To write a research paper based on this software, you typically follow a remote sensing workflow:

: Added read capabilities for LizardTech's MrSID compressed image format.

Hexagon offers a of the latest ERDAS IMAGINE. While not version 8.4, it’s far more powerful and safe. You need to register with a valid email.

If you cannot afford a license, there are powerful, free, and open-source GIS/Remote Sensing tools that perform many of the same functions:

If you're affiliated with an educational institution, you might be eligible for a free or discounted version of the software.

For decades, has been a gold standard in remote sensing, photogrammetry, and geospatial analysis. Version 8.4, released in the early 2000s, remains a nostalgic milestone for many GIS professionals. It introduced advanced spatial modeling, better image classification, and improved radar data support.