I am trying to make a book cover with the title a contour outline over an image, where you can see the image through the letters. Essentially, I would like the color of the fill (textcolor) to be "none."
The following is approaching what I want, but the words would have to be placed precisely over the same image so that it lines up, and would need an outline. Background clip to text Tikz
There's also this, but I can't figure out how to apply it. Tikz with contour and transparency
Here's a MWE, but obviously I can't see the image through the text.
\documentclass{article}
\usepackage[outline]{contour}
\usepackage{xcolor}
\usepackage{fix-cm}
\usepackage{tikz}
\usepackage{graphicx}
\begin{document}
\begin{center}
\tikz[remember picture,overlay] \node[opacity=0.3,inner sep=0pt] at (current page.center){\includegraphics[width=\paperwidth,height=\paperheight]{example-image}};
\textsf{\textbf{\Huge\contour{black}{\textcolor{white}{TITLE}}}}
\end{center}
\end{document}