\addchap[Campusplan]{}
\thispagestyle{empty} %keine Seitenzahl
\AddToShipoutPicture*{\put(0,0){%
\parbox[b][\paperheight]{\paperwidth}{%
\vfill
\centering
\includegraphics[width=.95\paperwidth,height=.95\paperheight,keepaspectratio]{img/campusplan_highlighted.pdf}%
\vfill
}}}
\mbox{}