I am writing a book using the book document class. I have used a template I found online to make my chapter headings look like this:

I would prefer to add an image to my chapter heading and achieve an effect similar to this:

Is there a particular package that allows me to modify the chapter heading in such a way? I have no idea how to go about it, any help will be much appreciated.

• Titlesec allows you to do about what you want, but the problem is LaTeX can't simply produce such an image. Is it for a comic book? – Bernard Mar 8 '16 at 22:36
• @Bernard Can I import my own image using Titlesec? – Luke Collins Mar 9 '16 at 20:28
• Via \includegraphics, yes (if it's in one of the formats known to pdflatex). – Bernard Mar 9 '16 at 20:39
• @Bernard Could you give me an example of how the syntax would look? Especially to overlay the chapter number over the image. I've been reading through the documentation but I haven't managed to grasp it. – Luke Collins Mar 12 '16 at 9:52
• I tagged this tikz-pgf. Maybe it attracts some users. – Johannes_B Jul 21 '16 at 14:06

\documentclass{book}
\usepackage{xcolor}
\usepackage{titlesec}
\usepackage{hyperref}
\usepackage{graphicx}
\usepackage[percent]{overpic}
\usepackage{fix-cm}
\usepackage{lipsum}

% formats: \chapter
\newcommand\ctformatchapter[1]{%
\parbox[b][6cm][b]{\dimexpr.5\textwidth\relax}{%
\raggedright%
\textcolor{cyan!50!blue}{\textsf{#1}}%
}%
}

\titleformat{\chapter}[display]%
{\fontsize{20pt}{20pt}\bfseries\selectfont}%
{%
\raggedleft{%
\begin{overpic}[width=0.5\textwidth]{ctan-lion}
\put (30,42) {\rotatebox{-20}{\fontsize{60pt}{60pt}\selectfont\textsf{\Roman{chapter}}}}
\put (20,50) {\textcolor{cyan!50!blue}{\textsf{Chapter}}}
\end{overpic}
}%
}%
{-6.5cm}%
{\ctformatchapter}%
[\phantomsection]

\begin{document}
\chapter{Introduction}
\lipsum
\end{document}