pdal translate ^
   c:/Users/hobu/PDAL/exercises/analysis/ground/CSite1_orig-utm.laz ^
   -o c:/Users/hobu/PDAL/exercises/analysis/ground/denoised-ground-only.laz ^
   outlier smrf range ^
   --filters.outlier.method="statistical" ^
   --filters.outlier.mean_k=8 ^
   --filters.outlier.multiplier=3.0 ^
   --filters.smrf.ignore="Classification[7:7]" ^
   --filters.range.limits="Classification[2:2]" ^
   --writers.las.compression=true --verbose 4
