DataSet of Can through-water Structure-from-Motion photogrammetry characterize topographic statistics of gravel-bed surfaces?

1. Errors in the statistics of underwater topographies were quantified by experiment.2. The moments of underwater bed surfaces were precisely captured at low flows.3. The outcomes of second-order structural functions (SSF) showed large errors.4. The general shapes of 2D contours of SSF were well captured.

1. 通过实验量化了水下地形统计特征的误差。
2. 在低流速工况下精准捕捉到了水下床面的统计矩特征。
3. 二阶结构函数（second-order structural functions, SSF）的计算结果存在较大误差。
4. 二阶结构函数的二维等值线整体形态得到了较好的捕捉。