You might find "free Halcon license download" on torrent sites or forums. Cracks often:
To execute the and installation on your local machine, you generally need the HALCON installation package. This includes a utility often called hinstall or the "License Administration Tool."
Halcon, developed by MVTec, is one of the most powerful machine vision libraries in the world. It powers everything from surface inspection systems to complex 3D object recognition. However, before you can write a single line of code—whether in C++, C#, Python, or the proprietary HDevelop environment—you must obtain and properly install a valid license.