基于倾斜摄影的三维测图技术研究

近年来,随着无人机技术、机载定位技术、图像处理技术的快速发展,倾斜摄影测量技术已广泛应用于1∶1000大比例尺地形图测绘中。但由于各项技术限制,普通的无人机航空摄影测量难以满足1∶500大比例尺地形图测图。因此,本文以倾斜摄影测量技术为基础,从像控密度、模型分辨率、测图方式3方面展开研究,提出了一种适用于城镇1∶500大比例尺地形图的倾斜测图方法。试验结果表明,文成县大比例尺地形图的成果平面精度可达0.059 m,高程精度可达0.064 m,精度情况良好,对以后采取此种方法进行测绘具有一定的借鉴作用。

The research of 3D mapping technology on oblique photogrammetric technique

In recent years, with the rapid development of UAV technology, airborne positioning technology and image processing technology, tilt photogrammetry technology has been widely used in 1：1000 large-scale topographic mapping. However, due to various technical limitations, ordinary UAV aerial photogrammetry can not meet 1：500 large-scale topographic mapping. Based on this, this paper studies tilt photogrammetry in three aspects: image control density, model resolution and mapping method, and proposes a tilt mapping method fitting for 1：500 scale topographic map of cities and towns. The large-scale topographic map of Wencheng county obtained from the evaluation test shows that the plane accuracy of the result can reach 0.059 m, the elevation accuracy can reach 0.064 m, and the accuracy is in good condition, which play a certain guiding role in the future when taking this method for surveying and mapping.