\begin{table}%T1
\caption{\label{tab_psnr_pol_dust}Error (in dB) for both the $Q$ and $U$ components between the original dust image and  respectively 
its noisy version and the results obtained by hard thresholding representations of the noisy data in different dictionaries.}
\small%\centering
\par
\begin{tabular}{l|ccccc}
\hline\hline
$Q$ Component   &                    &  &  & &  \\      
   Noisy image   & $20.01$    &   $13.98$   &   $6.03$     &   $-0.007$   &   $-6.02$   \\      \hline  
  $QU-UWT$ 	&  $34.91$   &   $32.41$   &   $28.88$   &   $26.41$    &	$23.68$ \\
  $EB-UWT$ 	&   $33.52$   &  $30.63$   &   $27.83$   &  $25.86$     &	$23.91$   \\
  $QU-CUR$           &   $34.14$   &  $ 31.12$     &    $28.56$   &  $26.58$  &	 $24.56$   \\
  $EB-CUR$           &    $ 33.36$   &  $30.60$   &    $28.17$   &  $26.30$    &   $ 23.99$    \\   
{\it OWT} 	       &   $34.07$   & $30.77$   &    $27.08$   &   $24.57$   &    $21.33$     \\    
Mod-phase     &    $30.51$    & $26.42$  &     $20.97$   &    $16.25$  &   $11.05$  \\
\hline
$U$ Component  &                 &  &  & &                \\      
Noisy image   & $19.99$    &   $13.97$   &   $6.01$     &   $-0.001$      &   $-6.01$   \\      \hline  
  $QU-UWT$           &   $40.88$   &   $39.22$   &   $36.77$   &   $35.50$     &   $31.90$ \\
  $EB-UWT$ 	&   $38.80$   &  $36.71$   &   $35.41$   &  $34.67$       &   $32.23$  \\
  $QU-CUR$           &   $39.54$   &  $ 37.85$     &    $36.68$   &  $35.83$    & $32.38$     \\
  $EB-CUR$ 	&    $39.64$   &  $ 37.72$   &    $35.33$   &  $33.51$    &  $29.30$    \\     
{\it OWT}                   &   $39.18$    & $37.29$   &    $33.30$   &   $29.06$   &    $23.56$   \\ 
Mod-phase     &    $30.76$    & $26.81$  &     $21.31$   &    $16.83$  &   $11.36$  \\   
\hline
\end{tabular}
\par
\end{table}