I'm taking point cloud xyz's from LIDAR and turning them into DEMs, then comparing that DEM, to a DEM of the original 3D CAD Models to see how well the LIDAR is measuring the model for elevation and slope. I'm wondering of any methods to analyse the data in comparison of one another to highlight the inaccuracies of the LIDAR?
I'm thinking visually through the DEM's & Slope map. And also using the raw data, trying to find the difference in Z at corresponding X,Y points? I'm quite new to LIDAR data though, I imagine its going to be messy.