\begin{table}%t2
\caption{\label{TableParameters}Parameter settings used for the
 three test data sets.}
%\centering
\par
\begin{tabular}{l|l|l|l|l}
\hline  \hline
Param.    &  Meaning                         & Image 1 & Image 2  & Image 3\\\hline
$a$          &  low cut                         & 0      &  149     &    141\\
$b$          &  high cut                        & 1      &  200     &    170\\
$c_{\rm min}$    &  intensity threshold        	& 0.1    &  0.1     &    0.3\\
&for detection	&&&\\
$T$          &  filter parameter                & 15     &  30      &    20\\
$K$          &  edge sensitivity                & 0.0001 &  0.0001  &    0.0001\\
$\sigma$     &  pre-filter parameter             & 2      &  2       &    2\\
$\mu$        &  pre-filter parameter             & 9      &  30      &    15\\ 
&for structure tensor&&&\\ 
$c_{\rm min2}$   &  minimal intensity    &0.1     &  0.2     &    0.2\\  
& diff. from backgr. &&&\\
$c_{\rm ecc}$    &  eccentricity threshold          & 0.7    &  0.7     &    0.7\\
$c_{\rm thick}$  &  thickness threshold             & 16     &  9       &    9\\
\hline
\end{tabular}
\end{table}