4.14 How to put image in a title page?

\documentclass[oneside,a4paper  , 12 pt]{book} 
\usepackage{titlepic} 
\usepackage{graphicx} 
\usepackage{caption} 
%\usepackage{package} 
%\usepackage[space]{grffile} 
 
\begin{document} 
\title{my book} 
\author{me} 
\date{\today} 
\titlepic{ 
\begin{figure}[t!] 
\centering 
\includegraphics[width=0.7\linewidth]{img.png} 
\caption{} 
\label{fig:img} 
\end{figure} 
} 
\maketitle 
 
test 
 
\end{document}