56 results about "Digital restoration" patented technology

The invention belongs to the technical field of digital restoration of computer vision and cultural heritage, and particularly relates to a traditional picture restoration method fusing low-resolution prior and efficient visual selection, which comprises the following steps: constructing a multi-source image data set, taking images in the multi-source image data set as high-resolution images, preprocessing the high-resolution images to obtain low-resolution images, and carrying out high-resolution priori and high-efficiency visual selection on the low-resolution images. The high-resolution image and the low-resolution image are respectively masked to generate simulated damage mask images, and the simulated damage mask images comprise a regular damage mask image and an irregular damage mask image; taking the multi-source image data set and the preprocessed multi-source image data set as training data, and training a multi-source image model; the dual-stage repair network comprises a coarse repair network and a fine repair network; according to the method, the problems of structural semantic loss, high priori information dependency and insufficient global and local coordination when an existing image restoration method is used for processing a complex scene and a large-range missing region are solved.

The invention discloses a bronze ware ornamentation and pattern digital restoration method based on an image enhancement technology, and relates to the technical field of image restoration, and the method comprises the steps: building a space mapping matrix; extracting multi-modal data features by using the surface state of the topological insulator, and registering a joint data volume; forming a super-resolution image through super-resolution reconstruction; obtaining a material degradation coefficient by using a wavelet finite element method and a graph neural network; generating an adversarial network by utilizing physical constraints, and generating an embarrassment repairing result; a material sensing three-dimensional model is constructed by adopting a wavelet packet decomposition and neural radiation field fusion technology, texture mapping is dynamically adjusted based on a graphene Moire effect, and virtual-real fusion is performed through holographic waveguide AR; by combining advanced technologies such as a metamaterial lens, micro-distance laser scanning, a topological insulator film, a graphene heterojunction and a nerve radiation field, high-precision three-dimensional digital restoration and repair of bronze cultural relics are realized, and immersive augmented reality display experience is provided.

The invention belongs to the technical field of wall painting restoration, and discloses a damaged image automatic digital restoration method comprising the following steps: a data collection module collects geological data and image data; the three-dimensional structure scanning unit obtains a three-dimensional structure of the surface of the mural and space coordinates of a damaged area; the infrared imaging unit extracts a bottom layer pattern; the intelligent damage detection module locates a damage area; the multi-modal generative repair module complements a damaged physical form through a structural layer repair unit, and the repair scheme planning module plans an entity repair route and a material scheme; the damaged area color partitioning and boundary extraction module is used for performing partitioning and boundary extraction on the color for repairing the damaged area; and the entity repair execution module completes physical repair. According to the invention, through linkage of entity repair and digital achievements, the entity repair execution module performs physical repair based on a digital repair model, so that excessive dependence of traditional repair on artificial experience is broken through, and historical authenticity and artistic integrity of the mural are guaranteed by a scientific method.

The invention discloses a historical document restoration method and system based on implicit interpolation network enhancement. The method comprises the following steps: acquiring a damaged historical document image, a position mask image for identifying a to-be-restored area and a content guide image for guiding the semantic meaning of restored content; constructing a historical document repair model based on a de-noising diffusion probability model; training the historical document repair model by using a training data set containing damaged image and intact image pairs; and inputting the damaged historical document image to be repaired, the position mask image and the content guide image into the historical document repair model, and outputting the repaired historical document image. According to the method, the accuracy of the character content in the restoration area and the naturalness of the visual boundary are remarkably improved, and high-fidelity digital restoration of complex degraded literatures such as ancient books and inscription rubbings is realized.

The invention discloses an AI-based historical defective fresco digital restoration system, and relates to the technical field of AI restoration, a two-channel filter and a U-Net network are adopted to extract a fresco damage boundary, and edge detection is enhanced in combination with manual labeling; calculating a multi-scale Hurst index, and constructing a matrix quantization fractal feature change rule; dynamically generating a probabilistic grammar rule set based on the fractal incidence matrix, and defining a state transition probability function of texture growth; recursively executing texture generation driven by grammar rules from boundary points, and introducing random disturbance attenuating along with depth to simulate a stroke natural form; textures are generated through Laplacian pyramid layered correction, and the phase of a reference image is aligned in a Fourier domain to reserve structural consistency; and solving an affine transformation matrix with unchanged illumination in the transition zone, and globally optimizing color connection between the restoration area and the original wall painting. According to the method, the dynamic grammar rule base is established by analyzing the fractal features of the residual strokes, so that the generated texture follows creation logic, and the visual coherence of a recovery area is improved.

The invention provides a thangka image exposure correction method and device based on illumination separation and color compensation. A composite network architecture is constructed and comprises three core modules: an illumination separation simulation module (LSAM), an adaptive convolutional color compensation module (ACCM) and a wavelet attention feature enhancement module (WAEM), the LSAM generates darkening and brightening feature maps through illumination separation, and image details are enhanced in combination with channel attention and a multi-scale self-attention mechanism; the ACCM dynamically adjusts color deviation through dynamic convolution and deformable convolution, and color errors are reduced; wAEM is combined with wavelet transform and an attention mechanism to extract and enhance low-frequency and high-frequency features of the Thangka image, and texture and color details are enhanced. Through cooperative work of the modules, the problem of uneven exposure of the Thangka image can be effectively solved, the color fidelity and detail definition of the corrected image are remarkably improved, and effective technical support is provided for digital repair and protection of the Thangka image.

The invention discloses a three-dimensional matching and digital restoration method for cultural relic fragments, and relates to the technical field of cultural relic restoration, and the method comprises the steps: obtaining the point cloud data of each fragment belonging to the same cultural relic; constructing a triangular mesh model of each fragment by adopting a Poisson surface reconstruction method; repairing the corrosion edge in the triangular mesh model of each fragment; a multilevel matching algorithm is adopted to carry out registration on the triangular mesh model, subjected to edge restoration, of each fragment, and the optimal splicing position and attitude parameters of each fragment are obtained; according to the optimal splicing position and the attitude parameter of each fragment, splicing the triangular mesh model of each fragment after edge repair to obtain an initial cultural relic digital model; and repairing the missing area of the initial cultural relic digital model to obtain a repaired cultural relic digital model. According to the method, the precision and efficiency of cultural relic repair are improved, the risk of manual operation is reduced, and meanwhile, the traceability and reversibility of the repair steps are ensured.

The invention discloses a maxillary obturator made of a novel material, and relates to the technical field of oral treatment maxillary obturations.The maxillary obturator comprises an obturator base body, the upper surface of the obturator base body is fixedly connected with a reinforcing layer for conducting auxiliary reinforcing on the obturator base body, and the upper surface of the reinforcing layer is fixedly connected with a medical soft silica gel layer; the auxiliary deformation structure abuts against the medical soft silica gel layer through an electroactive polymer arranged in the reinforcing layer. According to the maxillary obturator made of the novel material, the interior of the mouth is scanned through the digital repairing technology, scanned data are collected, a prosthesis can be accurately and rapidly designed, the prosthesis can be accurately and rapidly manufactured through the digital machining and manufacturing technology, and the practicability is high. The medical soft silica gel layer correspondingly deforms and is tightly attached to the upper jaw through the migration volume change of ions in the polymer, so that the change of the internal pressure of the oral cavity is further reduced when the patient swallows and speaks, and the phenomenon of unstable attachment of the plate body is avoided.

The present invention discloses a method, device, equipment, and medium for digital restoration of ancient Chinese book images, wherein the method includes the following steps: obtaining an image of an ancient book with missing text and original text data corresponding to the image of the ancient book; using a preset Chinese character detection model to obtain the positioning frame coordinates of all text on the ancient book image, checking the missing positions on the original image based on the positioning frame coordinates and the original text data, and obtaining the positions of the text that needs to be repaired; obtaining the writing style in the ancient book image, and generating a text image of the corresponding writing style based on the text that needs to be repaired; performing pixel-level segmentation processing on the generated text, and pasting the text image at the corresponding position on the ancient book image based on the obtained position of the repaired text. The present invention is the first to propose a technical solution for digital restoration of ancient books, which can effectively save a lot of manpower and time costs required for digital restoration of ancient books. The present invention can be widely used in the field of digital protection of ancient books.

This invention provides a method and system for batch digital restoration of ancient books. The method includes: scanning the ancient book to be restored and generating multiple original images of the book based on all its pages; performing image preprocessing on the original images to generate multiple digital images of the book, including noise detection, normalization, and format conversion; generating spatial feature maps and content feature maps based on the digital images; determining a joint restoration decision based on the spatial and content feature maps; and batch restoring the multiple digital images of the book based on the joint restoration decision. By connecting edges, the discrete areas to be restored are organized into an organic whole, ensuring visual consistency and semantic coherence in the restoration results while improving the efficiency of batch restoration of ancient books.

A steel structure digital restoration device and method for digital twin construction, the device comprises a structure recognition module, the structure recognition module is configured to: the point cloud information of the acquired steel structure is executed in a virtual three-dimensional space according to its embedded space coordinate information based on the corresponding restoration operation of position, the total model field about the distribution of point cloud in space is acquired, and the restored point cloud information is in the form of a point model in the total model field;Based on the distribution of point cloud, the position with the best point model density is automatically selected, slicing is carried out to obtain the basic cross-section data of the structure;Based on the image in the basic cross-section data, the identification and judgment of the type of steel structure are executed, after correctly identifying the type of steel structure, the three-dimensional model fitting restoration of slicing is executed based on the identified type of steel structure.The present application can directly restore the three-dimensional pipeline model with high precision, and the engineering personnel can obtain the information of all steel structures in the whole factory by directly observing the three-dimensional steel structure model with sufficient rich details.

The invention discloses a Dunhuang mural digital restoration method based on a Mama enhanced coding feature fusion network, and relates to the technical field of mural digital restoration. The method comprises two sub-networks, namely a main repair network and a detail enhancement network. The main repair sub-network completes the preliminary repair task of the mural through the fusion of texture and geometric features, and the detail enhancement network performs secondary repair on the basis of the main repair network and introduces jump connection to enhance the detail capture capability. A contrast experiment result on a Dunhuang mural data set shows that compared with an existing popular method, the method disclosed by the invention obtains a better mural digital repairing effect.

The invention proposes a real-time Thangka image semantic segmentation method and system based on improved PIDNet, and the method comprises the steps: carrying out the optimization of three branches of PIDNet for solving the problems of the fine texture of Thangka, and the wrong division, missing division and poor real-time performance caused by the interweaving of a main body and a background: sequentially embedding an ECA-Pag channel attention module and an LGFM local-global fusion module at the tail end of a P branch, details of the main esterm and the summator are strengthened; pConv3 mask partial convolution is introduced into a D branch, background noise is suppressed, and boundary definition is improved; the I branch keeps multi-scale pooling and provides global semantics. During reasoning, three-branch optimization features are fused after scale alignment and channel unification, and a pixel-level segmentation result is output through Softmax. According to the method, while the light weight of the network is kept, the confusion and edge fuzzy defects of the Thangka similarity summator are remarkably improved, and the method can be operated in real time, is suitable for Thangka digital repair, interactive labeling and culture research, and has the capability of migrating to other semantic segmentation tasks.

The application relates to the field of non-heritage culture 3D generation, and particularly relates to a Lingnan non-heritage culture 3D experience system based on generative artificial intelligence, which comprises a 3D digital restoration module, a virtual reality module, an interactive experience module, a culture activity preview module and an intelligent question and answer guide module; a 3D generation circulation reconstruction model is used for non-heritage culture 3D, the model cyclically uses a generation module based on 2D diffusion and a feedforward 3D reconstruction module in a multi-step diffusion process, and the diversity and texture consistency of 3D generation of non-heritage cultural articles are enhanced; a neural accumulator method is used to continuously converge low-resolution visual information between one frame and another frame, a neural super-resolution module is used, in the gaze point super-resolution reconstruction stage, a feature block grouping and processing strategy based on a quality mark is used, the calculation efficiency is improved, and the output image is significantly improved in terms of detail expressiveness and visual definition.

The invention discloses a digital intelligent oral cavity restoration process simulation system and method based on an oral cavity video, and belongs to the technical field of oral cavity digital restoration. The system comprises an oral cavity video acquisition module which is responsible for multi-angle video acquisition, preprocessing and oral cavity key point extraction; the modeling module is used for completing multi-view matching, three-dimensional basic model construction and defect identification and occlusion analysis; the three-dimensional repair design module is used for designing a three-dimensional tooth repair model in a digital environment; the virtual assembly detection module carries out assembly and biting fit detection to obtain fit indexes; the process simulation module adjusts process parameters based on the adaptation indexes and simulates and repairs the tooth state; and the repair scheme determination module iteratively optimizes the design parameters according to the state data and the ideal target to obtain a final optimized repair scheme. According to the scheme, the oral cavity three-dimensional model is reconstructed based on the multi-angle video, repair design is completed in combination with defect and occlusion analysis, a personalized scheme is generated through simulation evaluation and iterative optimization, and the repair precision is improved.

The application discloses a 3D printing resin jaw fork fixing method and system for complex dentition patients, relates to the technical field of oral digital restoration, and comprises the following steps: obtaining intraoral scanning data of the dentition patient, extracting mandibular dentition support points, undercut locking areas and dynamic occlusion interference boundaries based on the occlusion point trajectory, establishing a three-dimensional digital model of the mandibular full dentition and occlusion relationship with bearing stability weight and motion avoidance constraints, and performing coordinate unification and assembly gap matching according to the interface specifications of the scanning face bow, the occlusion recorder and the mandibular metal jaw fork to obtain a preliminary docking feature set. The 3D printing resin jaw fork fixing method and system for complex dentition patients improve the accuracy, repeatability and clinical operation efficiency of occlusion recording and mandibular motion analysis of complex dentition patients.

The invention discloses a wall painting digital restoration method based on layered line draft constraint, which comprises the following steps of: decomposing a wall painting line draft into a contour layer, a detail layer and a texture layer, extracting visual information of each layer through multi-scale analysis, and performing layered restoration by respectively adopting a structure propagation algorithm, a texture synthesis algorithm, a color migration technology and the like. In the restoration process, each layer of line draft serves as a constraint condition to guide the structure, detail and texture restoration of a restoration area, a result is refined step by step in combination with an iterative optimization strategy, global optimization based on the deep learning technology is carried out, and finally a high-precision restoration image is output. The innovation point of the method lies in a layered line draft constraint mechanism, a targeted repair algorithm based on the line draft and deep learning technology auxiliary optimization, the repair precision, efficiency and naturalness of the complex damaged mural are remarkably improved, and the method is suitable for the fields of cultural relic protection and cultural heritage digitization.

The application discloses an intelligent quality control system and method for manufacturing of full-welding pressure plate heat exchangers, and relates to the field of intelligent manufacturing, and comprises: a detection module for detecting heat exchanger surface structure parameters and constructing a heat exchanger three-dimensional model based on the heat exchanger surface structure parameters; and a derivation module for receiving the heat exchanger three-dimensional model, picking up incomplete models on the surface of the heat exchanger three-dimensional model, and respectively deriving bounding boxes of the incomplete models based on the picked-up incomplete models. The application realizes high-precision digital restoration of the heat exchanger structure by means of infrared distance measuring sensors densely arranged on a ring guide rail, combination of position and time stamp information, conversion of a large number of distance measuring results into three-dimensional space line segments, and splicing of the three-dimensional space line segments into a closed three-dimensional model, so as to provide quality control services for the heat exchanger.

This invention proposes a method for digital restoration of damaged historical buildings based on multi-source historical data and generative models. The method includes: acquiring historical images and mapping point clouds; generating a structurally perceptual representation that fuses image boundaries and spatial traces through multi-layer convolution and spatial gridding statistics; performing reverse inference using an inference model containing one-dimensional convolution and bidirectional gating units, and generating a complete structural expression by combining existing trace constraints; introducing this structural expression into a neural radiation field (NeRF) to construct an initial voxel field and scene guidance kernel controlled by the building's structural logic, achieving 3D reconstruction with spatial thickness and vertical differences; calculating the display reliability coefficient based on multi-view appearance consistency and geometric stability, and performing differentiated rendering and multi-scene applications on the model. This invention achieves integrated restoration from trace alignment and structural inference to reliable display, effectively solving the problem of missing geometric and structural logic in the digital restoration of damaged historical buildings.

The application discloses an ancient armor digital restoration system and method based on three-dimensional modeling, relates to the technical field of digital restoration, and comprises the following steps: extracting local thickness and defining a neutral point, and forming a residual part neutral surface by all the neutral points; screening the nearest neighbor set of reliable areas for each damaged area, and defining a target curvature field; defining a reliable connection boundary according to a displacement field, performing rigid body registration on the reliable connection boundaries of different residual parts, screening connection relationship candidates, introducing a binary selection variable to establish a global constraint, defining a global assembly topology set for the connection relationship candidates, and performing boundary closure and difference set correction to form a restoration model. The application combines the use of the geodetic distance nearest neighbor, local coordinate system principal curvature solving and target curvature propagation, can keep the curvature transmission along the residual part body expansion path when there are fractures, curling and edge missing, and avoids the cross-layer misfit caused by the Euclidean proximity.

The invention discloses a steel structure digital restoration device and method for digital twin construction, and the device comprises a structure recognition module which is configured to carry out the restoration operation based on position correspondence in a virtual three-dimensional space according to the obtained point cloud information of a steel structure according to the embedded space coordinate information, acquiring a total model field about the distribution of the point cloud in the space, wherein the representation form of the restored point cloud information in the total model field is a point model; automatically selecting a position with the optimal point model density based on the distribution condition of the point cloud, and slicing to obtain basic section data of the structure; and performing identification judgment on the type of the steel structure based on the image in the basic section data, and after the type of the steel structure is correctly identified, performing three-dimensional model fitting reduction on the slice based on the identified type of the steel structure. According to the method, the three-dimensional pipeline model can be directly restored with high precision, and an engineer can obtain information of all steel structures in a whole factory by directly observing the three-dimensional steel structure model with sufficient and abundant details.

This invention discloses a method for the collaborative restoration of structure and texture in Dunhuang murals based on structural uncertainty, belonging to the field of image restoration technology. The method includes: a structure prediction step, which generates a structure reconstruction result through an encoder-decoder architecture based on codebook quantization and simultaneously outputs pixel-level structural uncertainty parameters; a texture reconstruction step, which models the texture completion process as texture flow propagation on a graph structure and adaptively adjusts the propagation range and constraint strength according to the structural uncertainty parameters; and a fusion step, which fuses structural features and texture features at multiple scales and dynamically adjusts the fusion strength according to the structural uncertainty parameters to generate the final restoration result. This invention achieves effective linkage between structure prediction and texture reconstruction through structural uncertainty parameters, suppressing the transmission of structural errors to the texture generation process when there is large-area damage or severe information loss, while maintaining overall consistency and natural detail, making it suitable for the digital restoration of Dunhuang murals.

The invention relates to the technical field of three-dimensional data scanning, and discloses a high-fidelity cultural heritage three-dimensional data scanning system. The system comprises the following modules: a multi-source data acquisition module, which is used for obtaining original data of cultural heritage in an omnibearing and multi-dimensional manner; the data processing and geometric modeling module is used for converting the original data into an accurate and complete initial three-dimensional model and intelligently diagnosing the geometric integrity of the initial three-dimensional model; the intelligent geometric repair and coordination analysis module is used for intelligently reasoning and reconstructing the original style and appearance of the damaged area to realize digital recovery; the texture and material high-fidelity restoration module is used for giving vivid color and material feeling to the geometric model; and the restoration guidance data output module is used for converting the high-fidelity digital model into a specific scheme capable of guiding an actual restoration action. According to the method, high-precision three-dimensional data acquisition, damage geometry intelligent reasoning and material high-fidelity restoration are integrated, and accurate guidance is provided from data acquisition to physical restoration.

This invention relates to the field of digital preservation and restoration of cultural relics, specifically a method for extracting and digitally restoring ancient artifact patterns based on point cloud models. It includes modules for manifold frequency domain mapping, spectral domain signal separation, topological skeleton repair, and Poisson fusion generation. The system constructs a Laplace-Beltramm operator to map the point cloud to the frequency domain, uses a bandpass filter to remove weathering noise and enhance the pattern layer, extracts the pattern skeleton to identify breakpoints, and combines a knowledge graph for non-rigid registration to generate a deformation guidance field. Its core is to use Poisson fusion to fill in missing information and output a restoration confidence heatmap, effectively solving the problem of aliasing between weathering noise and weak feature signals, achieving micron-level high-fidelity restoration.

The invention discloses a digital jaw position recording and occlusal relationship collecting device and method, and relates to the technical field of oral medicine. Comprising the following steps: acquiring upper and lower jaw tissue surface data of a to-be-detected person, generating an oral cavity model of the to-be-detected person, performing three-dimensional data design based on the oral cavity model to obtain a tray model, importing the tray model into 3D printing software to obtain a personalized occlusion tray, wearing the tray by the to-be-detected person, and obtaining a static jaw position relationship by utilizing a three-dimensional scanner. The method comprises the following steps: acquiring opening and closing, lateral and front-back movement track data by using a lower jaw movement analysis system to form acquisition data, preprocessing the acquisition data, and inputting the preprocessed data into digital restoration / orthodontic design software to carry out subsequent digital design and analysis of a restoration / orthodontic appliance. According to the invention, high-precision jaw position recording and occlusal relationship acquisition are realized, data can be seamlessly jointed with a digital design process, the prosthesis adaptation rate and the treatment efficiency are improved, and the method has remarkable clinical application value and popularization prospect.

This invention provides a method for restoring the structure of a diagnosis and treatment flowchart based on a multimodal large model. The method includes: preprocessing the diagnosis and treatment flowchart; establishing a standardized structure format and prompt templates for the flowchart; designing a graph structuring loss function for the multimodal large model; fine-tuning the multimodal large model to restore the flowchart structure; inputting the flowchart and prompt templates into the fine-tuned model, outputting structured content conforming to the flowchart format specifications; restoring the structured content to a standardized, clear flowchart; and storing the structured content output by the multimodal large model, the edited structured content, and the corresponding flowchart in a database. This invention can automatically extract the node content and its connections from the input diagnosis and treatment flowchart image and convert it into a standardized, clear flowchart structure, achieving digital restoration of the diagnosis and treatment process.

The present disclosure relates to a display method, device and storage medium of a virtual jaw frame. The display method of the virtual jaw frame comprises: acquiring first facial three-dimensional data, second facial three-dimensional data, tooth three-dimensional data and radiographic three-dimensional data of a patient; aligning the first facial three-dimensional data and the radiographic three-dimensional data based on the tooth three-dimensional data; extracting facial feature points from the second facial three-dimensional data and tooth arrangement feature points from the tooth three-dimensional data or the radiographic three-dimensional data; constructing a reference axis and a plurality of reference planes of the patient according to the facial feature points and the tooth arrangement feature points; and displaying a facial three-dimensional model and a virtual jaw frame of the patient on a display interface, wherein the positional relationship between the virtual jaw frame and the facial three-dimensional model is determined based on the reference axis and the plurality of reference planes. The method provided by the present disclosure can accurately transfer the occlusion relationship of the patient to the virtual jaw frame, thereby providing a reliable basis for digital restoration.

The invention belongs to the technical field of virtual reality and cultural heritage protection crossing, and particularly relates to a meta-universe-based cultural heritage virtual reconstruction display system, which comprises a data acquisition module, a virtual modeling module, a meta-universe engine module, an immersive display module, a block chain authentication module and a user behavior analysis module. According to the scheme, a new method of multi-source data acquisition and deep learning restoration is combined, a laser scanner, an unmanned aerial vehicle and a high-definition camera are used for performing high-precision data acquisition on cultural heritage from multiple angles, and an enhanced U-Net network is used for performing accurate positioning and preliminary restoration on an irregular incomplete area in an image; the learning and expression ability on complex visual features is enhanced; according to the scheme, the edge guide diffusion model is introduced, the edge information is used as prior guidance, the defect area in the cultural heritage is subjected to refined restoration, and higher-quality digital restoration and protection of the cultural heritage image are realized.