关键词: 唐卡, 破损区域, 分割

Abstract: The damaged regions in Thangka need to be segmented in order to repair Thangka. A method is proposed that can segment the damaged regions according to the classification of damaged area, aiming at the characteristics of damaged regions in Thangka for missing colors. The edges can be obtained using gray Gradient modules; the regions can be gained through by edges spreading before removing the fake edges. The regions are divided into small regions and large regions, which are handled separately. Small damaged regions can be obtained after removing the fake damaged regions; large regions need a series of processing, removing fake damaged regions, extracting the large regions, remaining complex regions; the tiny damaged regions and damaged holes regions are extracted from the complex regions, they are combined, dilated, the damaged regions are obtain after removing fake damaged regions. The small damaged regions, large damaged regions and the damaged regions in the complex regions are combined into together, the damaged regions are segmented in the whole image. The segmentation result is fine through by the experiments.

Key words: Thangka, damaged regions, segmentation