Ancient Repairs on Pottery from Olbia Pontica

Bilde, Pia Guldager; Handberg, Søren

doi:10.3764/aja.116.3.0461

Cited by 9 publications

(2 citation statements)

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“…Their algorithm efficiently searched for matching fragments using the scanned geometry. Other scholars virtually reconstructed the broken heritage objects by utilizing their own axes, generatrices, and other geometric features [3,5,34]. Fantini carried out human-machine interactive virtual restoration of damaged ancient skulls, damaged pottery figurines, and stone statues [6,34,35], where the symmetry was obvious.…”

Section: Background and Related Workmentioning

confidence: 99%

“…The first type applies to symmetric objects that can be divided into two or more identical pieces, so undamaged pieces can be used as the basis for reconstructing damaged pieces. This type of method has been studied on small portable symmetric antiquities such as potteries and vases [4][5][6] and sizeable immovable grotto Buddhist statues such as the Thousand-hand Bodhisattva in Dazu, China [7][8][9][10]. The second type of method focuses on a cluster of heritage objects, such as the terracotta warriors in China [11] and the human face statues of the Bayon temple in Cambodia [12,13], which may be similar or have similar or repetitive parts that can be used as references for reconstruction.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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

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