SUSTAINABLE DIGITAL RESTORATION AND 3D VISUALIZATION OF CULTURAL HERITAGE: A CASE STUDY IN MOGAO GROTTOES OF DUNHUANG, CHINA

Abstract

Dunhuang is the world's largest, longest-lasting, and most valuable cultural and artistic treasure of ancient murals and an important component of grotto art. The clothing and costumes of the Dunhuang murals reflect the process of Sinicization of Buddhism over the time. In order to save the costumes of these murals from deterioration and age-related factors, digital technology is used, which can not only save the precious cultural relics but also ensure their permanent and authentic preservation. This study takes the vestment on the imperial mural of the Vimala Kirti Sutra of Cave No. 220 in the Mogao Grottoes of Dunhuang, China, as the research object. Firstly, it studied the detailed components, materials, colors, heraldic symbols, meanings, and aesthetic characteristics of mural vestments from the perspective of clothing history. Then, it restored the clothing patterns in the murals using digital technology, established the three-dimensional clothing model on the CLO 3D platform, and carried out the 3D digital restoration of the research object. In order to verify the accuracy of the restoration results, the analytic hierarchy process and the entropy method were comprehensively used to determine the subjective and objective weights of the indexes, and the comprehensive weights were corrected based on the idea of game theory. Finally, fuzzy comprehensive evaluation was used for the restoration results. According to the final calculation result of fuzzy comprehensive evaluation, the restoration result was considered “good” with an overall evaluation score of 80.35. One of the greatest challenges of this project revolved around recovering the dilapidated mural paintings using digital technology. The high precision of the digital restoration of the vestment showcases the three-dimensional dynamic appearance of the Tang Dynasty emperors. This not only facilitates the education and propagation of traditional costume culture but also offers a novel approach to the sustainable display of mural cultural heritage.