Unsupervised Classification and Polygonization With QGis

Programs and Plugins required

Qgis (3.22 was used in this tutorial) https://qgis.org/en/site/forusers/download.html
7Zip https://www.7-zip.org/
SCP Plugin (download through QGis)

Acquiring Data

For this tutorial pretty much any remote sensing data can be used. Depending on what data it it it may require pre-processing in order to produce a usable product, and that is outside the scope of this tutorial.

A good resource for free remote sensing data us the USGS Earth explorer. It involves making an account but it is such a good resource for remote sensing data that it is completely worth the extra step.

Sign up here https://ers.cr.usgs.gov/login

Now that you have made an account or signed into your existing account it is time to find the data to use.