求翻译：采集的三维点云数据经过拼接和合并后，进行数据预处理剔除粗差数据，获得滑坡监测体地面高程数据，用于建立高精度的DEM模型。是什么意思？

3D point cloud data collected by the splicing and after the merger, the data pre-processing to eliminate gross errors in data, landslide monitoring body surface elevation data used to establish the precision of the dem model.

Acquisition of the 3D point cloud data after stitching and after the merger, for data pre-processing the data, eliminating rough for landslide monitoring body ground elevation data, used to establish a high-precision DEM model.

The gathering three dimensional spot cloud data after splicing and the merge, carries on the data pretreatment to reject the thick difference data, obtains the landslide monitor body ground elevation data, uses in establishing the high accuracy the DEM model.

After stitching and three-dimensional point cloud data collected after the merger, the removal of gross data preprocessing data, access to ground elevation data of landslide monitoring, used for high-precision DEM model.

正在翻译，请等待...