RGBToHSIRaster Task
This task creates a new raster that has been transformed from a red/green/blue (RGB) to hue/saturation/intensity color space.
The virtual raster associated with this task is ENVIRGBToHSIRaster.
Example
; Start the application
e = ENVI()
; Open an input file
File = Filepath('qb_boulder_msi', Subdir=['data'], $
Root_Dir=e.Root_Dir)
Raster = e.OpenRaster(File)
; Process a spectral subset
Subset = ENVISubsetRaster(Raster, BANDS=[2,1,0])
; Get the task from the catalog of ENVITasks
Task = ENVITask('RGBtoHSIRaster')
; Define inputs
Task.INPUT_RASTER = Subset
; Run the task
Task.Execute
; Get the collection of data objects currently available in the Data Manager
DataColl = e.Data
; Add the output to the Data Manager
DataColl.Add, Task.OUTPUT_RASTER
; Display the result
View = e.GetView()
Layer = View.CreateLayer(Task.OUTPUT_RASTER)
Syntax
Result = ENVITask('RGBtoHSIRaster')
Input properties (Set, Get): INPUT_RASTER, OUTPUT_RASTER_URI
Output properties (Get only): OUTPUT_RASTER
Properties marked as "Set" are those that you can set to specific values. You can also retrieve their current values any time. Properties marked as "Get" are those whose values you can retrieve but not set.
Methods
This task inherits the following methods from ENVITask:
Properties
This task inherits the following properties from ENVITask:
This task also contains the following properties:
INPUT_RASTER (required)
Specify the input ENVIRaster. It must have three bands in the following order: Red, Green, and Blue. If your original raster has more than three bands, or if it has red/green/blue bands that are not in the correct order, use ENVISubsetRaster to create a spectral subset for input to ENVIRGBToHSIRaster. Use the BANDS property to define a three-band subset, using zero-based band numbers.
OUTPUT_RASTER
This is a reference to the output raster of filetype ENVI.
OUTPUT_RASTER_URI (optional)
Specify a string with the fully qualified filename and path to export the associated OUTPUT_RASTER.
- If you set this property to an asterisk symbol (*), the output raster will be virtual and not written to disk.
- If you do not specify this property, or set it to an exclamation symbol (!), a temporary file will be created.
Version History
|
ENVI 5.3. 2 |
Introduced |
|
ENVI 5.5 |
OUTPUT_RASTER_URI now supports '*', which allows OUTPUT_RASTER to be virtual output. |
API Version
4.2