(I'm the author) I don't really claim that Lanczos interpolation as presented is the "best" 2D interpolation there is. It is definitely popular though, and I c

(I'm the author) I don't really claim that Lanczos interpolation as presented is the "best" 2D interpolation there is. It is definitely popular though, and I couldn't find a source explaining how it is derived, so I thought it'd be an interesting topic for a blog post.