SAGA-GIS Module Library Documentation (v2.2.2)

Module Watershed Segmentation

Watershed segmentation.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputGridGrid (input)GRID--
OutputSegmentsGrid (output)SEGMENTS--
Seed PointsShapes (output)SEEDS--
Borders (*)Data Object (optional output)BORDERS--
OptionsOutputChoiceOUTPUTThe values of the resultant grid can be either the seed value (e.g. the local maximum) or the enumerated segment id.Available Choices:
[0] Seed Value
[1] Segment ID
Default: 1
MethodChoiceDOWNChoose if you want to segmentate either on minima or on maxima.Available Choices:
[0] Minima
[1] Maxima
Default: 1
Join Segments based on Threshold ValueChoiceJOINJoin segments based on threshold value.Available Choices:
[0] do not join
[1] seed to saddle difference
[2] seeds difference
Default: 0
ThresholdFloating pointTHRESHOLDSpecify a threshold value as minimum difference between neighboured segments.Minimum: 0.000000
Default: 0.000000
Allow Edge Pixels to be SeedsBooleanEDGE-Default: 1
BordersBooleanBBORDERSCreate borders between segments as new grid.Default: 0
(*) optional

Command-line

Usage: saga_cmd imagery_segmentation 0 [-GRID <str>] [-SEGMENTS <str>] [-SEEDS <str>] [-BORDERS <str>] [-OUTPUT <str>] [-DOWN <str>] [-JOIN <str>] [-THRESHOLD <str>] [-EDGE <str>] [-BBORDERS <str>]
  -GRID:<str>     	Grid
	Grid (input)
  -SEGMENTS:<str> 	Segments
	Grid (output)
  -SEEDS:<str>    	Seed Points
	Shapes (output)
  -BORDERS:<str>  	Borders
	Data Object (optional output)
  -OUTPUT:<str>   	Output
	Choice
	Available Choices:
	[0] Seed Value
	[1] Segment ID
	Default: 1
  -DOWN:<str>     	Method
	Choice
	Available Choices:
	[0] Minima
	[1] Maxima
	Default: 1
  -JOIN:<str>     	Join Segments based on Threshold Value
	Choice
	Available Choices:
	[0] do not join
	[1] seed to saddle difference
	[2] seeds difference
	Default: 0
  -THRESHOLD:<str>	Threshold
	Floating point
	Minimum: 0.000000
	Default: 0.000000
  -EDGE:<str>     	Allow Edge Pixels to be Seeds
	Boolean
	Default: 1
  -BBORDERS:<str> 	Borders
	Boolean
	Default: 0