It’s not legal
It shouldn’t be. Unfortunately, afaik, no lawsuits have been settled yet. Seems like Anderson v. Stability Ai is the one to watch with regard to OP.
For anyone interested, there are some image poisoning tools out there to protect (glaze as example) your att or even attack (nightshade as examle) ai models directly
AFAIK it’s very model specific attacks and won’t work against other models. Their tool preserving art the same to human eye is great offering, and there’s always rigorous watermarking (esp. with strong contrast) as an universally effective option.
Watermarking with strong contrast prevents ai from using the images in training? Since when?
It doesn’t selectively prevents learning, instead it hinders overall recognition even to the human eyes to some extent. The examples I know is old, but artists once tried to gauge model’s capability of i2i from sketches (there’s few instances people took artists’ wip and feed it to genAI to “claim the finished piece”). Watermaking, or constant tiling all over the image worked better to worsen genAI’s recognition than regular noise/dither type filter.
