The following are the new or enhanced features included in the 4.8 release.
ENVI Tools for ArcGIS
If you have ArcGIS® Desktop and ENVI installed, you can perform various image processing functions on raster datasets from the ArcGIS Desktop Toolbox.
Within the toolbox are some of the image processing tools that you would find in ENVI. The toolbox also includes full workflows (built with ArcGIS models) for anomaly detection, change detection, and classification. Furthermore, with an ENVI + IDL license, you can create custom tools based on ENVI batch programs and add these to the ArcGIS Toolbox. For more information, consult the separate ENVI for ArcGIS Help installed with the ENVI software.
Support for ArcGIS 10
ENVI4.8 is compatible with both ArcGIS Desktop 9.3 and 10.0. One installation of ENVI will support either a version 9.3 or 10.0 installation. All ArcGIS interoperability is supported, including geodatabase support.
Use the 3D LiDAR Viewer to interactively explore the (x,y,z) point values in a LAS-format file. You can display a raster image underneath the LiDAR data, adjust the elevation and viewing angle of the LiDAR data, and color the point data by attribute (for example, height, intensity, return value, or feature class). You can also measure the distance between points in two or three dimensions. See Using the 3D LiDAR Viewer for more information.
New Sensor and File Format Support
The following are new sensor and file format support available in the 4.8 release.
ENVI reads WorldView-2 data in GeoTIFF and NITF formats as well as tiled files (.til).
ENVI reads Digital Point Positioning Data Base (DPPDB) data in NITF format.
ENVI reads RADARSAT-2 data in GeoTIFF format.
ENVI reads LPGS-formatted Landsat MSS GeoTIFF files with metadata.
ENVI reads data from the UK-DMCSat-1, ALSAT-1, and NigeriaSat-1 satellites.
ENVI reads ASD Indico versions 6 and 7 spectral library files.
New ENVI Library Routines
Three new routines have been added to the library for the ENVI + IDL software:
ENVI_IS_GDB: Test whether an ArcGIS catalog path points to a geodatabase.
ENVI_OPEN_GDB: Open a raster dataset from a geodatabase.
ENVI_OUTPUT_TO_GDB: Write a raster dataset to a geodatabase.
See Alphabetical List of ENVI Library Routines for more information.
Built on IDL 8.0
Users of ENVI + IDL now have access to IDL 8.0, which includes a simplified IDL Workbench and major language enhancements that are intuitive and easy to use. For more information, consult the separate IDL Help installed with the ENVI software.
Miscellaneous ENVI Features
You can export single or multiple ROI files to training data shapefiles by using the Basic Tools > Region of Interest > Export ROIs to Training Data menu option. See Managing ROI Files for more information.
The Cursor Location/Value dialog can be configured to display MGRSMilitary Grid Reference System; the coordinate standard used by NATO militaries for geolocating points on the earth. coordinates. See Displaying Cursor Location/Value for more information.
Topographic Modeling can compute slope in units of both percentage and degrees. See Using Topographic Modeling for more information.
New and Enhanced Features in ENVI Zoom
Anomaly Detection Workflow
Anomaly Detection is now a workflow that has an optional Percentage Thresholding step and shapefile output. See "About the Anomaly Detection Workflow" in ENVI Zoom Help for more information.
The Viewshed Analysis workflow uses a gridded digital elevation model (DEM) to determine the locations that are visible from specified viewing positions. If you select a single view, then the viewshed represents all locations with an unobstructed line of sight to the viewpoint. If you select multiple points, then the viewshed can be defined as either (1) all locations visible from at least one of the viewpoints, or (2) locations visible from all viewpoints. See "About the Viewshed Analysis Workflow" in ENVI Zoom Help for more information.
ENVI now supports linking to and utilizing certain functionality from the Mensuration Services Program (MSP) library. Capabilities include getting the cursor location value, setting the elevation source, setting the order precedence for sensor models, and linear mensuration.
ENVI Zoom is compatible with ArcGIS Desktop 9.3 and 10.0.
ENVI Zoom writes DTED files (Levels 0, 1, and 2).
ENVI Zoom reads Digital Point Positioning Data Base (DPPDB) data in NITF format.
ENVI Zoom reads data from WorldView-1, WorldView-2, IKONOS, and OrbView-3 satellite platforms.
ENVI Zoom reads LPGS-formatted Landsat MSS GeoTIFF files with metadata.
You can configure the Status Bar segments of the ENVI Zoom user interface to display MGRSMilitary Grid Reference System; the coordinate standard used by NATO militaries for geolocating points on the earth. coordinates.
You can enter MGRS coordinates into the Go To tool located on the ENVI Zoom user interface toolbar.
You can set the map scale of the Data Frame in a map layout. See "Working with the Print Layout View" in ENVI Zoom Help for more information.