Similarity Index Based Approach for Identifying Similar Grotto Statues to Support Virtual Restoration

Grottoes, with caves and statues, are an important part of immovable heritage. Statues in a particular grotto setting often similar geometric form artistic style, identifying the similarity between these statues can help provide references for value recognition, condition assessment, repair, virtual restoration statues. Traditionally, such reference information mainly depended on expert empirical judgment, which is highly subjective, lacks quantitative analysis, cannot effective scientific support This paper presents index based approach similarities by studying 11 small Buddhist carved 18th cave Yungang located Datong, China. The determined according to hash values calculated pHash method using orthophoto images identify Similar feature points identified then matched Scale Invariant Feature Transform (SIFT) operator repair reconstruction damaged experimental results show that variation confirms visual inspection statues’ appearance orthophotos. additional analysis three-dimensional (3D) point clouds also accurate initial screening