14 results about "Digital restoration" patented technology

The application relates to a building digital repair method based on a two-dimensional multi-channel texture feature of a point cloud image, and relates to the technical field of three-dimensional modeling.The application combines a point cloud and an image of a building to construct a two-dimensional multi-channel building structure texture representation; in a two-dimensional image domain, building structure texture representation of a damaged building is restored into building structure texture representation of a complete building by using a trained adversarial repair model; building point cloud images and building depth maps of the complete building in the building structure texture representation are restored into three-dimensional point clouds containing texture information by using pose information and space information combined with pixel points in the building structure texture representation; a repaired building three-dimensional model is obtained by performing Poisson reconstruction on the three-dimensional point clouds containing texture information of the complete building; and the building three-dimensional model is colored by using the texture information.The application changes a data structure, better repairs a structure and texture in a two-dimensional domain, and restores to three-dimensional.

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 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.

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.

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.

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 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.

This invention discloses a novel digital restoration method for jar-shaped cultural relics, comprising: digitizing cultural relic fragments using a scanner; simulating the assembly of the fragments using scanning or design software and checking for seamless data connection; measuring curvature and assembling the fragments based on the cultural relic data; simulating the original cultural relic based on its restored position and designing an outer shell to enclose the fragments and a padding located on the upper inner side of the jar-shaped cultural relic, wherein the outer shell serves as the main load-bearing component and positioning grooves for positioning the cultural relic fragments are provided on both the outer shell and the padding; printing the outer shell, the padding, and the simulated lost fragments using 3D printing; and manually assembling and restoring the jar-shaped cultural relic fragments using the outer shell and the padding. This invention eliminates the need for any adhesives and allows for the replacement and aesthetic restoration of cultural relics with the support of transparent supports, enabling the display of the cultural relics.

This application relates to the field of artificial intelligence and discloses a method for extracting cultural elements based on intelligent recognition. It aims to address the problems of low segmentation accuracy, broken or adhered boundaries in cultural heritage images caused by low contrast, complex structure, and scarce annotations. The method includes: acquiring a cultural image and generating an initial coarse mask using pre-trained U-Net++; inputting the image and mask into a conditional generator to generate a high-fidelity reconstructed image; calculating a local adversarial loss using a PatchGAN discriminator; using the gradient of this loss to back-update the U-Net++ segmentation head parameters; iteratively optimizing until the mask converges, and outputting a refined binary mask. This application, through a generative adversarial self-supervised mechanism, significantly reduces the dependence on newly added pixel-level annotations, guiding the model to learn continuous natural boundaries that conform to human cognition, while requiring only a small number of pixel-level annotations for network initialization. The resulting mask can be directly used for vectorization, 3D reconstruction, and digital restoration, supporting high-fidelity digital applications of cultural heritage.

Photographic film or microscopic objects are transilluminated with a rotating angular light flux of a high aperture ratio. This enables retrieving information with a higher spatial bandwidth than heretofore possible. Furthermore, this way of transilluminating reduces, both, image noise and aliasing at the sensor array. The fundamentally different way of extracting information provides an improved basis for digital restoration of photographic material.In microscopic applications scattering or fluorescent details can be better separated from transmitted image content.

The application discloses a cultural relic pattern form digital restoration method and system based on a generative model, relates to the technical field of digital cultural relic restoration, and provides the following scheme, which comprises the following steps: obtaining a surface image set of a target cultural relic, obtaining a base grid through three-dimensional reconstruction and standardization processing, fusing grid pattern evidence and multi-view consistency measurement by registering and projecting the surface image set in the base grid, and being based on the grid pattern evidence and the multi-view consistency measurement. According to the application, an event closed-loop error is constructed and is back-projected to a three-dimensional base grid to position an error section, a center line and a transverse width distribution are iteratively optimized along the section to update the geometric parameters of a strip-shaped body, a defect that local correction causes global deviation is overcome, a self-correction closed-loop control mechanism from structural error to geometric parameters is established, and the restoration process has a convergent optimization path and stable global structural consistency.

The utility model discloses a kind of mural digital repair equipment, it is related to digital repair technical field, including fixed base plate, the top of fixed base plate is equipped with fixed frame, and the top of fixed frame inside is provided with scanning assembly;The front and rear ends of the top inside fixed frame are both provided with dust removal and blow flat mechanism for ensuring that paper quality mural surface is clean and flat, and the four corners of the top of fixed base plate are both provided with pressing mechanism for positioning paper quality mural.The mural digital repair equipment, by placing the paper quality mural needing digital repair on the surface of fixed base plate, the elasticity of pressing spring itself is pressed, the side of pressing spring is pulled upwards, so that the distance between pressing spring and fixed base plate is increased, paper quality mural is placed between pressing spring and fixed base plate, then the pulling force applied to pressing spring is removed, the position of paper quality mural is fixed.