We have created multiple merged projects from two to three flights and always when we merge them there is a great amount of “noise” introduced to the DSM. This noise is not visible in a single project only when the projects are merged together. This makes the DSM quite useless and we have no idea how to resolve this or what causes this noise. The area is only partly noisy and the outlines of the noisy areas are very sharp and we are quite sure that the noise is only introduces in the merged project and not in the initial project.
Has anyone here experienced any problem like this before and does anyone know what the could be causing this?
The noise causes even terrain to look extremely rough. This noise is only visible in the DSM but not the point cloud or the mesh. This noise is very well visible on the orthomosaic as well. Therefore that makes me belive that this noise is introdcued in the third processing step.
Any help appreciated!