GBDX

ENVI® Dark Subtraction Correction

This task performs a simple atmospheric correction by subtracting a user-specified digital number (DN) from each band.

GBDX Registered Name: ENVI_DarkSubtractionCorrection
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_DarkSubtractionCorrection inputs.
Mandatory (optional) settings are listed as Required = True (Required = False).

Name Required Default Valid Values Description
file_types False N/A string GBDX Option. Comma seperated list of permitted file type extensions. Use this to filter input files -- Value Type: STRING[*]
input_raster True N/A See ENVIRASTER input type Specify a raster on which to perform dark subtraction correction. -- Value Type: ENVIRASTER
input_raster_format False N/A See ENVIRASTER input type Provide the format of the image, for example: landsat-8. -- Value Type: STRING
input_raster_band_grouping False N/A See ENVIRASTER input type Provide the name of the band grouping to be used in the task, ie - panchromatic. -- Value Type: STRING
input_raster_filename False N/A See ENVIRASTER input type Provide the explicit relative raster filename that ENVI will open. This overrides any file lookup in the task runner. -- Value Type: STRING
values True N/A string Specify a DN value or array of DN values to subtract from each band. The number of elements in the array must match the number of bands. -- Value Type: DOUBLEARRAY
output_raster_uri_filename False N/A string Specify a string with the fully-qualified path and filename for OUTPUT_RASTER. -- Value Type: STRING

Outputs

The following table lists all ENVI_DarkSubtractionCorrection outputs.
Mandatory (optional) settings are listed as Required = True (Required = False).

Name Required Default Valid Values Description
task_meta_data False N/A directory GBDX Option. Output location for task meta data such as execution log and output JSON
output_raster_uri True N/A directory Output for OUTPUT_RASTER. -- Value Type: ENVIURI

Output structure

The output_raster_uri file will be written to the specified S3 Customer Account Location.

Background

For additional background information on this task please refer to the Harris Geospatial ENVI documentation and
ENVI® Dark Subtraction Correction.

Contact

If you have any questions or issues with this task, please contact gbdx-support@digitalglobe.com.

ENVI® Dark Subtraction Correction

This task performs a simple atmospheric correction by subtracting a user-specified digital number (DN) from each band.

GBDX Registered Name: ENVI_DarkSubtractionCorrection
Provider: Harris Geospatial Solutions