NAME
pkfilterdem - Filter digital elevation model raster datasets
SYNOPSIS
FCpkfilterdemF[0] FC-iF[0] input FC-oF[0] output [options] [advanced options]
DESCRIPTION
pkfilterdem can be used to filter digital elevation models. It is typically used after the utility pklas2img(1) to create a digital terrain model. The default filter operation is the progressive morphological filter ⟨http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=1202973&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D1202973⟩ .
OPTIONS
- FC-iF[0] filename, FC--inputF[0] filename
-
input image
- FC-oF[0] filename, FC--outputF[0] filename
-
output classification image
- FC-fF[0] filter, FC--filterF[0] filter
-
post processing filter: vito, etew_min, promorph (progressive morphological filter), open, close).
- FC-dimF[0] maxsize, FC--dimF[0] maxsize
-
maximum filter kernel size
- FC-otF[0] type, FC--otypeF[0] type
-
Data type for output image ({Byte / Int16 / UInt16 / UInt32 / Int32 / Float32 / Float64 / CInt16 / CInt32 / CFloat32 / CFloat64}). Empty string: inherit type from input image
- FC-ofF[0] format, FC--oformatF[0] format
-
Output image format (see also gdal_translate(1)).
- FC-ctF[0] colortable, FC--ctF[0] colortable
-
color table (file with 5 columns: id R G B ALFA (0: transparent, 255: solid)). Use none to omit color table
- FC-nodataF[0] value, FC--nodataF[0] value
-
nodata value
- FC-vF[0] level, FC--verboseF[0] level
-
verbose mode if > 0
Advanced options
- FC-circF[0], FC--circularF[0]
-
circular disc kernel for dilation and erosion
- FC-stF[0] threshold, FC--stF[0] threshold
-
slope threshold used for morphological filtering. Use a low values to remove more height objects in flat terrains
- FC-htF[0] threshold, FC--htF[0] threshold
-
initial height threshold for progressive morphological filtering. Use low values to remove more height objects. Optionally, a maximum height threshold can be set via a second argument (e.g., FC-htF[0] 0.2 FC-htF[0] 2.5 sets an initial threshold at 0.2 m and caps the threshold at 2.5 m).
- FC-minchangeF[0] number, FC--minchangeF[0] number
-
Stop iterations when no more pixels are changed than this threshold.