Tool Name	Destriping with Mask
Tool ID	6
Library ID	contrib_perego
Version	1.0
Author(s)	Alessandro Perego

Description

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 ry[1] Oimoen (2000). With destriping 2 you can choose a range of value (min-max) from the input grid and a range of value (Mask min - Mask max) from a mask grid to select the target cells.

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. online

Perego, A. (2009): SRTM DEM destriping with SAGA GIS: consequences on drainage network extraction. alsperGIS - Dati geografici e software per lo studio e la rappresentazione del territorio. online

Parameters

Name	Type	Identifier	Description	Constraints
Input
Grid	grid, input	INPUT
Mask	grid, input	MASK	Mask used to select cells for processing
Output
Destriped Grid	grid, output	RESULT3
Low-pass 1	grid, output, optional	RESULT1	Step 1: low-pass of stripe
Low-pass 2	grid, output, optional	RESULT2	Step 2: low-pass between stripe and its surroundings
Stripes	grid, output, optional	STRIPES	The difference between destriped and original grid
Options
Angle	floating point number	ANG	[Degree], 0 = horizontal, 90 = vertical	Default: 0.000000
Radius	floating point number	R	[Cells]	Minimum: 1.000000 Default: 20.000000
Stripes Distance	floating point number	D	[Cells]	Minimum: 2.000000 Default: 2.000000
Minimum	floating point number	MIN		Default: -10.000000
Maximum	floating point number	MAX		Default: 10.000000
Mask Minimum	floating point number	MMIN		Default: -10000.000000
Mask Maximum	floating point number	MMAX		Default: 10000.000000