为了探究像控点空间分布对DEM建模精度的影响,利用无人机摄影测量技术对6.25 hm2丘陵区域进行DEM建模实验。通过在刺点过程中采用多种像控点平面和高程布设方式来研究DEM建模精度与像控点空间分布之间的关系。结果表明,在同等实验条件下,“边缘+中心”的平面布设方式和“高程梯次组合”的高程布设方式可获得更高的建模精度。实际应用中可参考研究结果优化像控点的空间布设方案。
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