Application Point cloud data of Terrestrial Laser Scan (TLS) and Unmanned Aerial Vehicle (UAV) in establishing a 3D model (case study at Dieu Son Pagoda, Bac Ninh province)

The architectural heritages are symbols of culture, social, historical, and religion and the exciting points of every city or country, especially for tourism development. In the world, thousands of architectural heritages are preserved and protected. UNESCO and many international organizations work together with all governments and local people to keep the heritages. Their efforts are great, but sometimes, the heritages are damaged and destroyed by a natural disaster and human activities. In Vietnam, many architectural heritages are in danger. Therefore, preservation of these architectural heritages is essential with all efforts from the government and scientists. This paper presents the results of applying UAV and Terrestrial laser scanners to model the architectural heritage in 3D with high quality for the purpose of preserving and protecting these works. The study was done by modeling the Dieu Son Pagoda in Bac Ninh Province. The result shows that the model is very detailed and precise enough to retain the building's main architectural characteristics.