https://gisgeography.com/unsupervised...

In this video, I'm going to show you how to perform unsupervised image classification in ArcGIS Pro.

Unsupervised image classification in remote sensing uses clustering algorithms to group similar pixels in an image without using any prior training data.

This approach is called "unsupervised" because the algorithm doesn't rely on labeled data to learn how to classify different types of land cover or features in the image.