Research And Application Of 3D Great Wall Modeling Technology Based On Drone Tilt Photography

With the increasing maturity of drone photogrammetry,the method of constructing three-dimensional models based on oblique photogrammetry is playing a huge role in archeological reproduction and other fields.Oblique photogrammetry uses multiple cameras to capture images of the target from multiple angles,and extracts texture information from the side of the target.After processing with photogrammetry software,a real-life 3D model with real texture information can be generated,which has been widely used in various fields.After a census of the Zhangjiakou Great Wall site,there are more than 1,400 kilometers of Great Wall in Zhangjiakou.Investigations show that the Great Wall sites in Zhangjiakou are scattered and diverse,and human damage and natural weathering are increasing.Therefore,it is imperative to protect the Great Wall sites in Zhangjiakou.In order to effectively protect the Great Wall and better display the Great Wall,the main goal of this research is to use the drone tilt photography technology to build a 3D model of part of the Great Wall in the Chongli District of Zhangjiakou,and then apply it to the 3D Great Wall geographic information system to enable the management of the Zhangjiakou Great Wall Through this system,the department realizes the three-dimensional display,information query,and spatial analysis of the Great Wall.At the same time,it displays more details of the Great Wall to the society in a three-dimensional manner,which has a guiding role and practical value for the protection and research of the Great Wall.This article first studies the modeling method based on the tilt photography of the drone,and then relies on the drone platform to obtain the tilted image of the ancient Great Wall in Chongli District of Zhangjiakou as experimental data.Complexity analysis,and then using artificial interaction to optimize the performance and effect repair of the 3D Great Wall model,increase the fluency and stability of the 3D model in GIS,and finally combine the latest 3D geographic information technology on the basis of 3D visualization Spatial data analysis,combined with WebGIS technology,designed and implemented the 3D Great Wall Geographic Information System.