James_et_al_2020_BdA_60m_10degr_2

James et al. (2020) - Mitigating systematic error in topographic models for geomorphic change detection: Accuracy, precision and considerations beyond off-nadir imagery<br>UAV-collected image dataset and associated image coordinates of GCP observations for surveys of la Borgne d'Arolla. See paper for details.<br>60m_10degr_2 : UAV image data<br>File formats for image observations:.xml file contains GCP image observations (and other data) exported from Photoscan v1.4.2. Can be imported back into PhotoScan (or Metashape) using Import -&gt; Markers.<br>.txt file contains GCP image observations as pixel coordinates given with respect to an origin in the top left image corner (tab-delimited text file). Note that the .txt file will contain a smaller number of observations than the .xml file, because only GCP observations that have been included in the bundle adjustment have been converted to .txt. The .xml files contain some additional unused observations (shown as grey furled flags in PhotoScan).

James等人（2020）——《用于地貌变化检测的地形模型系统性误差缓解：精度、精确度及非天底影像之外的考量因素》<br>本数据集为拉博尔纳·达罗拉（la Borgne d'Arolla）测量所用的无人机采集影像数据集，以及配套的地面控制点（Ground Control Point, GCP）影像观测坐标数据，详细信息请参阅该研究论文。<br>60m_10degr_2：无人机影像数据<br>影像观测数据的文件格式说明如下：.xml 文件存储从Photoscan v1.4.2导出的地面控制点影像观测数据（及其他关联数据），可通过PhotoScan（或Metashape）的「导入→标记点」功能重新导入该文件。<br>.txt 文件为制表符分隔文本文件，以图像左上角为坐标原点，存储地面控制点影像观测的像素坐标。需注意，.txt 文件中的观测数据量少于.xml 文件，因为仅将已参与光束法平差（bundle adjustment）的地面控制点观测数据转换为了.txt 格式。.xml 文件中还包含部分未使用的观测数据（在PhotoScan中显示为灰色折叠标记旗）。