无人机正射影像中桥梁变形的处理

The Deformation Rectification of Bridge in UAV Orthomosaic

针对无人机数字正射影像中桥梁变形处理这类难题,提出了一种人工构建桥面三角网的桥梁变形处理方法。首先构建桥面三角网来纠正桥梁正射影像,其次利用掩膜方法获取无桥梁的地面正射影像,结合两步骤完成纠正处理。在实际项目中,还可以根据桥梁的复杂程度以及正射影像图比例尺大小来决定运用此方法的部分或全部操作步骤来完成变形处理,比起传统方法更为高效,具有精度高、普适性好等优点。

Aiming at the bridge image deformation in Unmanned Aerial Vehicle（UAV）Orthomosaic,a bridge deformation rectification method by artificial Mesh is proposed.Firstly,building mesh of deck to rectify bridge DOM,the using mask method to get bridgeless Digital Orthophoto Map（DOM）.Combining the two steps to complete the rectification.In the actual project,It is also possible to determine some or all of the operating steps using this method based on the complexity of the bridge and the scale of the DOM.the method is more efficient than the traditional method,with the advantages of high precision and good adaptability.