Over the years I tried to minimize exposure people's faces in images on my internet presence, mostly to evade automated facial recognition tools. I tried to either not show them at all or blur/occlude them in some way or another.
However, what about simply dithering these images? Dithering generates images which are easily recognizable by humans, but I could think that today's machines have a hard time to recognize faces on these images. Here's an example:
Is dithering a viable method to evade today's facial recognition algorithms, at least those commercially available?
By a quick search, I just found this paper, which seems to actually use dithering to do the recognition.