usepackage{titlesec}
titleformat{chapter}[display]
  {normalfontbfseriesLargecolor{black}}
  {tikz[remember picture,overlay] node[opacity=1,inner sep=0pt,anchor=north] at (current page.north){includegraphics[width=paperwidth,height=10cm]{thechapterpicture}};
    MakeUppercase{chaptertitlename}%
        rlap{ resizebox{!}{1.5cm}{thechapter}}
  }
  {10pt}{Huge}
titlespacing*{chapter}{0pt}{-50pt}{180pt}

newcommand{chapterpicture}[1]{%
  defthechapterpicture{#1}%
}