Digital Mapping and Tilt Analysis of Ancient Towers based on the Integration of Oblique Photography and 3D Laser Scanning Technology

DOI: https://doi.org/10.62517/jcte.202606205

Author(s)

Yongtong Wu, Xin Zhang, Yaoxin Wang

Affiliation(s)

China Jikan Research Institute of Engineering Investigations and Design Co., Ltd., Xi’an, Shaanxi, China

Abstract

As an important historical and cultural heritage in China, the digital protection and structural health monitoring of ancient pagodas are key measures for the inheritance of cultural heritage. Aiming at the problems of low efficiency, insufficient accuracy, and difficulty in obtaining comprehensive internal and external structural information of buildings with traditional ancient pagoda surveying and mapping methods, this paper adopts the combination of tilt photography and 3D laser scanning technology to conduct omnidirectional digital surveying and mapping of an ancient pagoda under a unified datum. Through field data collection, in-house data processing and fusion, a 3D real-scene model and a high-precision point cloud model of the ancient pagoda were constructed, and floor plans, elevations and sections of each floor were extracted and generated. Based on the digital model, the inclination state of the ancient pagoda was accurately analyzed, and the measurement results were verified against relevant historical documents, confirming their accuracy and reliability. Research shows that the fusion technology of tilt photography and 3D laser scanning can realize efficient and high-precision collection and digital reconstruction of internal and external structural information of ancient pagodas, provide scientific and comprehensive digital data support for the protection, restoration, structural monitoring and historical and cultural research of ancient pagodas, and also provide feasible technical solutions for digital surveying and mapping of similar ancient buildings.

Keywords

Ancient Pagoda; Tilt Photography; 3D Laser Scanning; Digital Mapping; Inclination Analysis; Cultural Heritage Protection

References

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