I've been trying to recreate this table, 
so far i manage to write,
\begin{table*}[h!]
\caption{Bit error rates of different templates when using the same deep-learning based extraction method}
\centering
\begin{tabular}{c|cc|cc|cc|cc}
\toprule
\multirow{2}{*}{Algorithms} &
\multicolumn{2}{c}{JPEG (QF=50)} &
\multicolumn{2}{c}{Med-Filter $7\times7$} &
\multicolumn{2}{c}{Gau-Filter $7\times7$} &
\multicolumn{2}{c}{Gau-Noise $\sigma=0.01$} \\ \cmidrule {2-9}
& Traditional & CNN & Traditional & CNN & Traditional & CNN & Traditional & CNN \\ \midrule
Nakamura \textit{et al.} [12] & $35.99\%$ & $\mathbf{29.51\%}$ & $ 9.38\%$ & $\mathbf{8.39\%}$ & $0.00\%$ & $\mathbf{0.00\%}$ & $0.00\%$ & $\mathbf{0.00\%}$ \\ \midrule
Primila \textit{et al.} [23] & $45.01\%$ & $\mathbf{38.35\%}$ & $ 38.76\%$ & $\mathbf{26.31\%}$ & $4.12\%$ & $\mathbf{1.19\%}$ & $24.34\%$ & $\mathbf{22.75\%}$ \\ \midrule
Gugelmann \textit{et al.} [15] & $16.16\%$ & $\mathbf{15.76\%}$ & $ 15.63\%$ & $\mathbf{8.86\%}$ & $14.48\%$ & $\mathbf{3.93\%}$ & $\mathbf{13.01\%}$ & $16.41\%$ \\ \midrule
Proposed & $17.63\%$ & $\mathbf{6.42\%}$ & $ 15.45\%$ & $\mathbf{1.18\%}$ & $12.98\%$ & $\mathbf{0.68\%}$ & $11.91\%$ & $\mathbf{3.37\%}$ \\
\bottomrule
\end{tabular}%
\end{table*}
but from that i'm missing these vertical lines,
how to fix this? Thank you for your answers.
\multicolumn{2}{c|}instead of\multicolumn{2}{c}adds the missing part of the vertical line back. Your table would however look a lot more professional if you would stick to thebooktabsprinciple: No vertical rules in a table. – leandriis Dec 28 '21 at 08:11