122 results about "Design modeling" patented technology

The invention relates to the technical field of three-dimensional modeling, and discloses a real scene three-dimensional modeling method for an urban building. Aviation oblique photographic measurement and ground vehicle-mounted mobile measurement are organically combined to perform air-ground integrated extraction and processing of omni-directional spatial information so that an urban building real scene three-dimensional model can be rapidly established, the ground defect of aviation oblique photographic measurement can be compensated to the greatest extent, and the ground advantage of vehicle-mounted mobile measurement can be fully exerted.

The invention relates to a three-dimensional intelligent video monitoring method, which comprises the following specific steps of: firstly, performing three-dimensional modeling on an actual monitoring area and displaying a three-dimensional virtual scene corresponding to the actual monitoring area by using software; secondly, calibrating a camera to acquire the internal and external parameters and distortion correction parameter of the camera and establishing a two-dimensional image and three-dimensional space one-to-one mapping relational model; thirdly, intelligently analyzing a monitoring video acquired by the camera to acquire moving target information comprising a target category, a moving path and the like; fourthly, positioning target information in a two-dimensional image in a three-dimensional space and displaying the target information in the three-dimensional virtual scene in real time; and finally, storing a target two-dimensional video and the moving path in the three-dimensional space synchronously for system retrieval and playback. In the method, a two-dimensional moving target is positioned in the three-dimensional virtual scene by fully utilizing the real three-dimensional space feeling of the three-dimensional virtual scene, so that the ability of monitoring personnel of quickly positioning and processing an alarm event is improved and the workload of the monitoring personnel is effectively relieved.

The invention relates to a rod-shaped object regular three-dimensional modeling method and rod-shaped object regular three-dimensional modeling system based on density peak clustering. The rod-shaped object regular three-dimensional modeling method comprises the steps of performing voxel resampling on original point cloud data which are acquired by an on-vehicle laser radar, eliminating outliers, performing mesh segmentation on a scene point cloud, performing ground point elimination and high-rise point elimination on each grid through elevation straight-through filtering, and respectively performing projection on three coordinate planes of a three-dimensional coordinate system; respectively clustering in three projection planes on each grid in a clustering manner based on a density peak and a distance attribute; limiting the spatial range of the point clouds in a same kind by a regular spatial cubic bounding box, extracting the rod-shaped object in the spatial cubic bounding box according to priori knowledge, and obtaining a rod-shaped member characteristic parameter; and performing modeling for restoring the rod-shaped object. The rod-shaped object regular three-dimensional modeling method and the rod-shaped object regular three-dimensional modeling system can perform quick, efficient and accurate extraction on rod-shaped objects in a majority of environments and integrate with a digital city, thereby realizing fine and true modeling on the rod-shaped objects in the digital city.

A method, system and program product to model an IC design to include dimensions such as a local width and spacing of IC shapes in a consistent fashion. In particular, the invention uses a core portion of Voronoi diagrams to partition edges of a shape into intervals and assigns at least one dimension to each interval such as a local width and spacing. Dimension assignment can be made as any desirable definition set for width and spacing, e.g., numerical values or continuous dimension-dependent design rules. Design rule checking for dimension-dependent spacing rules given in any arbitrary functional form of width and spacing is possible. Application of the invention can be made anywhere the width and spacing of VLSI shapes play a role, e.g., relative to a single edge, neighboring edges, neighboring shapes, and/or for edges in more than one layer of the IC design.

The invention relates to a method for implementing a testability analysis and diagnosis decision system for electronic products and is applied to the field of electronic product design. The method comprises the following steps of: (1) arranging a testability design modeling module which comprises a graphical testability model of equipment, testability design information integration and description, and testability information acquisition and testability information storage; (2) arranging an inherent testability analysis module which comprises fault coverage analysis, fault ambiguity group discrimination, and redundancy testing analysis; and (3) arranging an actual testability analysis module which comprises diagnosis strategy generation and testability design result analysis. The invention has the advantages that: (1) the situation of deficiency of testability assisted software in China is changed, and the method is used for performing testability verification and analysis on complex electronic products; (2) each functional unit of the system can be independently used, and the system has good expandability; and (3) inherent testability analysis function and actual testability analysis function can be provided for the electronic products.

The invention discloses a decorative concrete light-transmitting plate and a manufacturing method thereof. The method comprises the following steps: step A, designing and arranging an effect modeling pattern of the concrete light-transmitting plate according to the use range and the style and selecting light transmission bodies and concrete polymer materials; step B, selecting the required light transmission body according to the designed modeling pattern and accurately positioning the light transmission body; selecting a modeling pattern designing, processing and positioning way of the light transmission body as required and accurately processing a wedge plate or a mold for positioning by using a numerical control carving machine; step C, preparing corresponding concrete polymer gel materials according to different decorative effects, pouring the uniformly-stirred concrete polymer gel materials in the mold for fixing the light transmission body to mold and finally performing demolding and post-processing. The decorative concrete light-transmitting plate not only has the physical properties of texture, grains, high strength and the like of decorative concrete, but also has the decorative effects of transparency, decorative light transmission and day-lighting of a natural stone composite light-transmitting plate, a light-transmitting stone light-transmitting plate and the like; the two kinds of effects are combined together.

The invention provides a three-dimensional modeling system and method for prefabricated parts. The three-dimensional modeling system comprises a modeling rule maintenance module, a frame model base maintenance module, a whole machine parameterization modeling module and a three-dimensional model generation engine, wherein the whole machine parameterization modeling module is used for reading and analyzing to-be-built frame models of the prefabricated parts and modeling rules of the frame models in a frame model base, instantiating the frame models according to input part types, characteristic types and parameters, and building the parts and assembly models of the prefabricated parts; and the three-dimensional model generation engine is used for generating three-dimensional models of the prefabricated parts according to the built parts and assembly models of the prefabricated parts. According to the three-dimensional modeling system and method, the modeling rules and the frame models of the prefabricated parts are separated, the modeling rules of the prefabricated parts can be added and modified conveniently, and complete machine parameterization modeling meeting different design requirements as well as the three-dimensional models of the prefabricated parts can be generated rapidly through general and customizable part bases and the modeling rules.

The invention relates to the technical field of three-dimensional scene generation, and provides a scene generation method based on indoor three-dimensional modeling and positioning. The scene generation method comprises the steps of: (1) establishing an indoor three-dimensional model; (2) deploying an indoor positioning beacon; (3) generating a robot photographing point position; (4), photographing an indoor panoramic photo; (5), and carrying out automatic patching on an indoor three-dimensional scene. The invention further provides a scene generation system based on indoor three-dimensional modeling and positioning. The scene generation method and the scene generation system have the beneficial effects of constructing indoor building three-dimensional information rapidly in a linkage manner by adopting indoor three-dimensional modeling, indoor positioning, robot, panoramic photographing technologies and the like, generating an indoor positioning point map, selecting a robot photographing point precisely based on the indoor positioning point map, ensuring the rapid and precise generation of the indoor three-dimensional scene, solving the problem that the scene reconstruction precision is not high because the photographing position is selected according to manmade judgment, ensuring the optimal positioning of the photographing position, making the generation of the indoor three-dimensional scene more efficient, being reasonable and feasible in method, and wide in application prospect.

The invention discloses a salt cavity surrounding rock geological three-dimensional modeling method under multiple feature constraints. According to the method, in a three-dimensional modeling process of a saline stratum by use of multi-source data, engineering geographical boring, triangular net digital high-elevation model, a mining area boundary, a mudstone interlayer and the like are taken as important feature constraint conditions, the three-dimensional modeling process of the saline stratum of a real geographical environment is constructed by full use of landform, geomorphy and geographical features revealed by the multi-source data; and by use of sonar detection data, a salt cavity surface three-dimensional model is constructed and is taken as an internal hole constraint, and by use of such space analysis operation as a three-dimensional space Boolean operation, grid dispersing and the like, salt cavity surrounding rock geological three-dimensional modeling is realized under the multiple feature constraints. The method provided by the invention can construct a salt cavity surrounding rock geological three-dimensional model reflecting a true three-dimensional geometric form, provides an effective calculation model for salt cavity surrounding rock creep deformation characteristic value simulation and analysis, and improves the safety of energy reservation by use of a salt cavity.

The invention relates to a one-dimensional integration heat management simulation method for an automobile engine. The one-dimensional integration heat management simulation method for the automobile engine is characterized by comprising the steps of conducting one-dimensional simulation on an engine cooling system, conducting one-dimensional simulation on an engine lubrication system, conducting one-dimensional modeling on an engine body part, conducting one-dimensional modeling on related systems or modules of the engine, and making simulation models of all the systems and parts be related for integration simulation.

The invention belongs to the electronic technology field, in particular to a hierarchical layout design modeling method of a modern FPGA software system. The invention is a layout software modeling method aiming at a modern FPGA hardware structure, and has the details that the FPGA structure is logically divided into a plurality of logic unit layers according to the types of the logic unit, such as a programmable logic block layer, a programmable input-output block layer, a block random memory layer, a bus layer and a global clock layer, etc.; then models are respectively established on each logic unit layer according to a specific geometric structure, and the layout scheme is adjusted according to the practical situation. The invention can greatly improve the running efficiency and the algorithm expansibility of the FPGA layout software in the whole FPGA CAD process through respectively carrying out the layout on each logic unit layer.

A design modelling system for operating on disparate data models in a single application is provided. The design modelling system comprises at least one source file defining a source data model, a modelling development environment module for consuming source files, and an internal generic data model transformed from the source data model in accordance with direction provided by elements of consumed source files.

The invention relates to a BIM building WEB end visual engine and a use method thereof. The engine comprises a database used for storing a BIM and associated information, a database management moduleconnected with the database and used for executing BIM design modeling according to a design modeling command and sending a created BIM to the database, an information application module connected with the database and used for modifying the BIM and the associated information and feeding back construction information according to the BIM and the associated information, and an information integration workstation connected with the database and used for viewing the BIM and the associated information and performing visual display. A relationship among a designer, an owner and a constructor is realized, so that building engineering information is continuously improved, the building construction process is clearer, design changes are greatly reduced, the material waste is reduced, and the construction efficiency is improved.

The invention discloses a simulation method of layout planning of a digital automobile plant. The method comprises the steps of carrying out three-dimensional design modeling on the digital automobile plant, carrying out systematic and visual three-dimensional simulation on relevant parts of a virtual automobile plant such as buildings, structures and pipelines based on Navisworks and Navisgator software platforms, carrying out corresponding modification and re-planning after analysis of simulation data and a simulation process, and exerting a guiding effect of the virtual digital plant on site operation. Due to relevant technologies and methods such as the three-dimensional modeling of the digital plant, interference checking and panoram view, the rationality of planning layout can be demonstrated visually and dynamically, the real-time modification and re-planning are carried, the demonstration and evaluation of the planning of the virtual plant are achieved, collisions in the planning are reduced, the design cycle is shortened, the construction risk is reduced, and an optimal solution is provided for establishing the digital plant of an automobile manufacturing enterprise.

The invention discloses a building three-dimensional modeling and virtual scene generation method and system based on a depth image. The method comprises the steps of calculating and reconstructing accurate three-dimensional depth data; Optimizing and converting the three-dimensional data of multiple types of sources to obtain a corresponding high-speed streaming point cloud format model, and carrying out point cloud registration; carrying out Projection deformation of the image, and establishing a corresponding relation between adjacent picture pixels; Connecting triangular patches formed bypoint cloud triangularization to generate a building object surface; performing Modeling by using a quadric surface and a complex polygon tool, changing the state of the quadric surface, and processing the irregular polygon to obtain a building three-dimensional model; using Three-dimensional rendering interface software to import the three-dimensional model of the building, and redrawing and displaying the model every preset time, so that the construction of the virtual environment of the building and the generation of the scene under different scenes are realized, and the good sense of reality is achieved.

The invention relates to a special-shaped mixed curtain wall based on a BIM technology. The special-shaped mixed curtain wall comprises a glass curtain wall and an aluminum board curtain wall which are arranged outside a building main body structure, a plurality of arc-shaped installing grooves are formed in a glass curtain wall framework, and glass inclined keels are formed on the edges of the arc-shaped installing grooves; the aluminum board curtain wall is composed of a plurality of arc-shaped strip-shaped aluminum board units, and the arc-shaped strip-shaped aluminum board units extend outof the surface of the glass curtain wall from the corresponding arc-shaped installation grooves to form an arc-shaped ribbon-shaped structure. After the structure is adopted, from design to construction, BIM software is adopted for design, simulation construction, division of numbers and areas of all parts and fixed-point positioning of part installation three-dimensional space, known from the above, the three-dimensional design modeling of the two-material mixed curtain wall is achieved, a BIM three-dimensional model is used for conducting curtain wall material purchasing, machining, transporting, installing and other work, sequential construction is achieved, the construction precision can be guaranteed, and the construction period can be shortened.

The invention relates to the field of three-dimensional technology and provides an overground and underground integrated modeling method based on true 3D volumetric display technique. The modeling method comprises following steps of A: using a Bigemap map interception device to intercept a remote sensing bottom diagram in a designed area on a map downloaded from a Bigemap; B: matching a daogle bottom diagram with an underground pipe network CAD measurement graph and using a MAPGIS to draw an underground pipe network vector diagram of the designated area; C: using the MAPGIS and a 3DMAX to perform three-dimensional modeling for overground facilities and underground pipe networks in the designated area; D: performing three-dimensional model integration on a GIS model and a 3DMAX model on a MAPGIS platform; and E: performing space analysis and attribute searching on the integrated three-dimensional models. The modeling method is characterized and advantaged by simple structure, easy operation, low manufacturing cost and fine and smooth models, can be widely applicable for overground and underground integrated modeling in schools, communities, industrial zones and parks, and has high market promotion and application value.

The invention relates to a hydraulic machine parameterization rapid modeling device which is used for taking use requirements of users as design objects and carrying out design and calculation to obtain and display a rapid design module for product performance, craftwork, fit dimension and other relevant parameters and also is used for leading various parameters obtained by the rapid design module into a three-dimensional solid modeling software module to generate a three-dimensional solid modeling software solid model of a hydraulic machine so as to finally obtain a connected design result processing module for the engineering drawings of the hydraulic machine. Based on the user design objects and by means of arranging the rapid design module and the design result processing module, the invention converts the obtained dimension parameters into a three-dimensional solid drawing and a two-dimensional engineering drawing of a product, thereby meeting the large-scale batched rapid design modeling requirements and saving the design time and the design cost at the same time.

The invention provides a texture data drawing method and a device in three-dimensional modeling. The method comprises the steps of obtaining the three-dimensional model built and corresponding texture files, mapping the texture files to the three-dimensional model, building a blank texture, and drawing the customizable data on the blank texture and mapping the customizable data on the texture of the three-dimensional model. For the method and device, the texture data and the customizable data are taken as two layers of data to be mapped to the altimetric data respectively, and any modification on the customizable data cannot influence the texture data, thus being very convenient in modification.

The invention provides a sugarcane sugar boiling equipment optimizing design modeling and modeling method based on the field synergy principle. The modeling comprises a subsystem analysis model, a subsystem optimization model and a system optimization model. The subsystem analysis model is used for analyzing a single physical field to form a module with certain functions; the module comprises field analysis, field coupling interface analysis, field coupling coordination variables and numerical simulation analysis. The subsystem optimization model is used for analyzing two different physical field coupling coordination in the subsystem analysis model; the target function is a minimized optimized function of the difference between coupling variables and shared variables, and constraint condition is the constraint of the system; the system optimization model is used for overall coordinating the system with a plurality of physical fields for boiling sugar coordinately, and constraint condition is consistent constraints of the coupling variables and shared variables of each subsystem. By the aid of the modeling method, structure, parameters and operating parameters of the batch-type sugar boiling equipment can be designed optimally, quantity of sugar is increased, quality of sugar is improved, sugar boiling time is shortened, and energy consumption is reduced.

The invention provides a real-time refining three-dimensional modeling and rendering method for massive road networks. The method comprises the following steps: (S1) constructing a road network three-dimensional submodel database, a model attribute database, a three-dimensional terrain model database and a three-dimensional terrain paging database; (S2) calculating a laying length, space coordinates and a space attitude of the road network three-dimensional submodel database, so as to obtain precise submodel three-dimensional preset information; (S3) presetting three-dimensional subnode models in a three-dimensional terrain model along a road network vector route according to the precise submodel three-dimensional preset information and an attribute character value of each section of road network model; (S4) regulating three-dimensional space attitude of a road network three-dimensional submodel; (S5) carrying out real-time binding on the regulated road network three-dimensional submodel to obtain massive road network models; and (S6) optimizing and rendering massive road network three-dimensional models. By virtue of the method, a professional modeling worker and a large-scale scene designer can assist to rapidly construct massive road network three-dimensional models.