倾斜摄影测量技术在拆迁测绘中的应用

Application of oblique photogrammetric technique in demolition surveying and mapping

传统拆迁测绘方法通过外业入户调查测量房屋及附属物边长,内业测算面积,难以在不增加成本的情况下提速增效并满足不断加速推进的城市更新工作。无人机倾斜摄影测量技术作为近年测绘领域兴起的高新技术,可以自动生成实景三维模型,并在此基础上生产大比例尺地形图,采集地物尺寸及结构要素,简化外业测量工作。本文提出了基于倾斜摄影测量技术的旧村拆迁测绘模式,并在北山旧村拆迁项目中验证了该模式的可行性。试验结果表明,地形图、地物尺寸和面积精度符合规范要求,生产效率得到明显提高。

The conventional method of demolition surveying and mapping measures sides of houses and their appurtenance by outdoor household surveys and then calculates house area within indoor work. However, it is difficult to speed up and increase efficiency without increasing costs to meet the constantly accelerating urban renewal. As an emerging technology in recent years in the international surveying and mapping field, unmanned aerial vehicle (UAV) oblique photogrammetric technique can generate live 3D model automatically, produce large-scale topographic map and collect the sizes and structural elements of ground object based on the model, thus simplifying field work. This article puts forward a new surveying and mapping pattern for old villages demolition based on oblique photogrammetric technique, and tests the validity of this pattern in Beishan village demolition project. The experimental results show that the precision of topographic map, sizes of ground object and area all fit for corresponding criteriaj, and the production efficiency has been improved significantly.