Using Hasdx to create an AI-generated adult coloring book

I got inspired by a twitter thread yesterday from Chase Lean on how to create illustrations for children's books using Midjourney and thought it might be cool to look at a slightly different use case - creating coloring books for grown-ups.

I made a guide showing how to use the Hasdx model for this because it gives a good balance of style and realism/intracacy. The guide also explores some example prompts and shows how you can couple it with an upscaler like Real-ESRGAN, GFPGAN, or Codeformer to get even better results.

My three big takeaways:

• Hasdx balances general capabilities with a focus on realism and detail. This makes it well-suited for detailed adult coloring book images.
• The prompt structure gives you precise control over the theme and complexity of the generated illustrations. Negative prompts help avoid undesirable elements (sort of obvious I guess).
• Running Hasdx outputs through upscaling models improves quality for printing. ESRGAN is a good option but there are lots of others that can work well too.

I also investigated how to modify the prompt to vary the level of complexity in the image, effectively tailoring our model to the skill level of the adult (or child) who happens to be holding the crayons.

Here's a link to the guide.