Provided by ITT Visual Information Solutions

ENVI is the premier software solution for processing and analyzing geospatial imagery used by scientists, researchers, image analysts, and GIS professionals around the world. ENVI software combines the latest spectral image processing and image analysis technology with an intuitive, user-friendly interface to help you get meaningful information from imagery.

IDL is the ideal, timesaving solution for data analysis, data visualization, and software application development. From “quick-look” analysis and display to commercial programming projects, IDL combines the technology and tools you need with a modern, extensible environment.


SignalShow is free educational signal and image processing software, ideal for classroom demonstrations.  

  • Create 1D and 2D complex functions
  • Design systems
  • Interact with animated demonstrations

Perfect for: 

  • Digital Signal Processing
  • Digital Image Processing
  • Optics


Signals allows the user to generate one-dimensional complex functions, process them in various ways (histograms, Fourier transforms, convolutions, etc.), and graph the results. The Instruction Manual is also available online.

This was developed by Professor Roger Easton. Originally written for MS-DOS, a Windows version is available for beta testing.


ImageJ is a public domain Java image processing program inspired by NIH Image for the Macintosh. It runs, either as an online applet or as a downloadable application, on any computer with a Java 1.4 or later virtual machine. Downloadable distributions are available for Windows, Mac OS, Mac OS X and Linux.