737 results about "Entity model" patented technology

A social network model, based on data relevant to a user, is used for semantic processing to enable improved entity recognition among text accessed by the user. An entity extraction module of the server, with reference to a general training corpus, general gazetteers, user-specific gazetteers, and entity models, parses text to identify entities. The entities may be, for example, people, organizations, or locations. A social network module of the server builds the social network model implicit in the data accessed by the user. The social network model includes the relationships between entities and an indication of the strength of each relationship. The social network module is also used to disambiguate names and unify entities based on the social network model.

A distributed virtual environment includes one or more entities represented in the virtual environment by at least a conceptual entity-model, a dynamic entity-model and a visual entity-model each of the entity models being mutually independent. A server provides a conceptual-model manager, arranged to provide conceptual entity-models, one or more dynamic-model managers arranged to provide dynamic entity-models, and one or more client apparatuses arranged to provide a visual-model manager arranged to provide visual entity-models. Communications is arranged to allow transmission of messages between the conceptual-model manager, one or more dynamic-model managers and one or more visual-model managers.

A method of carrying out a business process includes obtaining an entity model representative of an entity to which a task associated with said business process can be assigned, obtaining a work model representative of a task to be assigned to said entity, and assigning said task to said entity based on said entity model and said work model to thereby carry out said business process. A method for optimizing a business process includes collecting a first set of data associated with an execution of a first business process model representative of a first business process, searching a data base for a second business process model representative of a second business process, and comparing said first set of data with a second set of data associated with said second business process.

The invention relates to a three-dimensional entity model surface finite element mesh automatic generation method which has the characteristics of good dimension control performance of mesh quality, density and dimension, good convergence in a dividing process, high calculation efficiency, stability and reliability. The method comprises the following steps: (1.1) establishing a three-dimensional geometrical model, reading an STL neutral file of a model surface, and reconstructing a topology relation of triangle patches; (1.2) according to a relation between a triangle patch and an adjacent patch, grouping surface triangle patches, wherein each group of triangle patches is a characteristic face; (1.3) determining boundaries of each characteristic face, and determining characteristic edges on each characteristic face boundary; (1.4) according to mesh density distribution, generating mesh nodes on each characteristic edge, and expressing boundaries of the characteristic face with mesh node rings on the boundaries; (1.5) selecting a cut surface and an optimal dissection surface, and generating mesh nodes on cut lines and dissection lines; (1.6) generating a surface mesh on each characteristic face, and carrying out smoothing process.

The invention relates to an intracranial tumor comprehensive operation planning and simulating method based on the 3D print technology. DICOM data obtained through patient spiral CT craniocerebral enhancement scanning are utilized first, different partition methods are adopted for data information extraction and reconstruction according to characteristics of skulls, blood vessels and tumors, and registration and fusion of the skulls, the blood vessels and the tumors are achieved in the same coordinate system; craniocerebral entity models of patients are obtained through a rapid prototyping technology and a virtual three-dimensional geometrical model after optimizing processing is conducted; information of diameters, sizes and the number of tumors and adjacent relations between the diameters, the sizes and the number of tumors and important blood vessels and tissue around is extracted, and preoperative comprehensive risk analysis, operation plan design, operation plan simulation and operation risk response analysis are carried out on the basis of the craniocerebral entity models of the patients, personalized operation plans are provided for the patients in order to improve the accuracy and success rate of intracranial tumor excision operations, and a feasible intracranial tumor operation planning and simulating method based on the 3D print technology is explored.

The invention relates to the field of distributed combat simulation,and provides a battle simulation training system and method of attack drone formation. According to physical nodes,the battle simulation training system is divided into a drone and launch platform simulation node,a drone formation command node,a ground plan control node,a neighbour equipment simulation node,an enemy troop simulation node,a tactical communication simulation node,a situation display node,a train control node and a data record analyze node; according to battle simulation modeling,an environment simulation model,amodel system which comprises a simulation entity model and a military conceptual model is established. The battle simulation training system has good supporting effects on tactical cooperative training,operational plan deduction and equipment improvement and optimization of the attack drone formation.

The invention discloses a method for building a robot simulation drilling system based on a reality scene. The method comprises the following steps: obtaining depth image information of the reality scene, and transforming the depth image information into discrete three-dimensional point cloud data; interpreting the three-dimensional point cloud data into a semantic map which can be understood by a robot; inputting the discrete three-dimensional point cloud data into three-dimensional modeling software, and carrying out geometric modeling on a virtual scene, so as to obtain a three-dimensional entity model of the virtual scene; introducing the three-dimensional entity model into a 3DS MAX to map and render, so as to obtain a three-dimensional space scene model; carrying out geometric modeling on the robot in the 3DS MAX, so as to obtain a virtual robot model; introducing the three-dimensional space scene model and the virtual robot model into an OGRE (object-oriented graphics rendering engine), building a physical model and a power model of the three-dimensional space scene, and building a virtual scene simulation system.

A finite element pre processing method for reconstructing a three-dimensional entity model comprises the steps that first, a material object is scanned so that point cloud data can be acquired; second, the point cloud data are imported to 3-matic software, and the position of the model is adjusted; third, the point cloud data are de-noised and sampled; fourth, three-dimensional reconstructing of the point cloud data is performed through a computer, wherein the point cloud data are packaged so that a surface mesh model can be generated; fifth, thin wall characteristic analysis is performed on the model so that a basic model structure can be known; sixth, three-dimensional repair is performed on model meshes, so that the edges of the model are matched with the defect contour of the material object; seventh, the model is redesigned as required, and thus the structure of the model can be more reasonable and meet the design requirement; eighth, the meshes of the redesigned model are partitioned again; ninth, a volume mesh is generated, material attributes are added, and the new model is saved in the format through which finite elements can be directly analyzed; tenth, finite elements are analyzed. Through the method, the scanned data processing time is shortened and FEA/CFD pre processing time are shortened, and optimal design of the model can be conveniently performed.

The invention discloses a method for optimally designing dynamic property of a complete machine tool, which comprises the following steps of: establishing a complete machine tool entity parameterized model, simplifying the structure according to the analysis requirement on the dynamics and the structure characteristic of the machine tool; and guiding the simplified entity model into a finite element analyzing software ANSYS/Workbench for grid division to obtain a complete machine finite element model. The statics analysis is carried out through the ANSYS/Workbench to obtain a complete machine prestress field, and the mode of the complete machine tool under the prestress field is obtained through the mode analysis. The complete machine tool dynamics response of a main shaft, caused by a cutting force, under different rotating speeds is obtained through resonance response analysis on the complete machine tool, and the reference is provided for the searching of the dynamics thin link and the optimization design. Finally, by using the parameterized analysis method, the rule of influencing the complete machine tool dynamic property by the structure quality and the rigidity parameter is obtained, and the dynamic rigidity thin link is obtained and optimally designed.

The invention discloses a method for analyzing fluid dynamics and structural mechanics of wind generator blades, which comprises the following steps: combining CFD and CAE methods, determining each parameter of an impeller model by adopting the momentum blade element theory, designing an entity model of the blade, establishing a three-dimensional model of a windmill blade, a hub and a peripheral wind site based on a Gambit software platform, meshing the model by adopting a partial structuring method, setting a proper boundary condition, calculating the performance of a finite element based on a Fluent software platform, extracting the blade torsion and calculating the blade power and the blade efficiency, establishing a blade structural model based on an ansys software platform and meshing the blade structural model, applying load and restraint condition to the blade structural model, analyzing the mode of the blade structure, performing equal torque treatment for pressure distribution acquired by the Fluent software platform, applying pressure surface load to the ansys software platform, calculating the structural mechanics characteristics of the wind generator blades, and extracting blade deformation and stress distribution characteristics.

The invention discloses an assembled type concrete structure three-dimensional collaborative design method. The assembled type concrete structure three-dimensional collaborative design method comprises the steps of completing assembled type building splitting design according to drawing data, preparing a Revit item center file, establishing parameter models of a prefabricated member and a cast-in-situ node, loading the parameter member and the cast-in-situ node into a Revit item center file to form an overall model, revising members of all types, completing model overall information input and single member plotting and the like. Based on a Revit platform, by establishing a visualized three-dimensional entity model, then design, revising and plotting are conducted through a synergetic mode. The assembled type concrete structure three-dimensional collaborative design method has the following advantages that regardless of a two-dimensional abstract drawing mode, visualized three-dimensional modeling is achieved; the same model jointly represents all profession information, professional interaction is achieved, and repetitive adjusting and revising is avoided; modeling and plotting time of members of the same type is shortened, the efficiency is improved, the quality is unified, and management is facilitated.

The invention discloses an existing bridge quick BIM modeling system and method. The three-dimensional laser scanning technology serves as a bridge three-dimensional geometric data acquisition tool, and the limitation of passive ranging in traditional close-range photogrammetry, namely limitation of natural light conditions, is overcome. In actual application examples, by comparing a BIM model built through three-dimensional scanning and an actual building, it is found that the similarity between the BIM model and the actual building can reach 90% or above. A full-color-point cloud model is obtained through the three-dimensional scanning technology, a vivid and fine virtual model can be generated through three-dimensional entity modeling software processing, the method can be used for webpage real-time publish and sharing, and the cooperative work efficiency is improved. The whole BIM modeling process is convenient, quick and precise, as for small-and-medium-sized bridges, it takes a few hours from field work scanning to building of the whole BIM model, and model errors can be controlled at the millimeter level.

The present invention relates to the technical field of geospatial information systems and discloses a method for converting a BIM entity model into a multiple levels of details (LOD) GIS standardized model. Through a method of converting the BIM entity model into the multiple levels of details (LOD) GIS standardized model, the automatic conversion from the BIM entity model to the multiple levels of details (LOD) GIS standardized model is realized, a computer can conveniently execute the geometric semantic information interoperability between two models, the complete conversion and mapping between an IFC format and a CityGML format is realized, and the conversion quality is improved. In addition, the conversion method has the advantages of fast conversion speed and high conversion accuracy, and the practical promotion and application are facilitated.

The invention provides a three-dimensional printer, a printing method of the three-dimensional printer and a printing device of the printing method. The printing method of the three-dimensional printer comprises the following steps: starting the three-dimensional printer which comprises a printing head for entity imaging and an ink jet head for color imaging; inputting a model file with target entity model data into a memorizer; slicing and layering according to the target entity model data through a processor, processing and obtaining a plurality of layering model data; performing entity imaging according to each layering model data through the printing head; performing color imaging on the layering model according to the layering model data in the same layer through the ink jet head. The invention provides the printing device and the three-dimensional printer using the method. By performing color imaging on each layering model, the colorful printing of the overall three-dimensional entity is achieved finally, then the structure of the three-dimensional printer is simplified, and the three-dimensional printer has the advanstages of low imaging cost, high color reproduction accuracy, high image resolution ratio, simple imaging method and the like.

The invention provides a three-dimensional entity model reconstruction method based on dense point cloud data. The dense point cloud data is acquired by a laser 3D scanner; 3D laser scanning can rapidly acquire three-dimensional coordinate data of the surface of a measured object in a large-area and high-resolution manner; a rapid and high-precision modeling method is matched, so that the characteristics of rapidness, non-contact, initiative, accuracy and the like are highlighted, data obtained in real time has the characteristics of high accuracy, high density and the like, reconstruction ofa three-dimensional model becomes more convenient, a digital model of an actual object can be created in the virtual world, and rapid and high-accuracy three-dimensional entity model reconstruction based on dense point cloud data is achieved; according to the semantic-based feature extraction method, a large amount of working time is saved, the semi-automatic mode is adopted for operation, the feature extraction precision and accuracy are effectively improved, the cost is greatly reduced, and the precision of the reconstructed three-dimensional solid model is obviously improved.

The invention provides a wide-range high-precision matched digital channel three-dimensional visualization method. For a scene graph technology-based channel scene organization method and an incremental component-based similar model modeling method, a wide-range channel terrain which accords with earth curvature change and is completely matched with an electronic chart is established, a k-crossing tree structure scene graph of a channel scene three-dimensional entity model is established, and the channel scene three-dimensional entity model which has the characteristics of wide ranges of three dimension, dynamic and scene, irregular entity and the like is organized, expressed, multiplexed and parallelly quickly developed; and based on a dynamic data configuration technology, a database paging scheduling policy is combined, and the wide-range channel three-dimensional entity model is subjected to high-precision matching, dynamic management and real-time smooth drawing. By the method, wide-range channel high-precision and high-efficiency three-dimensional visualization is realized, and inland water transportation boatmanship training and the visualization construction of Yangtze River digital channels are promoted.

The invention discloses a finite element method-based storage battery thermal management analysis and optimization method. The finite element method-based storage battery thermal management analysis and optimization method comprises the following steps of: acquiring parameters of a plurality of batteries and a battery pack respectively and establishing three-dimensional models of the plurality of batteries and the battery pack; performing the meshing of a definite element on the three-dimensional models of the plurality of batteries and then performing thermal field analysis after the meshing to acquire temperature field analytical results of the plurality of batteries; performing fluid mechanics meshing on the three-dimensional models of fluid in the battery pack and then after the meshing, using temperature field analytical results of the plurality of batteries as constraint conditions of the plurality of batteries in the fluid grid models in the battery pack; performing fluid mechanics calculation on the constrained grid models to acquire flow field analytical results of the storage batteries; judging whether the flow field analytical results accord with preset conditions or not; and if the flow field analytical results do not accord with the preset conditions, optimizing the design scheme of the battery pack and establishing the models again. The finite element method-based storage battery thermal management analysis and optimization method is not limited to mathematic analysis capacity, has higher adaptability and solving capacity, does not need entity models, is economic and quick in the analytical process, and has higher degree of freedom and flexibility.

The invention discloses a multi-scale porous structure light weight modeling method oriented to 3D printing, and belongs to the field of computer aided design and industrial design manufacture. Undera condition that characteristic constraints and a stress condition are given, through a compact support radial basis function interpolation, a smooth multi-scale porous model is constructed; the multi-scale porous model is applied to light weight modeling, and a feasible solving solution is given; through the 3D printing, an entity experiment model is obtained and is subjected to engineering stress verification; according to engineering verification result analysis, a parameter is corrected to enable the hole change of an optimization model to more approach to practical stress requirements; and through the above loop iteration process, a light weight model which meets stress requirements is obtained. By use of the method, a light weight purpose of the entity model can be truly realized, sothat the light weight design optimization period of the model is greatly shortened, the porous structure obtained by design has the advantages of smoothness, full connectivity, controllability and quasi-self-supporting, and the effectiveness and the manufacturability of light weight can be accurately guaranteed.

A three-dimensional entity model restructuring method of the invention comprises following steps: inputting an original view of a slippy symmetrical curve surface, and mirror-reversing the original view to obtain a mirror reversing view; determining matched characteristic point pairs in the original view and the mirror reversing view; calculating a camera inner parameter matrix used by an original image; calculating an essence matrix according to the characteristic points between the original image and a mirror reversing image obtained by the inner parameter matrix and the matched characteristic point pairs, decomposing the obtained essence matrix into a rotary matrix and a translation matrix; calculating a three-dimensional coordinate of a corresponding point based on a coordinate of a two-dimensional point of the original image to generate a plane model of an object; obtaining a final slippy curve surface model by minimizing a slippy target function; extracting texture of the original image and mapping the texture on the generated slippy curve surface to obtain the three-dimensional entity model. The method of the invention can be used for restructuring the three-dimensional entity model of stacked objects and curve surfaces from a network, a digital camera or a scanner.

The invention discloses a complex fractured rock mass physical model manufactured based on 3D printing production and a modeling method. By using 3D printing, a complex fractured network model entity is reconstructed and a model suitable for an indoor analog simulation experiment is established; the complex fractured rock mass physical model comprises a discrete fracture network DFN model and an entity discrete joint network DFN model. Based on the 3D printing, the complex fractured network model entity can be reconstructed and the model suitable for the indoor analog simulation experiment is established, and an effective method can be provided for an indoor laboratory research on complex fractured rock mass mechanical behaviors. A reliable and effective method is provided for the rock mechanical test field by adopting fractured rock mass model reconstruction and fractured network entity model construction through the 3D printing; with the help of the 3D printing technology, the problems that modeling is difficult to conduct and the cost is high in the current complex fractured rock mass physical model indoor experiment can be effectively solved.

The invention relates to a micro-CT technology-based reservoir core three-dimensional entity model reconstruction method. The method includes the following steps that: a micro-CT technology is utilized to scan a reservoir core, so that a sectional scanning image of the reservoir core can be obtained, so that a CT image of a real reservoir core can be obtained, and a watershed algorithm is adopted to perform image segmentation on the CT image, so that the three-dimensional data of the image can be obtained; a Marching Cubes algorithm is adopted to generate a three-dimensional surface model of the reservoir core; and with the three-dimensional surface model of the reservoir core adopted as constraints, a constrained Delaunay tetrahedralization algorithm is utilized to generate the three-dimensional entity model of the reservoir core. According to the method of the invention, the three-dimensional entity model of the real reservoir core is established based on the sectional scanning image of the reservoir core, so that the obtained three-dimensional entity model of the reservoir core is more approximate to the structure of a real reservoir core. The method of the invention has the advantages of high accuracy and high efficiency. With the method adopted, defects of poor accuracy and low efficiency in the reconstruction of the three-dimensional entity model of a reservoir core in the prior art can be eliminated, and an effective guarantee can be provided for reservoir core simulation characteristic research.