I suppose it is a type of dithering, but really this is Halftoning

Very nice results, I really like the way it looks like a printed page. Image processing is addictive - once you start playing around it is hard to stop.

??? This is halftoning, not dithering

Every image should be dithered below 10 bits/component to prevent banding artifacts.

If you're doing halftoning with the intent to get custom DTF (direct to film) prints for t shirts, you might find this tool helpful:

https://tools.encona.com/dtf

It aims to 'knock out' some areas of the image: make them transparent in the digital image so those areas are not part of the final film. This means less of the surface of the t shirt has film on it, allowing it to be breathable and flexible.

I got some DTF prints made before I knew you were meant to do this. The tutorials online required a lot of steps so I made the above for next time. Not tested for real yet.

Title here is missing "How" as in "How My Images Are Dithered"

Why is this not a typical data augmentation method for training deep networks? It would allow the networks to learn invariants that's align with humans. Currently, I suppose none of these dithered images would be correctly classified.