GBDX

ENVI® Matched Filter

This task performs a matched filter supervised classification.
GBDX Registered Name: ENVI_MatchedFilter
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_MatchedFilter 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 the matched filter classification. -- 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
input_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
use_subspace_background False true string Specify whether to use subspace background in statistics calculation. -- Value Type: BOOLEAN -- Default Value: true
names False N/A string This is an array of endmember names as defined by the input vector. -- Value Type: STRINGARRAY
background_threshold False 0.9 string Specify the background threhsold to use when calculating statistics using subspace background. -- Value Type: DOUBLE -- Default Value: 0.9
endmembers True N/A string Specify an array that is [number of bands,number of classes] -- Value Type: DOUBLEARRAY
output_raster_uri_filename False N/A string Specify a string with the fully qualified path and filename of the output raster. -- Value Type: STRING

Outputs

The following table lists all ENVI_MatchedFilter 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 of the 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® Matched Filter.

Contact

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