==== FUSION ====

  - merge data
  - polyclip data
  - filter data
  - groundfilter data
  - ground surface create
  - DMTZ ASCII

==== LAS TOOLS ====
  * Lasnoise
  * Blas2Dem
  * Lasground
  * blas2dem
  * in arcmap, we did hilshades and then use rastercalculator