Three-dimensional restoration of damaged porcelain cultural relics based on diffusion model

By using a diffusion model that combines normal map geometric constraints and cross-view attention fusion, the problems of texture distortion and multi-view inconsistency in porcelain restoration are solved, achieving high-fidelity texture generation and accurate geometric reconstruction, which is suitable for cultural relic protection and virtual display.

CN122391027APending Publication Date: 2026-07-14DALIAN NATIONALITIES UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN NATIONALITIES UNIVERSITY
Filing Date
2026-04-16
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing technologies for repairing porcelain with complex curved surfaces suffer from problems such as texture perspective distortion, poor geometric consistency, and flickering of content from multiple perspectives, making it difficult to achieve high-fidelity texture generation and accurate geometric reconstruction.

Method used

A diffusion model repair framework based on the fusion of normal map geometric constraints and cross-view attention is constructed. Through a multi-view 3D repair network, normal maps are introduced as geometric constraints and a cross-view attention mechanism is introduced into the diffusion model to improve texture consistency and geometric accuracy.

Benefits of technology

It improves the accuracy of texture generation in complex curved areas, enhances information sharing between multiple perspectives, avoids texture distortion and visual flicker, and is suitable for cultural relic protection scenarios to avoid secondary damage.

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Abstract

The present application relates to the technical field of computer vision and digital image processing, and discloses a three-dimensional restoration method for damaged porcelain cultural relics based on a diffusion model. In view of the problems of texture perspective distortion, poor three-dimensional geometric consistency and multi-view inconsistency in the restoration of complex curved porcelain in the prior art, the present application acquires multi-view RGB images, mask images and surface normal maps of damaged porcelain, and extracts image features and geometric features; the geometric information of the normal map is injected into the diffusion model through a normal adapter module to realize single-view restoration guided by geometry; in the denoising process of the diffusion model, a cross-view attention mechanism is introduced, the current view features are used as query vectors, and the key vectors and value vectors are expanded cross-view to fuse adjacent view features, so that a multi-view consistent restoration result is realized. The present application is suitable for the fields of digital protection of cultural relics, virtual display and restoration of cultural heritage.
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