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ENVI® Basics for GEOINT

Geospatial eLearning Program


ENVI Basics for GEOINT is a scenario-based introduction to ENVI, designed to get defense and intelligence image analysts, geospatial engineers, and geospatial analysts up to speed as quickly as possible. Each exercise represents a real-world scenario in which students use ENVI tools to solve a geospatial problem and to generate an output product.


Sections in This Course



Getting Started with ENVI

4 Hours

  • Learning the ENVI interface
  • Exploring the ENVI Toolbox
  • Setting preferences
  • Opening, displaying, and navigating imagery

Image Reconnaissance

3 Hours

  • Using contrast stretching to enhance imagery
  • Working with multiple views
  • Annotating imagery
  • Creating a map presentation in PowerPoint

Preparing NITF Imagery for Facility Analysis

3 Hours

  • Viewing NITF imagery and metadata
  • Orthorectifying imagery
  • Creating an image mosaic
  • Measuring features of interest

Mapping Water Lines of Communication

2 Hours

  • Using spectral indices to highlight water
  • Applying ROI thresholds
  • Exporting ROI thresholds to classification images

Creating Topographic Products

2 Hours

  • Creating shaded-relief images
  • Categorizing slope percentage for drop zones
  • Blending shaded-relief and electro-optical (EO) images

Mapping Relative Water Depth

1 Hour

  • Creating relative water depth images
  • Applying color tables to relative water depth images

Pan Sharpening of Panchromatic and Multispectral Imagery

1 Hour

  • Visually comparing panchromatic and multispectral images
  • Creating a pan-sharpened image to look for surface-to-air (SAM) missile sites

Extracting Building Footprints from Imagery

2 Hours

  • Creating a segmentation image
  • Creating a set of rules to extract buildings
  • Exporting building footprints to a shapefile

Change Detection

2 Hours

  • Visually comparing two images from different dates
  • Using a guided workflow to create a difference image
  • Creating a classification image of “new” and “fled” features

Building a Raster Series

2 Hours

  • Building a raster time series from multiple images
  • Creating a video animation from a raster time series
  • Creating a temporal cube

Analyzing Low Light Imagery

2 Hours

  • Working with VIIRS Day/Night Band (DNB) imagery
  • Monitoring troop and vessel activity

Analyzing SAR Imagery

2 Hours

  • Working with Capella Space SAR SICD imagery
  • Visually interpret effects of shadow, layover, and foreshortening

This Course Includes:

  • Course Length: 26 Hours
  • ENVI Software: 60-day temp license and required modules
  • Learning Checks: Quiz at end of each lesson
  • Certificate: Certificate of Completion at course end

System Requirements

  • Operating System: Windows 10 or 11
  • Disk Space: Approx. 4GB for installation
  • Memory: Minimum 8GB
  • Graphics: NVIDIA GPU with compute capability of 3.5 or higher


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