Research on fine three-dimensional modeling technology of cultural statues

Abstract

Cultural Statues like other culture relics are important for cultural inheritance and education. While they are gradually damaged by the natural environment. In order to protect and repair these kinds of cultural statues and other cultural relics, many experts have used terrestrial three-dimensional(3D) Laser Scanning (TLS) technology to construct culture relics 3D model. With the development of the photogrammetry, Unmanned Aerial Vehicle (UAV) photogrammetry have made some progress in hardware and software. It is also a good modeling method, but there are few application examples of cultural heritage protection. It adopted these two methods to construct fine 3D model research on the cultural statue- Confucius statue, respectively. Based on Leica C10 3D laser scanner technology, a fine 3D modeling of Confucius statue is constructed based on point cloud data by software Geomagics. Meanwhile, multi-angle images were collected by DJI Phantom 4Pro UAV photogrammetry system, and a fine Confucius statue 3D modeling was constructed by software ContextCapture (CC), which is one kind of popular modeling software based on images. Finally, it used a high precision Total Station (TS) to measure some test points of the research object, the precision of the two fine 3D models constructed by the above two methods were evaluated. The results showed that both methods could achieve the requirements of the cultural statues fine 3D modeling. The precision of the model constructed by TLS was higher than UAV one. While the latter has more obvious advantages in efficiency. During these kinds of cultural statues or relics modeling, according to the flight condition, two methods can be combined to construct fine 3D model to balance the precision and efficiency. It can provide reference for the protection of other cultural relics.