五镜头倾斜状态下航空摄影测量的应对策略

在五镜头倾斜状态下,航空摄影地物高度测量容易出现测量精度不足,不能达到标准要求,为此提出五镜头倾斜状态下航空摄影地物高度测量方法。确定五镜头的倾斜状态,对影像重叠度进行优化,得到摄影中心空间位置,建立地物高度测量空间坐标系,规划比例尺与定位精度,最后以坐标系为标准,利用比例尺及定位精度完成对地物高度测量。实验结果表明,在五镜头倾斜状态下使用提出的航空摄影地物高度测量方法,与常规的测量方法相比测量精度提高了53.1%,测量精度达到标准要求,适合于五镜头倾斜状态下航空摄影地物高度测量。

Coping Strategies of Aerial Photogrammetry Under the Condition of Five Lens Tilt

In the state of five-lens inclination, the measurement accuracy of aerial photography ground object height is often inadequate, which can not meet the standard requirements. Therefore, an aerial photography ground object height measurement method in the state of five-lens inclination is proposed. Five-lens tilt state is determined, image overlap degree is optimized, space position of photographic center is obtained, space coordinate system of height measurement of ground objects is established, scale and positioning accuracy are planned. Finally, height measurement of ground objects is completed by scale and positioning accuracy based on coordinate system. The experimental results show that the accuracy of the proposed method is 53.1% higher than that of the conventional method, and the measurement accuracy meets the standard requirements. It is suitable for the aerial photography height measurement under the five-lens tilt state.