Cultural Heritage Protection of Qi Great Wall Based on Digital Cultural Relics Technology

With the rapid development of informatization and digitalization, the protection of the cultural heritage of Qi Great Wall has also begun to change from information preservation to information management. In this paper, the protection of the cultural heritage of Qi Great Wall based on the digital technology of cultural relics is studied. Firstly, the fast and precise 3D reconstruction technology of Qi Great Wall is analyzed, and the camera is calibrated by using the accurate feature points on the reference objects around Qi Great Wall. Rebuild the 3D feature points of Qi Great Wall, and carry out 3D modeling based on the feature points. Secondly, the construction and digital protection of Qi Great Wall information model are put forward, and the 3D point cloud data on its surface are collected by Farofocus3D phase LiDAR laser scanner. Based on the point cloud data of Qi Great Wall, the BIM model is established on Revit platform to realize 3D information retention and expression of Qi Great Wall. Finally, a digital Qi Great Wall exhibition system is established, which enables users to acquire online knowledge about related services, exhibits, cultural relics, and related documents of Qi Great Wall through the Internet.