TIN Refinement (or Delaunay Triangulation Refinement) allows you to increase the density of DTM points by adding a centroid point to each TIN triangle, this task can be done automatically or manually.
Automatic TIN Refinement will densify the TIN points by interpolate centroid point on every TIN triangle and then regenerate the TIN surface, the process will iterate according to the desired number of iterations. To avoid “too dense” point on some area, you can ask to skip small triangle by defining minimum triangle size to process.
Please note that Delaunay Refinement is a heavy calculation process, higher number of iteration will increase calculating times and perhaps will make your device crash or running out of memory.
The following video explains how to perform Automatic TIN Refinement on UTM Geo Map APP:
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