Image input in :guilabel:`SCP` is named :guilabel:`band set`. This tab allows for the definition of one or multiple :guilabel:`band sets` to be used as input for classification and other tools.
:guilabel:`Band sets` are identified by numbers. The :guilabel:`active band set` (i.e. the one selected in :ref:`band_set_definition`) is used as input for several tools in :ref:`SCP_dock` and the :ref:`working_toolbar`. Other :guilabel:`SCP` tools allow for the selection of :guilabel:`band set` numbers.
The :guilabel:`Band set` definition is saved with the QGIS project.
Tip
Information about APIs of this tool in Remotior Sensus at this link .
A :guilabel:`band set` is basically a list of bands defined as the following table.
| Band name | Center wavelength | Multiplicative Factor | Additive Factor | Wavelength unit | Path | Date |
|---|---|---|---|---|---|---|
| name of the band (it cannot be edited) | center of the wavelength of the band | multiplicative rescaling factor | additive rescaling factor | wavelength unit | relative path of the raster | image acquisition date |
It is possible to add to the :guilabel:`active band set` one or more bands already loaded in QGIS, or select files that are not loaded. A :guilabel:`Date` can be assigned to a :guilabel:`band set` which can be later used in other tools to select :guilabel:`band sets` by date. Also, a :guilabel:`Root directory` for band paths can be defined, which can be useful to create projects with relative paths.
The following tools are available.
| Tool symbol and name | Description |
|---|---|
 |
open file explorer and add raster files (preferably single band raster) to the :guilabel:`active band set` |
 |
open a window to select rasters already loaded in QGIS and add them to the :guilabel:`active band set` |
 |
move highlighted bands upward |
 |
move highlighted bands downward |
 |
sort automatically bands by name, giving priority to the ending numbers of name |
 |
remove highlighted bands from the :guilabel:`active band set` |
 |
clear all bands from :guilabel:`active band set` |
 |
import a previously saved :guilabel:`active band set` from file |
 |
export the :guilabel:`active band set` to a file |
It is possible to define a multiplicative rescaling factor and additive
rescaling factor for each band (for instance using the values in
Landsat metadata), which are used on the fly
(i.e. pixel value = original pixel value * multiplicative rescaling factor + additive rescaling factor)
during the processing.
The :guilabel:`Center wavelength` of bands should be defined in order to use several functions of :guilabel:`SCP`. If the :guilabel:`Center wavelength` of bands is not defined, the band number is used and some :guilabel:`SCP` tools will be disabled.
These tools allow for quickly set attributes of the :guilabel:`active band set`.
| Tool symbol and name | Description |
|---|---|
:guilabel:`Wavelength`  |
rapid definition of band center wavelength for the following satellite sensors: * Band order * ASTER * GeoEye-1 * GOES * Landsat 8 OLI * Landsat 7 ETM+ * Landsat 4-5 TM * Landsat 1, 2, and 3 MSS * MODIS * Pleiades * QuickBird * RapidEye * Sentinel-2 * Sentinel-3 * SPOT 4, 5, and 6 * WorldView-2 and WorldView-3 |
|
open a csv file of wavelength values (center wavelength separated by comma or new line) |
| :guilabel:`Wavelength unit` |
|
:guilabel:`Date`  |
set the date of acquisition |
The table on the left side is the :guilabel:`Band set table`. It includes the list of all the defined :guilabel:`band sets` (the names of the first bands are displayed), which can be selected with a left click. Double click on a table item can be used to define the :guilabel:`Active band set`.
A :guilabel:`Filter` can be used to display :guilabel:`band sets` in the table matching a name.
The following tools are available for managing :guilabel:`band sets`.
| Tool symbol and name | Description |
|---|---|
 |
add a new empty :guilabel:`band set` |
|
remove highlighted :guilabel:`band sets` |
 |
sort :guilabel:`band sets` by date |
|
move highlighted :guilabel:`band sets` upward |
|
move highlighted :guilabel:`band sets` downward |
 |
display the RGB color composite of selected :guilabel:`band sets` (a virtual raster is added in QGIS) |
:guilabel:`Band set tools` are tools that can be executed directly on :guilabel:`Active band set`. Multiple tools can be selected by the corresponding check box. This can also be useful to automate the processing during image conversion.
| Tool symbol and name | Description |
|---|---|
 :guilabel:`Create virtual raster of band set` |
create a multiband virtual raster of :guilabel:`Active band set` |
| :guilabel:`Create raster of band set (stack bands)` |
stack bands in a single multiband raster |
| :guilabel:`Build band overview` |
build band overview of :guilabel:`Active band set` |
| :guilabel:`Band calc expression` |
execute the expression defined in :ref:`band_calc_tab` |
 |
execute selected tools |