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What’s New in ENVI 5.5.2

ENVI 5.5.2 adds some new features and enhancements, and important fixes to the software. See the following sections:

  • File Formats and Data Access
  • ArcGIS Integration
  • ENVI Modeler Updates
  • Dimensionality Expansion
  • Programming
  • Other General Enhancements

File Formats and Data Access

  • New spectral filter functions are available for Sentinel-2A and -2B.
  • NITF – The NITF/NSIF Module supports the following Tagged Record Extensions (TREs):
    • CSATTB and CSATTB_DESDATA: Common Sensor Attitude Data
    • CSCSDB and CSCSDB_DESDATA: Common Sensor Covariance Support Data
    • CSEPHB: Common Sensor Ephemeris Data
    • CSEXRB: Common Sensor Exploitation Reference Data
    • CSSFAB and CSSFAB_DESDATA: Common Sensor Field Alignment Data
    • CSSHPA: Common Sensor Shapefile
    • CSSHPB and CSSHPB_DES: Common Sensor Shapefile
    • CSWRPB: Common Sensor Warping Terms
    • MATESA
    • MTXFIL
    • RSMAPB: Replacement Sensor Model Adjustable Parameters
    • RSMDCB: Replacement Sensor Model Direct Error Covariance
    • RSMECB: Replacement Sensor Model Indirect Error Covariance
    • STREOA: Stereo Information
    • Reading MIE4NITF files is significantly faster, especially with large files.
    • The new Download Web Data menu option lets you download remote sensing data from the web, extract the data, and open the data directly in ENVI
  • Reading MIE4NITF files is significantly faster, especially with large files.
  • The new Download Web Data menu option lets you download remote sensing data from the web, extract the data, and open the data directly in ENVI.

ArcGIS Integration

ENVI Py 1.2 provides support for the ENVICOORDSYS data type. As a result, ENVIReprojectRaster can be deployed as a standalone tool in ArcMap and ArcGIS Pro.

ENVI Modeler Updates

  • A new Filter Iterator node executes an operation only when a specified condition is met. This node iterates through a collection of data while also applying the specified condition.
  • A Run Model in Debug Mode option was added to the ENVI Modeler menu bar. When the model runs, an Execution Report dialog reports the execution times for individual nodes and for the entire model. It also reports the values used for task parameters.
  • Multiple Aggregator nodes can be combined; for example, using one Aggregator node to close a loop introduced by an Iterator node, and using another Aggregator node to collect items into an array.

Dimensionality Expansion

  • The new Dimensionality Expansion tool creates additional bands in a multispectral image by computing second-order statistics and other nonlinear transforms on the original bands. Having additional bands increases the dimensionality of a raster, which can help improve accuracy in some classification and subpixel target detection algorithms. The additional bands are created by computing the square roots, natural logs, squares, and cross-correlations of the input bands.
  • The new Spectral Library Dimensionality Expansion tool runs dimensionality expansion on a spectral library. This is useful if you create a dimensionality expansion image and you want the spectral library to match the data space of that image.

Programming

Several new ENVITasks and routines have been added:

  • ENVIReprojectRasterTask is no longer based on the ENVIReprojectRaster virtual raster.
  • New ENVITasks
    • ENVIBinaryAutomaticThresholdRasterTask
    • ENVICalculateGridDefinitionFromRasterIntersectionTask
    • ENVICalculateGridDefinitionFromRasterUnionTask
    • ENVICalculateRasterThresholdTask
    • ENVIDimensionalityExpansionRasterTask
    • ENVIDimensionalityExpansionSpectralLibraryTask
    • ENVIExtractROIsFromFileTask
    • ENVIPixelStatisticsTask
  • New Routines
    • ENVIDimensionalityExpansionRaster

Other General Enhancements

  • The Reproject Raster tool has a simpler user interface.
  • The Layer Stacking tool has a simpler user interface with new options to define the output extent based on the geometric intersection or union of the input images.
  • In the Seamless Mosaic workflow, mosaics created from multispectral images now have a band-interleaved-by-pixel (BIP) format. This significantly reduces processing time. Mosaics of single-band images will continue to have a band-sequential (BSQ) interleave. A new Duplicate Selected right-click option lets you copy and paste annotation items in a view.
  • You can delete multiple pixel-based and polygon-based ROI records by holding down the Shift key, then drawing a polygon around the records to remove.
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