GBDX

ENVI® Reproject GLT

This task reprojects a raster geo-referenced by a GLT (Geographic Lookup Table) to standard map information

GBDX Registered Name: ENVI_ReprojectGLT
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_ReprojectGLT 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 Some sensors such as NPP VIIRS and MODIS contain bowtie artifacts in the source imagery. This task georeferences NPP VIIRS or MODIS imagery, which also removes the bowtie artifacts. -- 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
quality_flag False 2.0 string Specify a value to set on the Quality Flag raster (specified by the QUALITY_RASTER property). The default value is 2, which is used to reproject NPP VIIRS products. For MODIS products, set this property to 255. -- Value Type: DOUBLE -- Default Value: 2.0
polar False false string The default output projection is Geographic WGS-84. Set this property to true for a Polar Stereographic WGS-84 projection if the imagery covers the polar regions. -- Value Type: BOOLEAN -- Default Value: false
longitude_raster True N/A See ENVIRASTER input type Specify a raster that represents the Longitude band of a GLT image. -- Value Type: ENVIRASTER
longitude_raster_format False N/A string Provide the format of the image, for example: landsat-8. -- Value Type: STRING
longitude_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
longitude_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
longitude_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
latitude_raster True N/A See ENVIRASTER input type Specify a raster that represents the Latitude band of a GLT image.. -- Value Type: ENVIRASTER
latitude_raster_format False N/A string Provide the format of the image, for example: landsat-8. -- Value Type: STRING
latitude_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
latitude_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
latitude_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
interpolation_method False 0 string The GLT algorithm establishes a regular output grid and finds the best location for each source image pixel. Any output grid point for which a source pixel could not be found will be filled using the nearest valid neighbor or with a distance-weighted average of the surrounding valid values. The default interpolation method for reprojection is a distance-weighted average, which creates an image with the fewest visible interpolation artifacts. Set the INTERPOLATION_METHOD property to 1 to perform nearest-neighbor interpolation in cases where the set of valid pixel values should not be modified (for example, when values represent the integral values of a classification). -- Value Type: INT -- Default Value: 0
output_raster_uri_filename False N/A string Specify a string with the fully-qualified path and filename for OUTPUT_RASTER. -- Value Type: STRING
quality_raster False N/A See ENVIRASTER input type Specify a raster that represents the Quality Flag band of a GLT image. -- Value Type: ENVIRASTER
quality_raster_format False N/A string Provide the format of the image, for example: landsat-8. -- Value Type: STRING
quality_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
quality_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
quality_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING

Outputs

The following table lists all ENVI_ReprojectGLT 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® Reproject GLT.

Contact

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