GBDX

ENVI® First Order Entropy Texture

This task computes first-order entropy texture metrics on an input raster.

GBDX Registered Name: ENVI_FirstOrderEntropyTexture
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_FirstOrderEntropyTexture 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 the input ENVIRaster. This routine accepts an image with any number of bands. -- 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
bin_count False 64 string Specify the number of bins in the histogram to be used for the entropy calculation. -- Value Type: UINT -- Default Value: 64
max_src_values False N/A string Specify an array of the maximum source values to be used in the histogram for the entropy calculation, one for each band. The number of elements in the array must match the number of bands. -- Value Type: DOUBLEARRAY
min_src_values False N/A string Specify an array of the minimum source values to be used in the histogram for the entropy calculation, one for each band. The number of elements in the array must match the number of bands. -- Value Type: DOUBLEARRAY
kernel_size False [3, 3] string Specify a two-element array [n,m] as the kernel size, where n is the number of columns and m is the number of rows. The values must be odd and at least 3, for example [3,3]. -- Value Type: UINTARRAY -- Default Value: [3, 3]
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_FirstOrderEntropyTexture 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® First Order Entropy Texture.

Contact

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