This task calculates the emissivity and temperature values from thermal infrared radiance data using a fixed emissivity value.
Example
e = ENVI()
File = Filepath('qb_boulder_msi', Subdir=['data'], $
Root_Dir=e.Root_Dir)
Raster = e.OpenRaster(File)
Task = ENVITask('EmissivityFromNormalization')
Task.INPUT_RASTER = Raster
Task.Execute
DataColl = e.Data
DataColl.Add, Task.OUTPUT_RASTER
DataColl.Add, Task.TEMPERATURE_RASTER
View = e.GetView()
Layer = View.CreateLayer(Task.OUTPUT_RASTER)
Layer = View.CreateLayer(Task.TEMPERATURE_RASTER)
Syntax
Result = ENVITask('EmissivityFromNormalization')
Input parameters (Set, Get): DATA_SCALE, EMISSIVITY_VALUE, INPUT_RASTER, OUTPUT_RASTER_URI, TEMPERATURE_RASTER_URI
Output parameters (Get only): OUTPUT_RASTER, TEMPERATURE_RASTER
Parameters marked as "Set" are those that you can set to specific values. You can also retrieve their current values any time. Parameters marked as "Get" are those whose values you can retrieve but not set.
Input Parameters
DATA_SCALE (optional)
Specify the scale factor applied to the data, prior to calculating thermal corrections. This converts the input data to units of W/m2/μm/sr. Valid values are:
EMISSIVITY_VALUE (required)
Specify the assumed emissivity value. The default value is 0.950000.
INPUT_RASTER (required)
Specify an input raster to process.
OUTPUT_RASTER_URI (optional)
Specify a string with the fully qualified filename and path of the associated OUTPUT_RASTER.
- If you do not specify this parameter, or set it to an exclamation symbol (!), ENVI creates a temporary file.
- If you set it to the hash symbol (#), ENVI creates a file in the temporary directory, but this file will not be deleted when ENVI closes.
TEMPERATURE_RASTER_URI (optional)
Specify a string with the fully qualified filename and path of the associated TEMPERATURE_RASTER. If you do not specify this parameter, or set it to an exclamation symbol (!), a temporary file will be created.
Output Parameters
OUTPUT_RASTER
This is a reference to the output raster of filetype ENVI.
TEMPERATURE_RASTER
This is a reference to the output raster of filetype ENVI. The output values are in units of kelvin degrees.
Methods
Execute
Parameter
ParameterNames
Properties
DESCRIPTION
DISPLAY_NAME
NAME
REVISION
TAGS
Version History
See Also
ENVITask, EmissivityFromAlphaResiduals Task, EmissivityFromReferenceChannel Task,
ThermalAtmosphericCorrection Task, Masking Support in ENVITasks