Module Destriping

Destriping filter removes straight parallel stripes in raster data. It uses two low-pass filters elongated in the stripes direction; the first one is 1 pixel unit wide while the second one is wide as the striping wavelength. Their difference is the striping error which is removed from the original data to obtain the destriped DEM. This method is equivalent to that proposed by Oimoen (2000).

References:
- Oimoen, M.J. (2000): An Effective Filter For Removal Of Production Artifacts. In U.S. Geological Survey 7.5-Minute Digital Elevation Models. Proceedings of the Fourteenth International Conference on Applied Geologic Remote Sensing, 6-8 November, Las Vegas, NV.

- Peregro, A. (2009): SRTM DEM destriping with SAGA GIS: consequences on drainage network extraction. online.

Author: Alessandro Perego
Menu: Grid|Filter

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Input	Grid (input)	`INPUT`	This must be your input data of type grid.	-
Output	Destriped Grid	Grid (output)	`RESULT3`	New grid filtered with the destriping1 module	-
	Low-pass 1	Grid (output)	`RESULT1`	Step 1: low-pass of stripe	-
	Low-pass 2	Grid (output)	`RESULT2`	Step 2: low-pass between stripe and its surruondings	-
Options	Grid system	Grid system	`PARAMETERS_GRID_SYSTEM`	Grid system	-
	Angle (in degrees)	Floating point	`ANG`	0 is horizontal, 90 is vertical.	Default: 0.000000
	Radius	Floating point	`R`	-	Default: 10.000000
	Stripes distance	Floating point	`D`	-	Default: 2.000000

Command-line

Usage: saga_cmd contrib_perego 5 [-INPUT <str>] [-RESULT3 <str>] [-RESULT1 <str>] [-RESULT2 <str>] [-ANG <double>] [-R <double>] [-D <double>]
  -INPUT:<str>  	Input
	Grid (input)
  -RESULT3:<str>	Destriped Grid
	Grid (output)
  -RESULT1:<str>	Low-pass 1
	Grid (output)
  -RESULT2:<str>	Low-pass 2
	Grid (output)
  -ANG:<double> 	Angle (in degrees)
	Floating point
	Default: 0.000000
  -R:<double>   	Radius
	Floating point
	Default: 10.000000
  -D:<double>   	Stripes distance
	Floating point
	Default: 2.000000