I am having problems generating accurate ground contours. the site is a rectangular shape with 12 GCPs (4x3 equally spaced) within the area (all points were shot with a survey grade GPS). I have gone through the process of the rayCloud editor but 4-5 of the GCPs have an elevation error of more than 0.5 feet. Along with having issues with several GCPs, in the rayCloud, there are hundreds of points 30-40 feet below and above the ground but only in the street paved with asphalt while the dirt interior of the site is as it should be. I have tried cleaning up the point cloud by putting out of place points in the deleted category as well as changing GCPs with elevation errors more than 0.5 feet to checkpoints. So what I am asking, is there anything I am doing wrong? I need survey grade ground contours and have tried everything I have ever seen in a webinar or how-to video. Any help anyone could offer would be greatly appreciated. Thank you.
Phantom 3 Advanced was used to take pictures of site
64 pictures in total @ 150 ft