I’m trying to build something to automatically compare control points for mobile laser scanning/lidar to the final point cloud to validate it (and also validate other point clouds that I haven’t collected, but where I have overlapping control).
Generally, for this type of point cloud I control it in another software package using 3D control points mainly, but I do collect extra independent ones for validation that are suitable for comparison of the three different planes. Such as height, along (front/back), or across (left/right) compared to the direction the scanner is moving
In the past I have done this manually in another software package which is quite time consuming. I’d like to make something to do it automatically. The result I need to make are some separate statistics of the differences in easting, northing, height that I can use in reports.
I can work out a way to compare the vertical (By making a clipped cloud around each control point, then a surface, and then comparing the heights to get a difference). I can’t work out how to compare the easting and northing using this method (unless I do a coordinate swap) though I don’t think it is the best way to go about solving my problem.
Does anyone have any ideas on the best way that I could do this?
