Invisible Watermarker

For more details check out: https://artshield.io/blog/post/stable-diffusion-invisible-watermarker-the-math-and-our-algorithm-improvements

This is the code we're utilizing in https://artshield.io to apply our invisible watermark

We plan on releasing an easily consumable PIP package soon.

We referenced this library for the algorithm: https://github.com/ShieldMnt/invisible-watermark