GBDX

ENVI® Gram Schmidt Pan Sharpening

This task performs Gram-Schmidt Pan Sharpening using a low-resolution raster and a high-resolution panchromatic raster.

GBDX Registered Name: ENVI_GramSchmidtPanSharpening
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_GramSchmidtPanSharpening 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_low_resolution_raster True N/A See ENVIRASTER input type Specify a low-resolution raster. -- Value Type: ENVIRASTER
input_low_resolution_raster_format False N/A string Provide the format of the image, for example: landsat-8. -- Value Type: STRING
input_low_resolution_raster_band_grouping False N/A string Provide the name of the band grouping to be used in the task, ie - panchromatic. -- Value Type: STRING
input_low_resolution_raster_filename False N/A string Provide the explicit relative raster filename that ENVI will open. This overrides any file lookup in the task runner. -- Value Type: STRING
input_low_resolution_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
input_high_resolution_raster True N/A See ENVIRASTER input type Specify a high-resolution panchromatic raster. -- Value Type: ENVIRASTER
input_high_resolution_raster_format False N/A string Provide the format of the image, for example: landsat-8. -- Value Type: STRING
input_high_resolution_raster_band_grouping False N/A string Provide the name of the band grouping to be used in the task, ie - panchromatic. -- Value Type: STRING
input_high_resolution_raster_filename False N/A string Provide the explicit relative raster filename that ENVI will open. This overrides any file lookup in the task runner. -- Value Type: STRING
input_high_resolution_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
resampling False "bilinear" string Specify the resampling method. Nearest Neighbor: Uses the nearest pixel without any interpolation. Bilinear: Performs a linear interpolation using four pixels to resample, Cubic Convolution: Uses 16 pixels to approximate the sinc function using cubic polynomials to resample the image. -- Value Type: STRING -- Default Value: "Bilinear"
sensor False N/A string Specify a lower-case string with the sensor that acquired the high-resolution panchromatic input. If SENSOR is not set, then the task determines if the data has valid sensor information in the metadata. If not, SENSOR is set to 'Unknown'. See the 'filterfuncs' directory in the ENVI installation path for a list of valid sensor strings. User-defined sensors are also valid as long as they are in this directory. -- Value Type: STRING
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_GramSchmidtPanSharpening 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® Gram Schmidt Pan Sharpening.

Contact

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