The Ground filter passes data through the Point Cloud Library (PCL) ProgressiveMorphologicalFilter algorithm.
ProgressiveMorphologicalFilter is an implementation of the method described in [Zhang2003].
[Zhang2003] | Zhang, Keqi, et al. “A progressive morphological filter for removing nonground measurements from airborne LIDAR data.” Geoscience and Remote Sensing, IEEE Transactions on 41.4 (2003): 872-882. |
{
"pipeline":[
"input.las",
{
"type":"filters.ground"
},
{
"type":"writers.las",
"filename":"output.las"
}
]
}