Tool 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. 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.
- Author: Alessandro Perego
- Menu: Grid|Filter
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Grid | Grid, input | INPUT | - | - |
| Mask (*) | Grid, input, optional | MASK | Mask's no-data cells will be excluded from 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 | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Angle | Floating point | ANG | [Degree], 0 = horizontal, 90 = vertical | Default: 0.000000 | |
| Radius | Floating point | R | [Cells] | Minimum: 1.000000 Default: 20.000000 | |
| Stripes Distance | Floating point | D | [Cells] | Minimum: 2.000000 Default: 2.000000 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd contrib_perego 5 [-INPUT <str>] [-MASK <str>] [-RESULT3 <str>] [-RESULT1 <str>] [-RESULT2 <str>] [-STRIPES <str>] [-ANG <double>] [-R <double>] [-D <double>] -INPUT:<str> Grid Grid, input -MASK:<str> Mask Grid, input, optional -RESULT3:<str> Destriped Grid Grid, output -RESULT1:<str> Low-pass 1 Grid, output, optional -RESULT2:<str> Low-pass 2 Grid, output, optional -STRIPES:<str> Stripes Grid, output, optional -ANG:<double> Angle Floating point Default: 0.000000 -R:<double> Radius Floating point Minimum: 1.000000 Default: 20.000000 -D:<double> Stripes Distance Floating point Minimum: 2.000000 Default: 2.000000