I was confronted with the following challenge that I have tried to solve to no avail, and I was asking if anyone had a viable solution.
I was given 3D CAD file for an extended area of the terrain that only had 3D height contour lines and polylines. Modeling a terrain mesh out of it was easy until but very heavy, and was able to deduce that those contours were not accurate since they were deduced from a NURBS surface modeled from another software application and I have no way to get the original NURBS surface nor the data that was modelled from.
So I was asking, is there a way that I have generate a new terrain mesh with fewer points that does not compromise the accuracy of the new modelling surface, and to be as similar as possible to the original the set of points that was used to generate the reference NURBS surface?