应用霍夫变换的航带自动构建技术  

Automatic construction technology of strip using Hough transformation

作　　者：佘毅 李冲 李昊霖 SHE Yi;LI Chong;LI Haolin(Sichuan Quality Supervision and Testing Center of Surveying and Mapping Product,Chengdu 610041,China)

机构地区：[1]四川省测绘产品质量监督检验站,成都610041

出　　处：《测绘科学》2020年第11期101-106,共6页Science of Surveying and Mapping

基　　金：四川省测绘地理信息局科技支撑项目(J2017ZC07);国家时空信息基础设施建设与服务关键技术标准研究项目(2016YFF0201300)。

摘　　要：针对当前航空摄影测量的航带构建方法自动化程度不高,需要人工干预的问题,该文提出一种利用机载POS点坐标自动构建航带的方法。该方法通过Hough变换检测直线的原理检测航空摄影时测图航线和构架航线的飞行方向,采用POS点带有符号的点到直线距离和POS点包含的时间信息,分割POS点到不同航带并对各条航带排序,利用航带内POS点相对其重心坐标的角度与距离,恢复航带内POS点的位置关系。实验证明,该文提出的航带构建方法自动化程度更高、兼容性更强,能够提高航空摄影成果质量检查与数据处理的效率与可靠性。Aiming at the problem that the current strip construction method was not highly automated and required manual intervention,a method for automatically constructing the strip using the POS points was proposed.The method detected the mapping strip and controled strip flight direction of aerial photography by the principle of Hough transformation detection line,and used the point-to-straight distance with symbols and the GPS time to group the POS points,and sorted the strips.The method restored the positional relationship of POS points in the strip by using the angle and distance relative to its center of gravity coordinate.The experiment proved that the method of constructing the strip proposed in this paper was more automated and more compatible,which could improve the efficiency and reliability of quality inspection and data processing of aerial photography products.

关 键 词：霍夫变换 定位定姿系统 航带构建 航空摄影 

分 类 号：P237[天文地球—摄影测量与遥感]