三维激光扫描在古建筑测绘中的应用

Application of 3D laser scanning in ancient architecture surveying

针对目前古建筑测绘缺少系统的技术流程且变形分析难度大的问题,该文将三维激光扫描技术应用到古建筑保护领域。以光善寺塔为例,制订了可行的测量方案;通过离散点云数据计算多边形重心,提出采用多边形重心法计算古建筑的重心轴线,进而精确计算古建筑的倾斜量和倾斜度,并与传统方法进行对比。结果表明,该方法可以快速、全面地获取观测对象的整体信息,且能够满足古建筑倾斜观测的精度要求,可以为古建筑的修缮提供基础数字化资料。

In view of the lack of systematic technical process and analysis difficulty in ancient architecture survey,this paper applied three-dimensional laser scanning technology to the field of ancient architecture survey.Taking the Guangshan temple as an example,the feasible measurement scheme was worked out.The polygon center of gravity was calculated by using discrete point cloud data,then the center axis and the tilt of the ancient architecture were calculated as well.Comparison results with the traditional method showed that the proposed method could obtain the whole information of the observation object quickly and comprehensively and satisfy the accuracy requirement of ancient architecture tilt observation,which provided basic digital information for the renovation of ancient architecture.