comparing two DEMs

Question

Hi, i have two Lidar las files, one is original let's say with X points. And the other is copy of the first las file but with Y points, where Y is less than X. Now, i wanted to compare how the Digital Elevation Models of these two las files vary... I wanted to get information like RMSE, standard deviation, etc... I would appreciate, if anyone could tell me what softwares, or ways to get the comparison info... Thanks!

Answer 1

check this link for a good start on lidar:

http://www.lidarbasemaps.org/

I don't think anything free is going to do everything you want, so be preapared to spend...