filters.dem¶
filters.dem uses a raster to keep data within a range of the raster cell. For example, atmospheric or MTA noise in a scene can be quickly removed by keeping all data within 100m above and 20m below a pre-existing elevation model.
Example #1¶
{
"pipeline":[
{
"type":"filters.dem",
"raster":"dem.tif",
"limits":"Z[20:100]"
}
]
}
Options¶
- limits
A Range that defines the dimension and the magnitude above and below the value of the given dimension to filter.
The following example would keep all
Z
point cloud values that are within 100 units above and 20 units below the elevation model value at the givenX
andY
value.Z[20:100]
- raster
- GDAL readable raster data to use for filtering.
- band
- GDAL Band number to read (count from 1) [Default: 1]