地面三维激光扫描技术与轻型无人机航摄在古塔修缮中的应用

Application of ground 3D laser scanning technology and light UAV aerial photography in the repair of the ancient pagoda

针对传统古塔修缮前后测绘成本高、获得的监测数据不全面等问题,本文利用地面三维激光扫描技术,获取某古塔修缮前后测量数据,对古塔偏移角度及相邻两层偏移角度、旋转角度进行计算。地面三维激光数据全面记录了修缮前后塔体的状况,摸清了修缮前后塔体相邻两层偏移量,为塔体的稳定性评估提供了精准的测绘数据支撑。轻型无人机采集塔体影像数据,对塔体修缮过程中遗留的问题以及塔体修缮之后仍存在的破损区域进行了摸底,为塔体的进一步修缮明确目标。通过这两种技术在具体案例中的应用,为测绘技术在古塔保护领域中的应用提供了新的思路。

Aiming at the problems of high cost of surveying and mapping during repairment of traditional ancient pagoda and incomplete monitoring data,this paper uses ground 3D laser scanning technology to obtain survey data,calculates the offset angle of the ancient pagoda,the offset angle and rotation angle of two adjacent layers.Ground 3D laser scanning data comprehensively records the condition of the pagoda before and after repair,identifies the displacement of two adjacent layers of the pagoda before and after repair,which provides accurate surveying data support for the stability assessment of the pagoda.The light UAV is used to collect the image data of the pagoda,and the problems left in the process of the pagoda repair and the damaged area still existed after the tower body repair are found out,so as to clarify the target for the further repair of the pagoda.The application of these two techniques in specific cases provides a new idea for the application of surveying and mapping technology in the field of ancient pagoda protection.