123 results about "Mesh optimization" patented technology

The invention provides a news scene three-dimensional reconstruction and visualization method based on multi-source remote sensing data, and relates to the technical field of three-dimensional reconstruction, and the method comprises the steps: extracting multi-modal data feature points through employing a spatial position weighted iterative nearest point algorithm and a tensor projection algorithm; after bidirectional attention deep neural network processing and local geometric consistency constraint screening, registration multi-source remote sensing data is generated, data enhancement is carried out through a variational auto-encoder network and a generative adversarial network, the enhanced data is used for depth information generation and texture feature migration, an initial three-dimensional grid model is generated based on a Poisson reconstruction algorithm, and the initial three-dimensional grid model is constructed; and carrying out topological optimization by combining multi-view projection consistency constraint and a grid optimization algorithm to obtain an optimized three-dimensional scene model, setting a space division function, carrying out space division, constructing a grade model and a depth region, generating a scene semantic segmentation map, and updating a visual scene.

The invention provides a surface flaw analysis method combined with metal material fatigue life prediction, which comprises the following steps: carrying out grid optimization and refinement processing on an initial three-dimensional model, and carrying out refinement reconstruction on a local area to obtain a three-dimensional geometric model of the surface of a metal material, the three-dimensional geometric model comprising micro-scale surface flaw information; carrying out region division on the three-dimensional geometric model, identifying and extracting a surface defect region, carrying out edge detection on the surface defect region, and determining an accurate geometric contour and spatial position information of a defect; using finite element analysis software to import the three-dimensional geometric model and the flaw mathematical description model of the metal material, setting material attributes, boundary conditions and load conditions, and establishing a finite element analysis model containing microscopic flaws; and carrying out stress-strain analysis on the finite element analysis model of the microscopic flaws, calculating stress distribution and stress concentration coefficients around the flaws, and evaluating the influence of the flaws on fatigue crack initiation and expansion by adopting a fracture mechanics theory.

The invention discloses a three-dimensional geologic model subdivision method based on an earth space grid structure, which adopts a plurality of types of earth space grid structures including longitude and latitude grids, octahedral projection grids and Hilbert curve filling grids to carry out three-dimensional division on the earth surface, and combines a layered recursive grid division technology to obtain a three-dimensional geologic model. Multi-level grid unit generation and geometric mapping from coarse resolution to high resolution are achieved, grid parameters are dynamically adjusted according to geologic features, large-size grids are adopted in a simple area to improve efficiency, small-size grids are adopted in a complex area to capture details, redundant units are eliminated in combination with a grid optimization algorithm, and the efficiency is improved. The accuracy and the calculation efficiency of the model are improved; a global unique identifier is generated through a GeoSOT-3D hierarchical recursion technology, union set, intersection and difference set operations of grid units are completed in combination with efficient Boolean operation, and the integrity and topological consistency of geologic model subdivision are ensured.

According to the movie and television game animation point cloud three-dimensional curved surface reconstruction hole repairing method, an optimized Poisson curved surface reconstruction method is established, noise reduction processing is carried out on wrong point cloud data, abnormal points are removed, if data density is sparse, bicubic spline interpolation is adopted to improve the point cloud density, and the point cloud reconstruction efficiency is improved. Establishing a transfer low-square optimization method to accurately calculate point cloud normal vectors, adjusting the directions of the point cloud normal vectors to be consistent, improving the calculation precision of the normal vectors, and redirecting the normal vectors to ensure the consistency of the point cloud normal vectors; aiming at the fact that holes influencing a data model exist in a triangular mesh model, a triangular mesh optimization, adjustment and repair method based on a radial basis model is adopted, finally, good continuity can be kept between a repair result and a triangular mesh curved surface around the holes, good geometric consistency is kept between a repaired triangular mesh and a triangular mesh on the surface of an original model, and the repair accuracy is improved. The method is high in curved surface reconstruction speed, high in quality and suitable for being applied to multiple industries such as movie and television game cartoons.

The invention discloses a deep learning-based middle-deep layer geothermal pipe group multi-field coupling simulation method, which comprises the following steps: carrying out numerical simulation cross mutual verification to obtain a middle-deep layer buried pipe heat pump system model, and carrying out system configuration by adopting a Monte Carlo method to obtain a first parameter environment set; screening the first parameter environment set according to a parameter environment function to obtain a second parameter environment set, performing data augmentation to obtain mid-deep layer geothermal pipe group simulation data, constructing a mid-deep layer geothermal pipe group multi-field coupling deep learning model, and obtaining simulation heat exchange data and prediction coupling heat exchange data; and adaptive grid optimization is carried out to obtain an optimized grid size, and the optimized grid size is adopted to adjust the mid-deep layer buried pipe heat pump system model to output the mid-deep layer buried pipe multi-field coupling model. According to the method, accurate and rapid simulation of the multi-field coupling process of the medium-deep geothermal pipe group can be realized under complex geological conditions, and the method has important practical significance for promoting large-scale development and utilization of medium-deep geothermal resources.

The invention provides a substation equipment multi-view point cloud data fusion three-dimensional modeling method and system. The method comprises the steps of obtaining original point cloud data under multiple views and synchronously updating an equipment surface feature topological relation; setting a registration reference surface matched with the geometric structure of the equipment according to the spatial distribution characteristics of the point cloud; carrying out rigid alignment by adopting a point cloud registration algorithm based on a feature weight; and calling a curvature constraint-based three-dimensional reconstruction algorithm through the registration error parameters to generate a high-precision grid model. Wherein the registration reference plane setting needs to judge the point cloud coverage integrity and the overlapping area condition, and when the condition is not met, the collection view angle is adjusted or the point cloud data is complemented; the registration condition is judged through a curvature consistency index; the three-dimensional reconstruction process comprises voxel down-sampling, curved surface function construction and grid optimization, and the final model needs to be subjected to electrical safety verification. According to the method, high-precision three-dimensional modeling of the substation equipment can be realized, and the geometric feature reduction degree and the electrical safety verification reliability are improved.

The invention discloses a rapid local repair method for a self-intersecting triangular mesh. According to the method, local processing and rational number calculation are combined, aiming at an input low-quality triangular mesh, firstly, the mesh quality is optimized through a preprocessing step, intersection areas are positioned, then the mesh is partitioned based on octree division and connected component analysis, and the intersection areas and non-intersection areas are separated. In each intersection area, a shape-preserving boundary three-dimensional grid optimization method based on rational numbers is adopted to ensure the robustness of intersection calculation, and surface grids are extracted after successful conversion into floating-point number representation. And finally, seamlessly splicing the repaired local grid and the non-intersecting grid, and improving the overall grid quality through an edge re-gridding method based on curvature self-adaption. According to the method, the non-intersecting high-quality grid can be quickly generated, the method is suitable for downstream applications such as finite element analysis, meanwhile, the calculation overhead is remarkably reduced, and the algorithm robustness is improved.

The invention discloses a three-dimensional scanning system for the medical field, belongs to the technical field of three-dimensional scanning, and aims to solve the problems of dynamic change, low data acquisition efficiency and high post-processing complexity in the three-dimensional scanning process. The camera captures the reflection intensity and automatically adjusts the brightness and the contrast ratio of the projector; capturing a light pattern reflection image and acquiring an acquisition distance, and automatically adjusting the shutter speed of the camera and optimizing data capture after ensuring that a scanning rule is met; the reflection data are preprocessed, invalid data are filtered, the reflection data are converted into point cloud, and pose transformation, view angle combination, density equalization and outlier removal are carried out; a three-dimensional model is generated based on the processed point cloud data, and target identification and labeling are completed through grid optimization; reflection data and processing results are stored and managed, and efficient and accurate three-dimensional scanning and modeling are achieved.

The invention relates to a core particle thermal simulation finite element mesh generation method based on a neural network. The method comprises a geometric and thermal feature extraction module, a temperature distribution prediction module and an intelligent grid optimization module. The geometric and thermal feature extraction module realizes accurate prediction of chip temperature distribution through tensor construction in combination with multi-scale convolution, pyramid pooling and deformable convolution; the intelligent grid optimization module adaptively optimizes a finite element grid through coupling of thermal gradient and geometric constraint, reduces the number of grid units and improves calculation efficiency. According to the method, deep learning and finite element mesh generation are combined for the first time, a traditional iterative mesh refinement process is replaced by predicting heat distribution through a neural network, the mesh generation speed is remarkably increased, and meanwhile, the thermal simulation precision is kept within 0.8%. The method is particularly suitable for a complicated 2.5 D / 3D chip packaging structure, can effectively cope with thermal management challenges in modern integrated circuit design, and provides a rapid and accurate thermal simulation tool for chip design.

The invention provides a GPU-based parallel tetrahedral mesh optimization method, system and device and a medium, and relates to the technical field of numerical simulation. Comprising the steps of generating a triangular mesh covering a surface for a three-dimensional geometric model; generating an initial tetrahedral mesh based on the triangular mesh; performing a round of point smoothing operation on each tetrahedron by using a plurality of GPU threads; carrying out iterative circulation of the combination optimization operation, and simultaneously carrying out a round of point smoothing, edge deletion and multi-surface deletion operation on a plurality of initial tetrahedrons by utilizing a plurality of GPU threads; and when the edge deletion operation and the multi-surface deletion operation cannot further improve the grid quality, simultaneously performing a round of edge contraction and edge segmentation operation on the plurality of initial tetrahedrons by utilizing the plurality of GPU threads. According to the method, the large-scale grid with reliable quality is quickly generated based on the low-quality input grid, and the grid optimization rate is improved, so that the requirement of large-scale unstructured grid optimization in a three-dimensional space is met.

The invention provides a method and a system for reconstructing a high-precision complete shape and texture of an object in a scene. The method comprises the following steps: acquiring a visual three-dimensional grid G, optimizing the visual three-dimensional grid G, performing visual modeling of a three-dimensional scene space, and acquiring a three-dimensional grid optimization visual model; through decomposition type nerve implicit reconstruction of the generation diffusion model prior, the potential generation diffusion model prior is used for filling object missing information of an object invisible area or an occluded area, and combined scene reconstruction is carried out; optimizing a visibility model through a three-dimensional grid, dynamically adjusting the prior loss weight of a potential generation diffusion model, forming a generation prior consistent with the input in a visible region, and performing object shape enhancement; and after the object shape enhancement is completed, three-dimensional grid representation is exported from the implicit field, object texture enhancement is carried out, and a high-precision complete object 3D model with complete texture of each object is precisely reconstructed.

The invention relates to the technical field of video processing, and particularly discloses a video anti-shake processing method, a medium and equipment, and the method comprises the steps: carrying out the down-sampling of a first video frame, extracting feature points, calculating a homography transformation matrix between adjacent frames, and generating a global transformation matrix to achieve the frame alignment; generating a comprehensive grid block set covering the key area and the overall situation in combination with self-adaptive detailed grid division and uniform grid division, and marking the type of each grid block; and carrying out pixel-level fusion based on the distance weight and the type weight coefficient through a weighted fusion recombination method, and outputting a stable video frame. According to the method, through combination of global motion compensation and local grid optimization, video frame images in a violent shaking scene can be processed, picture content can be restored, stable video frame images can be obtained, monitoring picture missing is avoided, and port operation safety is guaranteed.

The invention discloses a three-dimensional model wall thickness measuring method, device and equipment combining a ray method and a spherical surface method, and a storage medium, and is applied to the field of three-dimensional models. Processing the input three-dimensional model by adopting a self-adaptive subdivision algorithm of a quadtree to generate an optimized triangular mesh; the method comprises the following steps: constructing an axial alignment bounding box (AABB) hierarchical tree structure optimized based on a superficial area heuristic (SAH) cost function, and in a wall thickness calculation stage, combining the advantages of a ray method and a spherical method: performing dynamic judgment according to an included angle between a normal vector at an intersection point of a ray and the inner surface of a model and an initial ray direction; the hybrid strategy ensures that reliable and efficient measurement results can be obtained in different geometric feature regions; a visual distribution diagram of color coding can be generated; according to the method, through adaptive grid optimization, efficient SAH-AABB acceleration and ray / spherical surface method mixed measurement, high-precision and efficient global measurement of the wall thickness of any three-dimensional model, especially a complex structure model, is realized.

The invention provides a thermal imaging automatic calibration and key region segmentation method. The method comprises the steps of obtaining a thermal imaging image, and then performing preliminary denoising processing on the image to obtain a denoised image; constructing a high-density grid in an image pixel dot matrix by adopting a dense sampling method according to the de-noised image so as to determine an initial pixel coordinate of each grid point; obtaining neighborhood feature vectors through an abnormal point set, and grouping the vectors by adopting K-means clustering so as to determine a temperature change mode, and fusing a temperature gradient to extract a boundary extraction basis as grid optimization input; and extracting a boundary extraction basis of the key part from the temperature change mode, adjusting the high-density grid according to the boundary extraction basis to obtain an optimized grid, and starting relocation iteration adjustment through coordinate deviation calculation. According to the method, a closed-loop optimization process of high-density grid construction, abnormal point identification, clustering analysis, grid dynamic optimization and iterative relocation is constructed, so that refinement and adaptive segmentation of a thermal anomaly region are realized.

The invention discloses a topological network global optimization method based on graph reinforcement learning, and relates to the field of computational geometry and grid optimizing.The method comprises the steps that a topological optimization process is modeled into a Markov decision process, a topological network containing singular points and angular points is converted into heterogeneous graph representation, and a graph state is constructed; selecting a topology editing action by a reinforcement learning agent fused with the graph neural network based on the current graph state; after executing the action, updating a topological structure and a graph state, and calculating an instant reward based on the global grid quality index change; training intelligent agents in batches through experience playback and time sequence differential learning, so that the intelligent agents learn a mapping strategy from a graph state to an optimal action; and applying the trained policy network deployment to automatic optimization of the new topology. According to the method, full-process automation of topological optimization is achieved, non-local negative effects of local modification are effectively avoided, a global optimal optimization strategy is learned, the grid quality and optimization efficiency are remarkably improved, and the method is suitable for simulation grid generation of aircrafts.

The invention discloses a structured grid optimization method and device and a storage medium, and relates to the technical field of image data processing, and the method comprises the steps: determining regular family fragments in a structured grid, calculating a spacing distance corresponding to the regular family fragments, and obtaining the optimized structured grid according to the spacing distance and a pre-stored ideal spacing distance. And optimizing the regular family fragments, determining optimized grid point coordinates, and finally updating the structured grid according to the grid point coordinates. When the spacing distance is adjusted, the spacing distance of the regular family fragments is optimized through the ideal spacing distance, the optimized grid point coordinates are obtained, and finally the structured grid is updated according to the grid point coordinates, so that the accuracy of a grid optimization mode can be improved.

The present invention relates to the field of video processing technology, and specifically discloses a video anti-shake processing method, medium, and device. The method comprises: extracting feature points by downsampling a first video frame, calculating the homography transformation matrix between adjacent frames, and generating a global transformation matrix to achieve frame alignment; combining adaptive detail grid division and uniform grid division to generate a comprehensive grid block set covering key areas and the global area, and marking the type of each grid block; performing pixel-level fusion based on distance weight and type weight coefficient through a weighted fusion and recombination method, and outputting a stable video frame. The method combines global motion compensation with local grid optimization, and can process video frame images in violent shaking scenes, restore the picture content, obtain stable video frame images, avoid missing monitoring images, and ensure the safety of port operations.

The invention provides a road data three-dimensional reconstruction method and device, a computing server, a system and a storage medium. The road data three-dimensional reconstruction method comprises an original data acquisition step, a dense point cloud acquisition step, a surface reconstruction step, a grid optimization step and a texture mapping step. Wherein the dense point cloud acquisition step comprises a binocular point cloud generation sub-step, a monocular point cloud generation sub-step and a depth map fusion sub-step. According to the invention, more real scene reconstruction is realized, the cost is reduced, and the precision is higher.

This invention discloses a fully automated, high-speed, and highly accurate three-dimensional reconstruction method and system, relating to the field of three-dimensional dynamic reconstruction. The invention introduces the construction of a spectral-point cloud fusion model and the calculation of a dynamic reflectance field by Monte Carlo ray tracing. By combining this with Fresnel's equation and dynamic ray tracing techniques, the reflectance calculation conforms to physical laws, thereby improving the accuracy of spectral mapping. Furthermore, the invention optimizes spectral data based on an error correction matrix using a spectral error compensation network, reducing the accumulation of errors caused by factors such as measurement angle and surface roughness. Moreover, in the three-dimensional reconstruction process, the invention improves the continuity and spectral consistency of the three-dimensional model by using Poisson surface reconstruction and a spectral reflectance-driven mesh optimization method based on spectrally enhanced point cloud data.

A deep transfer reinforcement learning (DTRL) method based on transfer learning within a deep reinforcement learning (DRL) framework is provided to accelerate the GoB optimization decisions when experiencing environment changes in the same source radio network agent or when being applied from a source radio network agent to a target radio network agent. The transferability of the knowledge embedded in a pre-trained neural network model as a Q-approximator is exploited, and a mechanism to transfer parameters from a source agent to a target agent is provided, where the transferability criterion is based on the similarity measure between the source and target domain.

The invention relates to the technical field of EMB brake disc visual inspection, and discloses an EMB brake disc defect detection method and system based on visual inspection, and the method comprises the steps: obtaining a complete image set containing a plurality of visual angles, and carrying out the space alignment and feature extraction, and obtaining a surface feature data set; performing interpolation complementation on the surface feature data set, and performing defect detection and space construction on the complemented data set to obtain a space information model; according to the spatial information model, generating point cloud data of the surface of the brake disc, and performing grid optimization to obtain an optimized point cloud grid data set; performing texture mapping and defect analysis on the optimized point cloud grid data set to obtain defect position data; according to the defect position data and the three-dimensional distribution view, depth information of the defect area is extracted, and defect form description data is obtained. According to the method, the multi-angle defect detection precision of the complex curved surface can be improved, so that the surface defects of the brake disc can be comprehensively and accurately detected at multiple angles and multiple dimensions.

In order to solve the problems of high calculation complexity and low efficiency in hydraulic fracturing numerical simulation, the invention provides a method for parallel simulation of hydraulic fracturing crack propagation. A three-dimensional fracture grid is constructed by adopting a displacement discontinuity method (DDM) and a finite volume method (FVM), and stress and fluid pressure distribution in fractures are calculated. Crack expansion is driven by optimizing DDM stress coefficient matrix generation and combining FVM to calculate crack tip pressure. OpenMP multi-thread scheduling and Intel MKL and Eigen library optimization are adopted, LU or QR decomposition is dynamically selected according to the matrix scale, and therefore the calculation efficiency is improved. According to the method, by initializing a three-dimensional fracture grid, optimizing a stress matrix, constructing a fluid-solid coupling equation set, carrying out iterative solution, checking convergence and generating a three-dimensional fracture expansion model, efficient fracture expansion simulation is achieved, and an efficient and accurate numerical tool is provided for fracture design of unconventional oil and gas reservoirs.

The invention discloses a NeRF multi-model scene construction method and device based on distorted light, and a medium, and the method comprises the following steps: obtaining a training data set, carrying out the preprocessing of the data set, and calculating the pose of an image; constructing a GPU environment, setting training parameters, and loading a scene configuration file and a two-dimensional image with a camera pose; optimizing a neural radiation field stratified sampling strategy by using a density voxel grid, efficiently training a spherical harmonic neural radiation field (NeRF-SH) model, and recording network output by using a hash table; combining and rendering the plurality of neural radiation field models by using a light distortion method to obtain a combined scene image; models are increased or decreased, various parameters are adjusted, and scene construction is achieved through rendering. According to the method, the stratified sampling strategy in the neural radiation field is optimized, the neural radiation field is baked into the hash table, the training and rendering efficiency of the neural radiation field is remarkably improved, multiple models are combined by twisting light and combining the maximum combination strategy, and construction and editing of a scene are achieved.

The invention relates to the technical field of power systems, in particular to a 500kV power cable finite element modeling and conductor temperature simulation method. Comprising the steps that firstly, finite element software is used for producing a 500kV power cable geometric model according to data information; secondly, setting corresponding environment boundary conditions and electromagnetic boundary conditions according to different cable laying environments; for a buried type, a multi-layer soil model is established; according to the model, heat convection boundaries and heat conduction boundaries can be set for different sublayer soil models, so that buried boundary conditions are formed; for an overhead type, environment data of different overhead heights are collected and analyzed, and overhead type boundary conditions are set through radiation influence and heat conduction effect; electromagnetic boundary conditions realize setting of an electric field and a magnetic field according to a cable contact medium; and finally, carrying out grid optimization on the key area of the cable through a grid optimization method. According to the method, accurate simulation of the conductor temperature is realized.

The invention provides a hyperbolic variable cross-section construction process optimization method, and belongs to the technical field of building construction.The method includes the steps that precise geometric data of a hyperbolic variable cross-section structure is obtained to establish a geometric parameter matrix, and a high-precision finite element analysis model is established through a self-adaptive mesh refinement algorithm; establishing a double-layer game grid optimization model to realize coordination and balance of calculation precision and efficiency, establishing a prestressed tendon three-dimensional path planning model, optimizing a spatial arrangement path of the prestressed tendon in a hyperboloid by adopting a genetic algorithm, accurately calculating a curvature radius and a friction loss coefficient of the prestressed tendon, and adjusting arrangement parameters according to a prestress loss rate. And a real-time monitoring system is established to dynamically adjust construction parameters, and the technical problem of low prestress transmission efficiency caused by complex spatial path planning of the prestressed tendons in the construction process of the hyperbolic variable cross-section structure is solved.

The invention discloses a grid optimization generation method and device of a one-dimensional and two-dimensional coupling hydrodynamic model, a medium and a product, and relates to the field of data processing.The method comprises the steps that after a grid river network digital elevation model is generated based on original terrain data, a river channel center line and boundary lines of the two banks of a river channel are determined; a hydrodynamic simulation system is used for obtaining an unstructured grid unit information file based on a riverway center line and riverway two-bank boundary lines, a coupling point processing module is written through a python language, and unstructured grid unit information is received and preprocessed; and a python script is operated, a cross product function and a straddling condition are utilized, the verification model is calibrated based on the preprocessed unstructured grid unit information, and grid optimization of the one-two-dimensional coupling hydrodynamic model is completed. According to the method and the device, the grid optimization of the one-two-dimensional coupled hydrodynamic model can be completed under the condition of not depending on third-party hydrodynamic modeling software, so that the accuracy of generating the coupling point of the one-two-dimensional coupled hydrodynamic model and the grid optimization generation speed are improved.

The invention discloses a vehicle body grid parameter dynamic optimization method and system based on model simulation, and belongs to the crossing field of computer-aided engineering and artificial intelligence technology. According to an existing vehicle body grid optimization scheme, deep mining and analysis of grid data cannot be achieved, and consequently the accuracy and reliability of a grid optimization result are not high. According to the vehicle body grid parameter dynamic optimization method based on model simulation, a vehicle body historical database module, a vehicle body grid optimization module and a domain knowledge base module are utilized to match vehicle body grid data to be optimized with vehicle body historical data to obtain the most similar vehicle body historical data; the information is used as experience information and verification basis of vehicle body grid parameter optimization; and then experience information and a verification basis are reused, the to-be-optimized grid data of the vehicle body are analyzed and processed, and optimization suggestion information is generated, so that historical data can be deeply mined and analyzed, and the accuracy and reliability of a grid optimization result can be effectively improved.

According to the power transmission line terrain fusion method and system, the storage medium and the computer equipment provided by the invention, when the power transmission line terrain is fused, the point cloud data of the point cloud channel terrain and the digital elevation model data of the basic terrain are firstly obtained, and the overlapping region of the two kinds of data is divided into the plurality of initial grids, so that the spatial consistency is ensured; then data quality information and topographic information of each initial grid are determined based on the two kinds of data and then comprehensive analysis is carried out to analyze fusion performance of different data, a data evaluation model is constructed and obtained, the model is utilized to carry out ICP algorithm applicability evaluation on each initial grid, a local optimal solution is prevented from being trapped in processing of a complex topography, and the reliability of the data evaluation model is improved. And finally, performing grid optimization on the power transmission line by adopting a particle swarm optimization algorithm according to an evaluation result, thereby realizing data combination of the point cloud channel terrain and the basic terrain of the power transmission line, enabling the point cloud channel terrain and the basic terrain to adapt to different terrain features, and further improving a matching effect and analysis efficiency.

The invention relates to the technical field of finite element optimization, in particular to a performance optimization method and system based on finite elements, and the method comprises the steps: obtaining a finite element model of a gear in a transplanting mechanism of a rice transplanter, and dividing the finite element model into a plurality of grids; corresponding loads are applied to the finite element model according to simulation data of gears when the rice transplanter works, simulation indexes of all the grids are obtained, the grid sizes of all the grids are optimized based on the simulation indexes, and optimized target grids are output; determining a performance index of each target grid, optimizing design parameters of the target grids according to the performance indexes, and updating the finite element model based on the optimized design parameters to serve as a final finite element model of the gear; according to the method, through deep coupling of grid optimization and parameter optimization, the analysis precision and optimization efficiency of the gear can be improved.

The invention discloses a multi-model collaborative two-dimensional Gaussian splash three-dimensional reconstruction method, which comprises the following steps: acquiring a multi-view RGB image, outputting camera parameters and sparse point clouds by using a VGGT model, and generating a depth image and a mask image through a monocular depth estimation network and an image segmentation network; carrying out densification processing by utilizing a visual shell algorithm; initializing a two-dimensional Gaussian primitive by using the dense point cloud; carrying out training on the initialized two-dimensional Gaussian primitives; re-rendering depth maps of all visual angles, and generating a three-dimensional grid through a truncated symbol distance function and a contour surface extraction algorithm; performing grid optimization based on local bilateral filtering on the three-dimensional grid to obtain a smooth grid; and carrying out scale correction and smoothing the grid to obtain a three-dimensional model with a real scale. According to the method, an omnibearing three-dimensional model with high-fidelity geometry, real scale and new view rendering capability is generated through a multi-model collaborative initialization and optimization strategy.