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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 flow of the ancient building surveying and mapping and the difficulty of deformation analysis, this paper applies the 3D laser scanning technology to the protection of ancient buildings. Taking Guangshan Temple Tower as an example, a feasible measurement scheme was developed. By calculating the center of gravity of polygons using discrete point cloud data, the center of gravity axis of ancient buildings was calculated by polygamy centroid method, and then the incline and inclination of ancient buildings were calculated precisely. comparing. The results show that this method can get the overall information of observation objects quickly and comprehensively, and can satisfy the precision requirements of ancient building tilt observation. It can provide basic digital information for the restoration of ancient buildings.