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ENVI 5 Service Pack 2

What's New in ENVI 5, Service Pack 2

This version of ENVI includes the new and enhanced features listed below.
  • A new Radiometric Calibration tool calibrates image data to spectral radiance, top-of-atmosphere reflectance, or at-sensor brightness temperatures by reading the relevant metadata from the satellite vendor. Calibration options vary by sensor. This tool replaces the Calibrate Landsat, Calibrate WorldView, and Calibrate QuickBird tools; those have been removed from the Toolbox. The Radiometric Calibration tool also provides an option to create a radiance image that can be directly imported into the FLAASH atmospheric correction tool.
  • You can interface directly with the Mensuration Services Program (MSP) toolkit with an ENVI plug-in, which is only available through U.S. government channels.
  • If you open an OGC WMS raster layer that contains a legend, the legend displays in the Layer Manager. This is available only on Windows operating systems. To create an annotation object from the legend that you can overlay on the image, right-click the layer name and select Load Layer as Annotation. This is useful, for example, in creating a PowerPoint presentation from the view.
  • Double-clicking an annotation item or vector layer in the Layer Manager displays the Properties dialog, so you can quickly edit annotation or vector properties.
  • You can right-click on an annotation item in the Layer Manager and select Go To Item to jump to the center of the annotation item.
  • In the Preferences dialog, asterisks were placed next to field names to indicate which preferences require ENVI to be restarted before the preference takes effect.
  • The Apply Gain and Offset tool works with any image that has gains and offsets defined in an ENVI header file (.hdr). It also works with Landsat, QuickBird, and WorldView images.
  • The Create Coordinate System String dialog lets you choose a coordinate system, then creates a text file containing a coordinate system string that you can add to an ENVI header file (.hdr) or use with the ENVI application programming interface (API).
  • The Image Registration workflow has an option to set the output pixel size. You can specify whether the output pixel sizes (x and y) are the same as the base or warp images, or you can set custom values.
  • You can create a custom image format with an ENVI header and use the File > Open menu to open it. See the "Custom Image Format" tutorial for a step-bystep example.
  • You can read a custom data file without an ENVI header, or when you want to pass custom metadata into your spatial and spectral readers. You can then add this procedure to the menu under File > Open As > Custom. See the "Custom Open Procedure" tutorial for a step-by-step example.
  • A tutorial is available for working with raster metadata in the ENVI API.
  • A TIME property was added to the ENVIRaster object. This property retrieves a reference to a new ENVITime object, which stores the acquisition time of a raster dataset.
  • Connections to Esri® Image Services work on all ENVI-supported platforms. An installation of ArcGIS® 10 is no longer required.
  • The Remote Connection Manager provides an ArcGIS Server option from the Type drop-down menu for connecting to Esri Image Services.
  • ENVI reads PNG (Windows operating systems only), TIFF/GeoTIFF, and JPEG files from Esri Image Services and OGC servers.
  • ENVI now supports Web Mapping Services (WMS) version 1.3.0. Datasets from OGC WMS and WCS servers can be used in all workflows.
  • The Server and Port fields are populated automatically when you open a remote dataset in the Remote Connection Manager. The CGI Prefix field has also been removed.
  • The following are new standard metadata fields in ENVI header files: acquisition time: Data acquisition time in Coordinated Universal Time(UTC)
    • cloud cover: Percentage of cloud cover within the scene
    • solar irradiance: Top-of-atmosphere solar irradiance per band. Units are W/(m2 * µm).
    • sun azimuth: Angle of the sun (in degrees) from due north in a clockwise direction.
    • sun elevation: Angle of the sun (in degrees) above the horizon.
  • New keywords based on these header fields were added to the ENVI_SETUP_HEAD and ENVI_FILE_QUERY routines for ENVI programmers.
  • ENVI reads SPOT-6 imagery with metadata (DIMAP format).
  • ENVI reads ALOS AVNIR-2 and PRISM Level-1B2 + RPC data.
  • ENVI reads ALOS PALSAR complex data.
  • ENVI reads acquisition time, cloud cover, gains, offsets, full-width-halfmaximum (FWHM) values, wavelengths, solar irradiance, sun azimuth, and sun elevation from the following sensors:
    • ALOS AVNIR-2 and PRISM Level-1B2 + RPC data
    • ASTER
    • Disaster Monitoring Constellation (DMC) satellites
    • GeoEye-1
    • IKONOS
    • Landsat TM and ETM+
    • OrbView-3
    • Pleiades Primary or Ortho (single or mosaic)
    • QuickBird
    • RapidEye Level-1B
    • SPOT DIMAP
    • WorldView
  • If available, these metadata fields are listed in the Metadata Viewer when you open an image. If you save images from the above sensors to ENVI raster format, these metadata fields are written to the ENVI header file as standard metadata.
  • The Metadata Viewer lists user-defined metadata, in addition to standard metadata.
  • Landsat filenames and metadata formats changed in August 2012. ENVI now reads Landsat files before and after this date. Choose a *_MTL.txt, *_WO.txt, or .met file, depending on the date and data provider (USGS or GLCF).
  • The NITF Metadata Viewer contains a new field called "NITF Security Banner," and the Status Bar has an option to display the NITF Security Banner for NITF files.
Sales Engineer (Tokyo, Japan) IDL 8.2.2