Research on precise restoration of Thangka and Tibetan murals integrating contour drawing techniques
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Date
2025
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Chinese murals and Thangka paintings are crucial elements of traditional culture and have occupied a central position in religious practices. However, these artworks are increasingly threatened by natural deterioration and human interventions. Although current restoration methods have adopted data-driven regeneration paradigms, these models are trained to reconstruct appearances based on learned statistical patterns, yet often overlook the symbolic and semantic layers intrinsic to the artworks. In response, we propose a line-drawing guided restoration framework. Functioning as an aid rather than a substitute for human expertise, our model generates structure-preserving suggestions that assist human restorers in accurately reconstructing damaged artworks. The model employs encoders capable of capturing features from both original Thangka images and their corresponding line drawings, mapping them into a discrete latent space for further processing. Subsequently, a decoder synthesizes restored images from these fused representations, achieving faithful inpainting. Evaluation on datasets of Thangka paintings demonstrates that, compared to state-of-the-art methods, our approach achieves maximum reductions of 58.5% in MAE and 63.8% in LPIPS, coupled with SSIM improvement reaching 44.0%. These findings substantiate the efficacy of our method in preserving intricate details and improving visual coherence, supporting more faithful cultural preservation.
Description
CCS Concepts: Applied computing → Arts and humanities; Computing methodologies → Image processing; Machine learning
@inproceedings{10.2312:dh.20253242,
booktitle = {Digital Heritage},
editor = {Campana, Stefano and Ferdani, Daniele and Graf, Holger and Guidi, Gabriele and Hegarty, Zackary and Pescarin, Sofia and Remondino, Fabio},
title = {{Research on precise restoration of Thangka and Tibetan murals integrating contour drawing techniques}},
author = {Li, Mingxu},
year = {2025},
publisher = {The Eurographics Association},
ISBN = {978-3-03868-277-6},
DOI = {10.2312/dh.20253242}
}