SAGA-GIS Tool Library Documentation (v8.4.1)

Tool Automated Cloud Cover Assessment

Automated Cloud-Cover Assessment (ACCA) for Landsat TM/ETM+ imagery as proposed by Irish (2000). This tool incorporates E.J. Tizado's GRASS GIS implementation (i.landsat.acca).


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputGreenGrid, inputBAND2Landsat band 2 reflectance-
RedGrid, inputBAND3Landsat band 3 reflectance-
NIRGrid, inputBAND4Landsat band 4 reflectance-
SWIRGrid, inputBAND5Landsat band 5 reflectance-
ThermalGrid, inputBAND6Landsat band 6 temperature [Kelvin]-
OutputCloud CoverGrid, outputCLOUD--
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
Grid systemGrid systemBAND6_GRIDSYSTEM--
Apply post-processing filter to remove small holesBooleanFILTER-Default: 1
B56 Composite (step 6)Floating pointB56C-Default: 225.000000
B45 Ratio: Desert detection (step 10)Floating pointB45R-Default: 1.000000
Always use cloud signature (step 14)BooleanCSIG-Default: 1
Bypass second-pass processing, and merge warm (not ambiguous) and cold cloudsBooleanPASS2-Default: 1
Include a category for cloud shadowsBooleanSHADOW-Default: 1

Command-line

Usage: saga_cmd imagery_tools 9 [-BAND2 <str>] [-BAND3 <str>] [-BAND4 <str>] [-BAND5 <str>] [-BAND6 <str>] [-CLOUD <str>] [-FILTER <str>] [-B56C <double>] [-B45R <double>] [-CSIG <str>] [-PASS2 <str>] [-SHADOW <str>]
  -BAND2:<str>  	Green
	Grid, input
  -BAND3:<str>  	Red
	Grid, input
  -BAND4:<str>  	NIR
	Grid, input
  -BAND5:<str>  	SWIR
	Grid, input
  -BAND6:<str>  	Thermal
	Grid, input
  -CLOUD:<str>  	Cloud Cover
	Grid, output
  -FILTER:<str> 	Apply post-processing filter to remove small holes
	Boolean
	Default: 1
  -B56C:<double>	B56 Composite (step 6)
	Floating point
	Default: 225.000000
  -B45R:<double>	B45 Ratio: Desert detection (step 10)
	Floating point
	Default: 1.000000
  -CSIG:<str>   	Always use cloud signature (step 14)
	Boolean
	Default: 1
  -PASS2:<str>  	Bypass second-pass processing, and merge warm (not ambiguous) and cold clouds
	Boolean
	Default: 1
  -SHADOW:<str> 	Include a category for cloud shadows
	Boolean
	Default: 1