\begin{figure}[ht!]
\centering
\begin{minipage}[]{0.46\textwidth}
\centering
    \captionof{table}{\small{Energy minimization for image denoising at 50th
    iteration with $4$, $8$, $16$ connections
    (all numbers divided by $10^3$). Our ISGMR or TRWP performs best.
    }}
    \begin{tabular}{l||c|c}
      \hline
      \multicolumn{1}{c||}{\multirow{1}{*}{\textbf{Method}}}
      & \multicolumn{1}{c|}{\textbf{Penguin}}
      & \multicolumn{1}{c}{\textbf{House}} \\
      \hline \hline
      MF-4 & 46808 & 50503 \\
      SGM-4 & 31204 & 66324 \\
      TRWS-4 & \underline{15361} & \underline{37572} \\
      ISGMR-4 (ours) & 16514 & 37603 \\
      TRWP-4 (ours) & \lgray 15358 & \lgray 37552 \\
      \hline
      MF-8 & 21956 & 47831 \\
      SGM-8 & 37520 & 76079 \\
      ISGMR-8 (ours) & \lgray 15899 & \lgray 39975 \\
      TRWP-8 (ours) & \underline{16130} & \underline{40209} \\
      \hline
      MF-16 & 20742 & 55513 \\
      SGM-16 & 47028 & 87457 \\
      ISGMR-16 (ours) & \lgray 17035 & \lgray 46997 \\
      TRWP-16 (ours) & \underline{17516} & \underline{47825} \\
      \hline
    \end{tabular}
    \label{tb:denoise}
\end{minipage}
~
\begin{minipage}[]{0.52\textwidth}
\centering
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_input.png}
    \minisubcaption{a}{noisy}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_gt.png}
    \minisubcaption{b}{GT}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_MeanField_iter_50_TQ_trunc_200_dir_16_rho_1.png}
    \minisubcaption{c}{MF-16}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_SSGM_iter_1_TQ_trunc_200_dir_4_rho_1.png}
    \minisubcaption{d}{1 SGM-4}
    \end{subfigure}
    \\
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_SGM_iter_50_TQ_trunc_200_dir_4_rho_1.png}
    \minisubcaption{e}{SGM-4}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_TRWS.png}
    \minisubcaption{f}{TRWS-4}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_ISGMR_iter_50_TQ_trunc_200_dir_8_rho_1.png}
    \minisubcaption{g}{ISGMR-8}
    \end{subfigure}
    %
    \begin{subfigure}[b]{0.22\textwidth}
    \includegraphics[width=\textwidth]{denoise/penguin/penguin_TRWP_iter_50_TQ_trunc_200_dir_4_rho_0.5.png}
    \minisubcaption{h}{TRWP-4}
    \end{subfigure}
    \captionof{figure}{\small{Penguin denoising
    corresponding to the minimum energies marked with gray color in \mytb{tb:denoise}.
    ISGMR-8 and TRWP-4 are our proposals.
    }}
    \label{fig:denoise}
\end{minipage}
\end{figure}