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100 results about "Rendering (computer graphics)" patented technology

Rendering or image synthesis is the automatic process of generating a photorealistic or non-photorealistic image from a 2D or 3D model (or models in what collectively could be called a scene file) by means of computer programs. Also, the results of displaying such a model can be called a render. A scene file contains objects in a strictly defined language or data structure; it would contain geometry, viewpoint, texture, lighting, and shading information as a description of the virtual scene. The data contained in the scene file is then passed to a rendering program to be processed and output to a digital image or raster graphics image file. The term "rendering" may be by analogy with an "artist's rendering" of a scene.

General nerve drawing method and system based on illumination function generation model

The invention discloses a general nerve drawing method and system based on an illumination function generation model, and belongs to the technical field of computer graphics, and the method comprises the steps: collecting light source information containing multi-view observation data, and collecting scene information; constructing an illumination function generation model comprising a light source coding module and a light source decoding module for converting the light source information into neural illumination representation and performing joint inference based on the neural illumination representation and scene features of the drawing points; and generating a final drawn image conforming to the real illumination distribution based on the inference result. According to the method, generalization neural drawing across light sources and scenes can be achieved, images with off-line rendering quality can be generated at the cost close to real-time calculation, the sense of reality, stability and rendering efficiency are considered, and the method has good expansibility and wide application value.
Owner:ZHEJIANG UNIV

Metacosm social space generation method and system

The invention relates to the technical field of computer graphics and virtual reality, and discloses a meta-universe social space generation method and system. The method comprises the following steps: acquiring multi-modal input data of a user and constructing an intention vector; extracting social relation characteristics based on the intention vector, and generating a multi-dimensional scene constraint condition; generating a three-dimensional virtual environment and optimizing a topological structure by adopting a generative adversarial network according to a scene constraint condition; and fusing the scene data with the user social behavior data, and outputting a multi-terminal interactive rendering result. The system comprises a data acquisition and intention modeling module, a scene constraint mapping and environment generation module and a fusion rendering and interactive output module. According to the invention, multi-user immersive social space interaction can be realized on the VR head-mounted display, the AR glasses and the mobile terminal, and the method has the advantages of low delay, high simulation degree and cross-platform synchronization.
Owner:SHANGHAI AIKEBO INFORMATION TECH CO LTD +1

Dynamic rendering method and system of virtual reality, storage medium and electronic equipment

The invention discloses a dynamic rendering method and system for virtual reality, a storage medium and electronic equipment, and relates to the technical field of virtual reality, augmented reality and computer graphics. Therefore, the frequency and time sequence change of the sight focus of the user hitting the surface of the virtual object in the virtual scene are analyzed, so that the relative motion trend and observation intention of the user and the object are pre-judged, predictive and adaptive scheduling of rendering resources is realized, and optical feedback conforming to the physical law, namely, dynamic material, is triggered at the sight focus, so that the real-time performance of the user is improved. Therefore, the interaction fineness in the process of interaction between the user and the VR system is improved.
Owner:HUNAN HAPPLY SUNSHINE INTERACTIVE ENTERTAINMENT MEDIA CO LTD

Automatic logistics digital twinning model adaptive precision rendering method and system

The invention discloses an automatic logistics digital twinning model adaptive precision rendering method and system, and relates to the technical field of computer graphics and automatic logistics digital twinning crossing, in particular to a rendering optimization scheme capable of dynamically adjusting model rendering precision for a large-scale smart factory scene in a Unity engine. Through a dynamic decision-making mechanism based on a use scene and a service factor, in combination with a current use scene, a model with a high service priority in the scene is subjected to refined rendering, and a model with a low current weight in the scene is subjected to simple rendering, so that it is ensured that under each specific scene, the service quality of the scene is improved. And the system can intelligently and accurately guide the computing resources to the object which most needs high-fidelity rendering.
Owner:KUNMING KSEC LOGISTIC INFORMATION IND

3D Gaussian splash rendering optimization method in VR based on Unity engine

The invention discloses a 3D Gaussian splash rendering optimization method based on a Unity engine in VR, and relates to the technical field of computer graphics. PLY point cloud files are converted into SOG high-compression formats containing multi-level LOD information, after low-transparency Gaussian points are removed, Morton coding sorting is carried out on the center coordinates of the Gaussian points, and then the 3D Gaussian splash rendering optimization method based on the Unity engine in VR is realized. The method comprises the following steps: constructing an octree spatial index containing a spatial bounding box and multiple LOD data, removing Gaussian points in a grading manner according to a camera distance, selecting an LOD hierarchy, carrying out deep barrel sorting on visible Gaussian points, executing drawing by taking a barrel as a unit, and combining near-to-far sorting, an improved mixed equation and screen space edge removal and amplification operation to obtain a target image. According to the method, through multi-dimensional optimization such as loading, space elimination and rendering, the loading efficiency of the VR equipment is improved, the rendering burden is reduced, Tile-Based hardware is adapted, and smooth operation of 3D Gaussian splashing on the VR all-in-one machine is realized.
Owner:YUANMENG SPACE DIGITAL TECHNOLOGY (CHENGDU) CO LTD

Furniture material dynamic rendering system based on physical simulation

The invention belongs to the technical field of crossing of computer graphics and physical simulation, and discloses a furniture material dynamic rendering system based on physical simulation. Comprising a furniture modeling module used for constructing initial scene data of furniture to be analyzed; the physical simulation module is used for constructing a structure physical simulation model of the to-be-analyzed furniture based on the initial scene data and executing simulation to obtain structure response data of each structure position of the to-be-analyzed furniture; the multi-field generation module is used for mapping the structure response data into a three-dimensional geometric model of furniture to be analyzed to form a surface risk field, generating a joint priority field in combination with scene visibility data, and determining a grid reconstruction weight field based on the structure response data and the surface risk field; the texture generation module is used for acquiring physical driving texture data; and the rendering and feedback module is used for carrying out material coloring strategy distribution and outputting a current frame of furniture material dynamic rendering image so as to realize optimal distribution of rendering quality.
Owner:SHANGHAI JIANGFENG FURNITURE CO LTD

Frame generation method and system adopting predictive sparse rendering

The invention discloses a frame generation method and system adopting predictive sparse rendering, and belongs to the technical field of computer graphics, and the method comprises the steps: obtaining historical frame rendering data, current frame geometric rendering data and current frame sparse rendering data in a graphic rendering pipeline, and extracting a multi-scale feature pyramid through different encoders; receiving and fusing the multi-scale feature pyramids through a unified decoder, and generating a frame synthesis residual error, an extrapolation error score and a time sequence mixed weight through multi-stage up-sampling; performing time sequence synthesis by using the time sequence mixed weight and fusing the frame synthesis residual error to obtain a final rendering result of the current frame, and updating the final rendering result into historical frame rendering data of the next frame; and obtaining a next-frame sparse rendering mask by using the extrapolation error score and optical flow prediction, and generating next-frame sparse rendering data from the next-frame sparse rendering mask through tile-level sparse rendering. According to the method, the frame generation quality and the time stability can be remarkably improved under the condition of low rendering budget.
Owner:ZHEJIANG UNIV

Virtual reality level simulation method based on material point method and gridding surface reconstruction

The invention discloses a virtual reality level simulation method based on a material point method and gridding surface reconstruction, and belongs to the crossing field of computer graphics, physical simulation and virtual reality technologies. The method comprises the following steps: S1, classifying and storing position coordinates of material points according to material numbers of the material points, and traversing the coordinates to obtain a boundary of a bounding box of the material points; s2, selecting a grid size and a boundary extension distance for reconstructing the surface in a self-defined manner, and generating a grid; s3, selecting a Gaussian function to calculate the contribution of each substance point to the overall substance point density field, and obtaining parameters; s4, calculating the contribution of each substance point to the overall substance point density field, and performing accumulation to obtain the overall substance point density field; and S5, obtaining a contour surface of the overall material point density field, and exporting the contour surface as a rendering engine general three-dimensional model to obtain a simulation visual effect. According to the method, the problems that in the prior art, tens of millions of substance points cannot be processed, reconstruction parameters are difficult to select, and connection with a high-end rendering engine is not smooth can be solved, and the virtual reality level simulation visual effect is achieved.
Owner:DALIAN UNIV OF TECH

Three-dimensional digital garment stylization method and device

The invention relates to the technical field of crossing of computer vision, computer graphics and digital fashion, and discloses a three-dimensional digital clothing stylization method, which comprises the following steps of: firstly, constructing a double-encoder color mapping network to realize color alignment of a clothing image and a style image; the problem that training data is difficult to obtain is solved through a self-supervision strategy; then extracting depth features of the multi-view garment image and the style image by using a pre-trained VGG network, and embedding the style features into a garment feature space by means of an edge enhancement nearest neighbor feature matching algorithm; secondly, introducing an attention-guided edge enhancement feature extraction network, extracting edge features, and performing alignment optimization; finally, a stylized three-dimensional digital clothing image which has high style fidelity and clear structure details and supports rendering at any viewing angle is generated, the problems of color distortion, fuzzy details, inconsistent styles and the like in the prior art are effectively solved, and the method is suitable for the fields of virtual fitting, digital fashion design and the like.
Owner:ZHEJIANG SCI-TECH UNIV +1

A 3D Spatial Domain and Time-Slice Driven Dynamic Outer Contour Mesh Hot-Plugging Method

This invention relates to the field of computer graphics data processing technology, specifically a method for hot-plugging dynamic outer contour meshes driven by three-dimensional spatial domain and time slices. The steps include: S1, receiving air traffic control message information in real time via a transmission protocol, converting geographic coordinates into target world coordinates, and simultaneously generating management files; S2, constructing a spatial domain mesh in real time based on the four types of management files using a combination of outer contour extrusion and ear-cutting methods; S3, mapping the spatial domain ID and time slice from the message to the spatial domain mesh constructed in S2, constructing a double-key hash index of spatial domain ID and time slice, which serves as the sole basis for the hot-plug manager to determine whether to update or create a mesh, dynamically executing spatial domain mesh hot-plugging. Employing the contour extrusion-ear-cutting method and vertex cache reuse mechanism, combined with the "spatial domain ID and time slice" double-key hash index, it supports dynamic construction and hot-plugging operations of the mesh model, meeting the low-latency rendering requirements of real-time air traffic control data.
Owner:HANGZHOU DEEPIN ZHILIAN DIGITAL TECH CO LTD

Digital human-oriented four-dimensional virtual fitting method and system

The invention belongs to the technical field of computer vision and computer graphics, and discloses a digital human-oriented four-dimensional virtual fitting method and system. The method comprises the steps of obtaining a source figure image sequence and a target clothing image; a parallel double-branch structure is adopted to generate a first Gaussian mapping and a second Gaussian mapping irrelevant to view angles and postures under the standard postures; generating a Gaussian parameter offset according to the driving attitude and the visual angle through a shared nonlinear deformation module, and superposing the Gaussian parameter offset to Gaussian mapping; performing time sequence consistency correction on the two-dimensional virtual fitting sequence to obtain a correction supervision signal; and generating a four-dimensional virtual fitting result through micro rendering based on the correction supervision signal and the Gaussian mapping after superposition offset. Compared with the prior art, the method has the advantages that the multi-view consistency, the dynamic continuity, the rendering quality, the generation speed and the like are obviously superior, high-fidelity dynamic virtual fitting is realized, and advanced performance is achieved in the aspects of visual perception indexes, physical stability, cross-garment generalization ability and the like.
Owner:OCEAN UNIV OF CHINA

End-to-end field optimization object surface reconstruction method based on Gaussian sputtering guidance

The invention discloses an end-to-end field optimization surface reconstruction method based on Gaussian sputtering guidance, and belongs to the field of computer vision and computer graphics. Comprising the following steps: 1) Gaussian guidance field optimization: defining an implicit symbol distance field by using a parameterized MLP network, and initializing and optimizing a surface through a microcosmic contour surface extraction method; gaussian units are bound with the extracted surface triangular patches, the positions of the patches are parameterized through the vertexes of the patches, rotation and scaling are carried out, regularization constraints based on the minimum wrapped ellipse and the distribution entropy are introduced, it is ensured that the Gaussian units are accurately attached to the surface and evenly distributed on the surface, and a result obtained through rendering guides field optimization. And 2) local multi-resolution: identifying surface voxels based on the optimized symbol distance field to carry out adaptive octree subdivision so as to realize multi-resolution improvement. And 3) adopting an inner and outer double-layer cyclic training architecture, optimizing the symbolic distance field and the grid geometric parameters on the outer layer, and optimizing a bound Gaussian unit on the inner layer to realize end-to-end joint optimization of surface geometry and Gaussian rendering.
Owner:DALIAN UNIV OF TECH

Light tracking rendering method of stylized character, electronic equipment and storage medium

The embodiment of the invention provides a light tracking rendering method of a stylized character, electronic equipment and a storage medium, and belongs to the technical field of computer graphic processing. The method comprises the following steps: acquiring a camera sight line vector, and a surface normal and geometric rendering information corresponding to a target virtual character; normal deviation processing is carried out on the surface normal of the target virtual character and the camera sight line vector, and a smooth normal of the corresponding target virtual character is obtained; performing ray tracing sampling based on a smooth normal, and generating basic illumination information corresponding to the target virtual character; performing light tracking effect adjustment based on the basic illumination information and the geometric rendering information of the target virtual character to obtain improved illumination information; and rendering the target virtual character based on the improved illumination information. According to the embodiment of the invention, on the premise of keeping a cartoon rendering style, the global illumination effect of ray tracing is integrated into role rendering, so that the role can be seamlessly integrated with the global illumination of the environment.
Owner:GUANGZHOU KULUO SHUJIE TECH CO LTD

Global nerve drawing method and system based on programmable rasterization engine

The invention discloses a global nerve drawing method and system based on a programmable rasterization engine, and belongs to the technical field of computer graphics, and the method comprises the steps: at the programmable rasterization engine, analyzing a rasterization descriptor according to a rasterization instruction, and extracting vector microoperation and control parameters; maintaining a task state machine according to the parameters and distributing a control signal, selecting an execution entry from a vector kernel table according to the control signal, and instantiating an operation into a parallel vector thread; in a vector thread execution process, tracking data dependence of a vector register and a synchronization state of a direct memory access unit, executing vector loading / storage operation so as to carry data between the register and an on-chip shared memory according to the data dependence and the synchronization state, and dynamically scheduling vector micro-operation to an execution component so as to complete rasterization calculation; and outputting a result to the neural rendering network to complete global neural rendering. According to the method, the multi-representation neural rendering load can be uniformly and efficiently supported on the AI accelerator, the memory access overhead is remarkably reduced, and the calculation efficiency is improved.
Owner:ZHEJIANG UNIV

A method for weakening three-dimensional local terrain protrusions based on WebGL

ActiveCN121095496BReducing the problem of steep terrainStrong reliabilityTerrainGraphics
The application relates to a WebGL-based three-dimensional local terrain protrusion weakening method, and belongs to the technical field of computer graphics visualization, which comprises terrain grid loading, loading terrain data in the form of a grid into a scene in a WebGL rendering engine, storing information in the form of a.terrain format binary file, then performing grid analysis, loading block terrain data according to a terrain level of detail strategy, analyzing terrain data, loading and analyzing downloaded binary file data according to terrain grid levels and row and column numbers, compressing the data by using a zig-zag coding method, then performing vertex height dynamic adjustment, and finally performing terrain triangular net reconstruction. The WebGL-based three-dimensional local terrain protrusion weakening method can weaken terrain protrusion problems by modifying the vertex elevation of a terrain data-free area, does not cause distortion of local high-precision terrain and models in a scene, can weaken terrain cliff problems existing in three-dimensional local terrain protrusions, and does not deform the terrain and models in the scene.
Owner:WUHAN GUO YAO XIN TIAN DI INFORMATION TECH CO LTD

A tile production real-time monitoring and integrity checking system

The application provides a tile production real-time monitoring and integrity checking system, belonging to the technical field of geographic information systems and computer graphics processing, comprising a production task registration module, a tile integrity detection module, a message communication module and a browser rendering module; the production task registration module is used for collecting, analyzing and storing tile production task information; the tile integrity detection module is used for checking the integrity of tile data; the message communication module is used for pushing the tile production task state and the checking result from the server end to the browser end in real time; and the browser rendering module generates a tile production progress monitoring multi-dimensional view and a tile data health degree analysis view according to the received tile production task state and tile integrity checking result. The application proposes a tile production monitoring system integrating multi-thread scheduling, asynchronous message communication and rendering technology, and realizes full-link optimization of the tile production progress.
Owner:AEROSPACE INFORMATION RES INST CAS

A dynamic hierarchical rendering method, system and application for ultra-large scale graph data

The application belongs to the technical field of computer graphics and big data visualization, and discloses a dynamic hierarchical rendering method, system and application for super-large graph data.The rendering method comprises a dynamic graph layering mechanism based on structural entropy, a super-aggregated node-subgraph rendering architecture and a polymorphic coordination layout calculation strategy.The application solves the challenges existing in rendering large-scale data volume graphs by conventional means, i.e., browser memory overflow caused by direct rendering of million-level nodes at a time and resource waste caused by repeated rendering due to the absence of a cache mechanism, and provides a solution for large-scale data visualization rendering.
Owner:SHENZHEN WANGLIAN ANRUI NETWORK TECH CO LTD

Data display method and device and electronic equipment

The embodiment of the invention provides a data display method and device and electronic equipment, and belongs to the technical field of computers. The method comprises the following steps: receiving a target rendering task for a target simulation post-processing file; determining a target data backup file corresponding to the target rendering task based on a set association relationship; the set association relationship comprises a plurality of rendering tasks and a data backup file associated with each rendering task; each data backup file is obtained by loading data of the target simulation post-processing file based on a specified organization form; and performing data display on the target data backup file according to the target rendering task. The embodiment of the invention is used for solving the defect that obvious lagging occurs during computer graphic rendering and drawing due to the fact that only one set of simulation post-processing files are operated when different data operation requirements are processed in the existing method.
Owner:BEIJING SMARTCHIP MICROELECTRONICS TECHNOLOGY CO LTD

Self-adaptive viewpoint rendering method for fixed display space

The invention provides a self-adaptive viewpoint rendering method for a fixed display space, and belongs to the technical field of computer graphics and virtual reality. The method comprises the following steps: S1, performing hardware deployment and system preprocessing operation; s2, acquiring viewpoint position data of two eyes of an observer in the space in real time; s3, generating perspective image data corresponding to the display screen; s4, carrying out self-adaptive rendering image generation operation; and S5, synchronously outputting the display picture and dynamically updating the display picture. The method has the beneficial effects that radar and camera dual data sources and dual-confidence judgment can effectively cope with various complex scenes, and the accuracy under severe working conditions is ensured; weight correction can improve the adaptation degree of fusion data in different scenes; and due to the introduction of the resolution sensitivity coefficient, the resource investment can be reduced in a low-attention area, the cost is reduced, and the efficiency is improved.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD

A city digital twin scene static LOD processing method and device and a storage medium

ActiveCN121999182BReduced modelEngineering
To address the problems of semantic structure destruction, geometric feature distortion, and difficulty in controlling multi-level errors in the LOD simplification process of existing 3D models, this application discloses a static LOD processing method, device, and storage medium for urban digital twin scenes, belonging to the field of computer graphics and 3D modeling technology. The method includes: semantic recognition and region division of the urban building 3D mesh model to construct a semantically labeled mesh; establishing a simplification control model based on the semantically labeled mesh and determining simplification constraints; performing mesh simplification processing under constraints; preserving geometric features of the simplification results; evaluating errors in each LOD level model and performing adaptive correction; and replacing semantic components that cannot be preserved to generate multi-level LOD model data. This application reduces model complexity while achieving the coordinated preservation of semantic consistency and geometric accuracy, making it suitable for efficient rendering and visualization applications of urban-level 3D scenes.
Owner:云南省地图院

Three-dimensional model rendering method and device, equipment and storage medium

A rendering method, device and equipment of a three-dimensional model and a storage medium, relate to the technical field of computer graphics. The method comprises: obtaining vertex data sets and index data sets of at least two three-dimensional models in a three-dimensional model sequence, the vertex data set of a three-dimensional model being used to describe at least one vertex of the three-dimensional model, and the index data set of the three-dimensional model being used to indicate a connection relationship between at least one vertex of the three-dimensional model by means of vertex index; sequentially splicing the vertex data sets of the at least two three-dimensional models to obtain combined vertex data, and sequentially splicing the index data sets of the at least two three-dimensional models to obtain combined index data; and rendering the at least two three-dimensional models based on the combined vertex data and the combined index data. The application only needs one pair of vertex buffer and index buffer, so as to realize the storage of the combined vertex data and the combined index data without multiple pairs of buffers, thereby being conducive to reducing the demand for buffers.
Owner:SHENZHEN TENCENT NETWORK INFORMATION TECH CO LTD

Pixelization effect rendering method and device, equipment, medium and program product

The invention relates to the technical field of computer graphics, and provides a pixelated effect rendering method, device and equipment, a medium and a program product, the pixelated effect rendering method comprises the steps of obtaining first texture coordinate data corresponding to a target texture on the surface of a virtual object; performing discretization processing on the first texture coordinate data to obtain second texture coordinate data distributed in a stepped manner; disturbance data are obtained, the disturbance data are used for representing noise offset aiming at the second texture coordinate data, offset operation is carried out on the second texture coordinate data through the disturbance data, and third texture coordinate data are obtained; and finally, sampling the target texture according to the third texture coordinate data, and generating a rendering result with dynamic pixelated visual features. According to the scheme, pixelation and dynamic disturbance of texture sampling can be realized, and the artistic expressive force of rendering is improved.
Owner:NETEASE (HANGZHOU) NETWORK CO LTD

Rendering methods, devices, equipment, and storage media for 3D models

PendingCN122089904AAutomate renderingImprove lighting effect rendering efficiency3D-image renderingThree-dimensional spaceVirtual camera
A rendering method, apparatus, device, and storage medium for a 3D model are disclosed, relating to the field of computer graphics technology. The method includes: acquiring vertex position data of a 3D model, wherein the vertex position data indicates a first position of at least one vertex of the 3D model in 3D space; projecting at least one vertex from 3D space to screen space according to camera parameters of a virtual camera in 3D space, obtaining projection point position data, wherein the projection point position data indicates a second position of the corresponding projection point of at least one vertex in screen space; predicting projection point color data corresponding to a preset lighting effect of the 3D model in 3D space using a light gradient model based on the projection point position data and camera parameters; and rendering the 3D model using the projection point position data and projection point color data to obtain a rendered image of the model. This application enables automatic rendering of lighting effects of 3D models, improving the rendering efficiency of lighting effects.
Owner:TENCENT DIGITAL (SHENZHEN) CO LTD

A reconfigurable intelligent surface assisted wireless environment modeling method based on three-dimensional gaussian spatter technology

ActiveCN121357556Breduce complexityLightweight modelingAlgorithmComputer graphics
The application discloses a kind of reconfigurable intelligent surface auxiliary wireless environment modeling method based on three-dimensional Gaussian splash technology, belong to wireless communication field, this method will three-dimensional Gaussian splash technology from computer graphics field innovatively migrate to RIS auxiliary wireless communication system modeling field, the explicit parameterization thought of 3D-GS is applied to radio frequency electromagnetic field modeling, break through the limitation of traditional deep learning "black box" modeling;Adopt two-stage joint modeling framework: for the characteristics of RIS system, "TX→RIS" and "RIS→RX" cascade modeling strategy is designed, can accurately capture the electromagnetic regulation effect of RIS;With explicit physical parameterization: replace large-scale neural network weight with Gaussian parameter with clear physical meaning, realize light weight;In addition, by constructing complete differentiable rendering process, support efficient gradient descent optimization, ensure training efficiency and convergence.
Owner:HUAZHONG UNIV OF SCI & TECH

A high-fidelity bill data generation method, system and storage device based on browser kernel dynamic rendering and double-pipeline physical simulation

PendingCN122336773AData streamComputer graphics
This invention discloses a method, system, and storage device for generating high-fidelity invoice data based on browser kernel dynamic rendering and dual-pipeline physical simulation, belonging to the field of artificial intelligence and big data processing technology. It includes: constructing a metadata generation engine to generate an invoice text data stream; constructing an HTML invoice template, injecting the invoice text data stream into the template, and dynamically rendering to generate a high-resolution invoice bitmap; obtaining the original coordinate set of the rendering layer; correcting the original coordinate set using a compact bounding box to obtain pixel-level precision labeled coordinate data; enhancing the invoice bitmap and the corrected labeled coordinate data to generate a physically simulated invoice image; and serializing and outputting the invoice image and a heterogeneous labeled file containing the corrected labeled coordinate data. This invention utilizes a browser rendering engine to generate structured documents and simulates real physical environment interference through computer graphics algorithms, thereby generating data for training an intelligent document processing model.
Owner:BEIJING YIDAO BOSHI TECH

Defect detection method and system based on graphic illumination model and normal color rendering, computer readable storage medium and computer program product

The invention relates to the technical field of image processing, and discloses a defect detection method and system based on a graphic illumination model and normal color rendering, a computer readable storage medium and a computer program product. The method comprises the following steps: constructing a three-dimensional point cloud based on a depth map of an object surface; calculating a surface normal vector of each point in the point cloud to obtain a normal vector array of the point cloud; performing texture-free LUT color rendering on the normal vector array of the point cloud, and performing color fusion by fusing a Phong illumination model to obtain an image after illumination texture enhancement; and mapping the image after illumination texture enhancement back to a two-dimensional plane to generate a 2D effect picture for defect detection. According to the method, the Phong illumination model and the LUT color rendering technology in computer graphics are introduced, so that the visual features of the defect area are greatly enhanced, and the recognition accuracy and adaptability of a target detection algorithm to various surface defects are improved.
Owner:GUANGDONG AOPUTE TECH CO LTD

Vector field dynamic display method and device, electronic equipment and storage medium

The present application relates to the technical field of computer graphics rendering, and particularly relates to a vector field dynamic display method and device, electronic equipment and storage medium, the embodiment of the present application obtains a plurality of data sets with large time intervals, constructs an accumulation matrix through vector data, matches position data in two adjacent data sets according to the reordering mode of the accumulation matrix, forms a vector path queue, forms a plurality of vector field data sets through interpolation according to the vector path queue, and displays according to the vector data set. Since the data amount is small, the amount of calculation is small during processing, the delay is small, and the response speed is fast. The vector path is planned through the position matching mode, the vector field data is generated through the vector interpolation mode, so that the expansion of the vector field data set is realized, the picture smoothness is high, and the requirements of smoothness and response speed during rendering are considered.
Owner:TIANJIN RES INST FOR WATER TRANSPORT ENG M O T

Model rendering method and device, equipment and storage medium

The invention discloses a model rendering method and device, equipment and a storage medium, and relates to the technical field of computer graphics. The method comprises the following steps: acquiring a three-dimensional model to be rendered; according to the feature data of each vertex in the to-be-rendered three-dimensional model, vertex distribution of the to-be-rendered three-dimensional model is adjusted, and an adjusted three-dimensional model is obtained; and rendering the adjusted three-dimensional model based on the adjusted vertex distribution of the three-dimensional model. Since the feature data are used for reflecting the features of the positions of the vertexes in the three-dimensional model, the method realizes self-adaptive adjustment of vertex distribution for different positions of the three-dimensional model, so that when rendering is executed for the adjusted three-dimensional model, different structures of the three-dimensional model correspond to different rendering precisions, and the rendering accuracy of the three-dimensional model is improved. Therefore, the rendering quality is guaranteed while automatic rendering is realized.
Owner:SHENZHEN TENCENT INFORMATION TECH CO LTD

Three-dimensional reconstruction method and system of three-dimensional gaussian splatter indoor scene based on planar prior guidance

The present application relates to a kind of three-dimensional reconstruction method and system of three-dimensional Gaussian splashing indoor scene based on plane prior guidance, belong to three-dimensional reconstruction and computer graphics technology field.The method aims to solve the problem of inaccurate geometry reconstruction and easy to produce artifact in weak texture area in indoor scene reconstruction, especially in weak texture area.The method aims to solve the problem of inaccurate geometry reconstruction and easy to produce artifact in weak texture area in indoor scene reconstruction, especially in weak texture area.First, obtain multi-view image and its camera parameter, predict depth and normal prior, and extract plane area by multi-granularity segmentation and geometric consistency test.Density point cloud is generated by depth prior back projection, and three-dimensional Gaussian splashing model is initialized based on down-sampling point cloud.Finally, under the framework of differentiable rendering, the model is optimized by combining plane area geometric constraint, non-plane area geometric constraint and global geometric constraint, and the reconstruction is completed.The present application effectively improves the reconstruction accuracy of weak texture plane area, enhances the detail recovery ability of complex structure area, and realizes the reconstruction result with visual high fidelity and geometric accuracy.
Owner:CHONGQING UNIV

A virtual reality level simulation method based on material point method and gridding surface reconstruction

A virtual reality level simulation method based on material point method and gridding surface reconstruction belongs to the cross field of computer graphics, physical simulation and virtual reality technology. The steps are as follows: S1, storing the material point position coordinates according to the material point material number, and obtaining the bounding box boundary of the material point by traversing the coordinates; S2, defining and selecting the grid size and boundary extension distance for reconstructing the surface, and generating the grid; S3, selecting a Gaussian function to calculate the contribution of each material point to the overall material point density field, and obtaining the parameters; S4, calculating the contribution of each material point to the overall material point density field, and accumulating to obtain the overall material point density field; S5, obtaining the isosurface of the overall material point density field, and exporting it as a general three-dimensional model of a rendering engine to obtain a simulation visual effect. The method can solve the problems that the prior art cannot process ten million material points, the reconstruction parameter selection is difficult, and the connection with a high-end rendering engine is not smooth, and realizes a virtual reality level simulation visual effect.
Owner:DALIAN UNIV OF TECH