoring system based on multi-physical field coupling analysis. On the basis of monitoring all index parameters in the pipe gallery in real time, associated monitoring indexes are analyzed more meticulously through multi-physical field coupling, and early warning is carried out on abnormal index parameters, so that targeted and effective monitoring is carried out on the miniature comprehensive pipe gallery, and theoperation safety and reliability of the miniature comprehensive pipe gallery are ensured.

The invention particularly relates to a feature recognition method and device of asphalt road pavement micro-topography based on micro-vision. The technical scheme of the feature recognition method and device of the asphalt road pavement micro-topography based on the micro-vision consists of the feature recognition device of the asphalt road pavement micro-topography based on the micro-vision and the recognition method of the asphalt road pavement micro-topography based on the micro-vision. The structure of the feature recognition device of the asphalt road pavement micro-topography based on the micro-vision is that a micro-amplification lens (2) is perpendicularly arranged at the left end of an upper support of a support (6), and the tail portion of the micro-amplification lens (2) is connected with a CCD (Charge Coupled Device) camera (1); and an automatic object stage (5) is arranged right below the micro-amplification lens (2), a linear array laser (3) is arranged on an oblique support, the point of intersection of the center line of the installed linear array laser (3) and the center line of the micro-amplification lens (2) is located at a position 2 cm above the automatic object stage (5). Feature recognition software of the asphalt road pavement micro-topography is arranged in a computer (8). The feature recognition method and device of the asphalt road pavement micro-topography based on the micro-vision has the advantages of automation, high accuracy and three-dimensional visualization.

The invention discloses a 3D building modeling method. The method includes the following steps of collecting item rule data, item information data and original model data to establish a rule database, an information database and a model database respectively, designing and generating a building structure and building internal decoration of a 3D form, detecting the reasonability of the building structure and the building internal decoration according to the rule database, and generating a 3D building model if the design of the building structure and the building internal decoration is reasonable. The invention further discloses a 3D building modeling system. The system comprises a database module, a design module, a detecting module and a model generating module. By means of the 3D building modeling method and system, 3D visualization of the house building and the internal decoration is achieved, and the effects of the building structure and the internal detection can be conveniently experienced in advance through the 3D building model.

The invention discloses a method for quickly establishing an intracranial blood vessel simulation three-dimensional model based on transfer learning. The method comprises the following steps: collecting a bright blood image group and an enhanced black blood image group of an intracranial blood vessel part; preprocessing each bright blood image and the corresponding enhanced black blood image to obtain a first bright blood image and a first black blood image; performing image registration on the first bright blood image by using mutual information based on Gaussian distribution sampling and a registration method of an image pyramid; utilizing a maximum intensity projection method to obtain MIP images in all directions from the registered bright blood image groups; taking the MIP image as atarget domain, taking the fundus blood vessel image as a source domain, and obtaining a two-dimensional blood vessel segmentation image by using a transfer learning method; performing back projectionsynthesis on the two-dimensional blood vessel segmentation images in the three directions to obtain first three-dimensional blood vessel body data; and obtaining an intracranial blood vessel simulation three-dimensional model by utilizing the second three-dimensional blood vessel body data corresponding to the registered bright blood image group. According to the method, the whole state of the intracranial blood vessel can be simply, conveniently, quickly and visually obtained clinically.