I found an interesting solution from caltech: https://github.com/caltechlibrary/handprint https://github.com/caltechlibrary/handprint Also it seems the keyword

I found an interesting solution from caltech: https://github.com/caltechlibrary/handprint https://github.com/caltechlibrary/handprint Also it seems the keyword to find models and apis for this is “handwritten text recognition.”