\begin{tikzpicture}[node distance = 0,scale = 1]
\tikzstyle{every node}=[scale=1]
\node[draw=white] (input) at (0,0){\includegraphics[width=0.62\textwidth]{./Chapter15/Figures/DLCL-picture.png}};
{\footnotesize
\node[anchor=center]  at (4.1,3){4};
\node[anchor=center]  at (4.1,1.5){2};
\node[anchor=center]  at (4.1,0){0};
\node[anchor=center]  at (4.1,-1.5){-2};
\node[anchor=center]  at (4.1,-3){-4};
\node[anchor=center]  at (-4.2,3.6){$ x_{1}$};
\node[anchor=center]  at (-4.2,2.45){$ x_{6}$};
\node[anchor=center]  at (-4.2,1.3){$ x_{11}$};
\node[anchor=center]  at (-4.2,0.15){$ x_{16}$};
\node[anchor=center]  at (-4.2,-1){$ x_{21}$};
\node[anchor=center]  at (-4.2,-2.15){$ x_{26}$};
\node[anchor=center]  at (-4.2,-3.3){$ x_{31}$};
\node[anchor=center]  at (-3.75,-3.8){$ y_{0}$};
\node[anchor=center]  at (-2.6,-3.8){$ y_{5}$};
\node[anchor=center]  at (-1.45,-3.8){$ y_{10}$};
\node[anchor=center]  at (-0.3,-3.8){$ y_{15}$};
\node[anchor=center]  at (0.85,-3.8){$ y_{20}$};
\node[anchor=center]  at (2,-3.8){$ y_{25}$};
\node[anchor=center]  at (3.15,-3.8){$ y_{30}$};
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\end{tikzpicture}