Spectral analysis of main mineral pigments in Thangka

摘要

The identification and analysis of the mineral pigments of the Thangka are of great significance to the identification, repair, digital archiving and reproduction of the Thangka. Hyperspectral imaging technology has the characteristics of non-contact, non-destructive, fast and efficient, which can obtain images and spectrum simultaneously and quickly in large scale. In this paper, the spectral features of Thangka's main mineral pigments were analyzed, and SVM method was used to classify the Thangka. The classification accuracy is 92.7%.