Accuracy Analysis of Control Point Distribution for Different Terrain Types on Photogrammetric Block
Accuracy Analysis of Control Point Distribution for Different Terrain Types on Photogrammetric Block
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DOI：
10.17559/tv-20160801140840
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Guntel;H. Karabork;L. Karasaka
中科院分区：
文献类型：
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作者：
A. Guntel;H. Karabork;L. Karasaka
由于数字正射影和正射影地图越来越多地被用作许多研究的基础，近年来对这类产品的需求逐渐增加。正射影像图的制作速度比传统地形图更快，成本也更低，因此目前正射影像图的需求量很大。通过航空摄影或卫星影像获得的正射影像图的制作精度一直是一个重要的研究课题。地面控制点的数量和分布对空中三角测量的精度有重要影响。因此，作为最终产品的正射影像图的精度与地块内地面控制点的数量和分布有关。本研究旨在通过不同的GNSS/IMU系统，研究地面控制点和检查点的数量和分布对空中三角测量精度的影响。根据地面控制和检查点在不同组合和数量的矩形块内的分布情况，设计了五种不同的配置。然后，在不同类型的地形，如林地、住宅区和农业区，对这些配置进行了测试。研究的目的是在这种地形分类的基础上，确定适合各种不同系统的最理想测地线结构和最精确的摄影测量三角测量平差。根据ASPRS准确度标准对结果进行评价。
Since the digital orthoimage and orthomosaic maps have come to be used more and more as the fundamental basis for many studies, the demand for such products has been gradually increasing in the recent years. Owing to the fact that they can be produced more rapidly and cheaper than the traditional topographic maps, the orthoimage maps are currently much in demand. The production accuracy of the orthoimage maps, obtained through aerial photographs or satellite images, has been an important research topic. The number and distribution of the ground control points have a significant bearing on the accuracy of aerial triangulation. Therefore, the accuracy of the orthoimage maps, being the end products, is related to the number and distribution of the ground control points within the block. This study has aimed to study the influence of the number and distribution of ground control points and check points on the accuracy of aerial triangulation by using different GNSS/IMU systems. Five different configurations have been designed depending on the distribution of the ground control and check points within rectangular shaped blocks in different combinations and numbers. Such configurations were then tested in different types of terrain such as forest lands, residential and agricultural areas. The objective of the study was to identify the most ideal geodesic structure and the most accurate photogrammetric triangulation adjustment suitable for various different systems based on such terrain classification. The results were evaluated based on the ASPRS accuracy standards.