The multi-angular-point oblique photogrammetry mark comprises a square bottom plate, and a reflection recognition flat plate is arranged on the square bottom plate. The geometric center of the reflection identification flat plate and the geometric center of the square bottom plate have a predetermined spatial relationship. The identification method comprises the four steps of multi-angular-point photogrammetry mark manufacturing, field survey mark laying, unmanned aerial vehicle field oblique photogrammetry and interior data processing and survey mark image identification. The coordinates of different angular points of the same mark are read after one flight task, redundant observation can be obtained, and the observation precision of point locations can be improved. After multi-period and multi-time flight tasks, change characteristics of point locations in time intervals of different flight periods can be obtained. The photogrammetry mark and the identification method are suitable for the fields of earth surface deformation observation, building displacement, construction monitoring and the like.
一种多角点倾斜摄影测量标志及其识别方法,包括正方形底板,正方形底板上设置反射识别平板。反射识别平板与正方形底板的几何中心具有预先确定的空间关系。其识别方法分为多角点摄影测量标志制作、野外测量标志布设、无人机外业倾斜摄影测量与内业数据处理、测量标志的影像识别四个步骤。一次飞行任务后读取同一标志不同角点的坐标,可获得多余观测,有利于提高点位的观测精度。多期多次飞行任务后,可获得不同飞行期次时间间隔中点位的变化特征。该摄影测量标志及识别方法适用于地表变形观测、建筑物位移及施工监测等领域。
Multi-angular-point oblique photogrammetry mark and identification method thereof
一种多角点倾斜摄影测量标志及其识别方法
2022-03-25
Patent
Electronic Resource
Chinese
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