Why colmap？

[heandrea]

请问为什么对图片进行COLMAP操作呢？初始化的点云不是由GIM得到的吗？（Why perform COLMAP operations on the images? Isn't the initial point cloud obtained from GIM?）

[prstrive]

We directly use the camera pose provided by existing datasets, and we do not need the initialization of SFM points.