Tool Watershed Segmentation (ViGrA)
Note that the watershed algorithm usually results in an oversegmentation (i.e., too many regions), but its boundary localization is quite good.
Based on the code example "watershed.cxx" by Ullrich Koethe.
References
- Author: O.Conrad (c) 2009
- Menu: Imagery|Segmentation
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Input | Grid (input) | INPUT | - | - |
| Output | Segmentation | Grid (output) | OUTPUT | - | - |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Width of gradient filter | Floating point | SCALE | - | Minimum: 0.000000 Default: 1.000000 | |
| RGB coded data | Boolean | RGB | - | Default: 0 | |
| Edges | Boolean | EDGES | - | Default: 0 |
Command-line
Usage: saga_cmd imagery_vigra 4 [-INPUT <str>] [-OUTPUT <str>] [-SCALE <double>] [-RGB <str>] [-EDGES <str>] -INPUT:<str> Input Grid (input) -OUTPUT:<str> Segmentation Grid (output) -SCALE:<double> Width of gradient filter Floating point Minimum: 0.000000 Default: 1.000000 -RGB:<str> RGB coded data Boolean Default: 0 -EDGES:<str> Edges Boolean Default: 0