DTM Filter (slope-based)
grid_filter
ParameterRaster|INPUT|Grid to filter|False
ParameterNumber|RADIUS|Search Radius|1|None|2
ParameterNumber|TERRAINSLOPE|Approx. Terrain Slope|None|None|30
ParameterBoolean|STDDEV            |Use Confidence Interval|True
OutputRaster|GROUND|Bare Earth
OutputRaster|NONGROUND|Removed Objects
