Hole-filling method for reconstructing separated arm models of the mongolian buddha statue for analyzing body shape of statues

Extracting reconstructed decoration and body parts from Buddha statues collection contributes to cultural and archaeological analyses. To fully analyze the similarity between different statues, reconstructed body parts without decoration are required. This paper proposes a sufficient hole-filling method to reconstruct solid models of a statue arm that does not feature decoration on the surface. In our approach, decoration and body parts are separated according to segmented decoration points. Once decoration parts are separated from the original model, complex holes and gaps are left in the body part. Thus, a hole-filling method is introduced in this paper, to construct a complete surface model of an arm. We implemented our hole-filling method using a general B-spline surface-fitting technique based on information from divided rectangular surfaces. Once the body part is completed using the hole-filling method, a solid model is reconstructed. The proposed method was tested on arm parts from Mongolian Buddha statues and the precision of the hole-filling method was confirmed. The solid model of an arm part was reconstructed from point clouds of completed body model.