[논문]UAS, CRP 및 지상 LiDAR 융합기반 와형석조여래불의 3차원 재현과 고증 연구

오성종; 이용창

doi:10.22640/lxsiri.2021.51.1.111

[국내논문] UAS, CRP 및 지상 LiDAR 융합기반 와형석조여래불의 3차원 재현과 고증 연구
A Study on the 3D Reconstruction and Historical Evidence of Recumbent Buddha Based on Fusion of UAS, CRP and Terrestrial LiDAR 원문보기

지적과 국토정보 = Journal of cadastre & land informatix, v.51 no.1, 2021년, pp.111 - 124

오성종 (인천대학교 도시융.복합학과) , 이용창 (인천대학교 도시과학대학 도시공학과)

초록
AI-Helper

최근, 2019년 4월 15일에 있었던 노트르담 대성당 화재로 문화재 복원 및 재현에 대해 2008년 숭례문 화재사건 이후 관심이 다시 한 번 집중되고 있다. 특히, 기존에 활용되던 LiDAR 및 광파기 측량 등을 활용한 문화재 실측을 다양한 3차원 재현 기술을 활용하여 복원 및 재현하려는 연구가 활발히 진행되고 있다. 본 연구는 운주사의 와형석조여래불을 대상으로 최근 4차 산업혁명 시대에서 핵심기술로 자리매김한 UAV(Unmanned Aerial Vehicle)의 무인항공영상와 기존에 사진측량에 활용되던 근접영상(CRP) 및 지상 LiDAR 스캐닝을 활용하여 데이터를 획득하고, 이들을 3가지 융합모델로 SfM기반의 3차원 재현을 실시, 모델의 재현도 및 정확도를 비교·분석하였다. 아울러, 3가지의 모델 중 가장 우수한 융합모델을 활용하여 11세기 초 고려시대의 불교 천문학적 고증이 녹아있는 와형석조여래불을 실세계 좌표기반으로 북극성과의 연관성을 확인한다. 본 연구를 통해 문화재의 단순한 외형적인 3차원 재현뿐 아니라 문화재에 담긴 역사적 고증을 확인함으로써 문화재의 종류 및 형태에 따라 고증까지 함께 재현하는 방안을 모색하였다.

Abstract ▼ AI-Helper

Recently, Interest in the restoration and 3D reconstruction of cultural properties due to the fire of Notre Dame Cathedral on April 15, 2019 has been focused once again after the 2008 Sungnyemun fire incident in South Korea. In particular, research to restore and reconstruct the actual measurement of cultural properties using LiDAR(Light Detection and ranging) and conventional surveying, which were previously used, using various 3D reconstruction technologies, is being actively conducted. This study acquires data using unmanned aerial imagery of UAV(Unmanned Aerial Vehicle), which has recently established itself as a core technology in the era of the 4th industrial revolution, and the existing CRP(Closed Range Photogrammetry) and terrestrial LiDAR scanning for the Recumbent Buddha of Unju Temple. Then, the 3D reconstruction was performed with three fusion models based on SfM(Structure-from-Motion), and the reproducibility and accuracy of the models were compared and analyzed. In addition, using the best fusion model among the three models, the relationship with the Polar Star(Polaris) was confirmed based on the real world coordinates of the Recumbent Buddha, which contains the astronomical history of Buddhism in the early 11th century Goryeo Dynasty. Through this study, not only the simple external 3D reconstruction of cultural properties, but also the method of reconstructing the historical evidence according to the type and shape of the cultural properties was sought by confirming the historical evidence of the cultural properties in terms of spatial information.

주제어

표/그림 (13)

그림 Figure 1. Study flow chart
그림 Figure 2. Workflow of SfM photogrammetry Source: Farid 2018
그림 Figure 3. The schematic of a ToF sensor Source: Ling et al. 2019
그림 Figure 4. Recumbent Buddha in Unju-temple
표 Table 2. Trimble R8 GNSS specification Source: www.trimble.com
표 Table 3. Ground control points and check points
표 Table 4. DJI Phantom 4 Pro specification Source: www.dji.com
표 Table 5. Canon IXUS 180 specification Source: www.canon.co.uk
표 Table 6. Trimble SX10 specification Source: www.trimble.com
그림 Figure. 5 The result of three fusion models
표 Table 7. Check points accuracy of the 3D fusion models (unit : m)
그림 Figure 6. Polaris location in 1021(Top) and in 2021(Bottom)
그림 Figure 7. Northward deviation of Recumbent Buddha

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