## 3 Results and Discussion
### Time Series Features--Transferability Analysis
The lower right corner of the diagram is thus the point that represents the optimum between both statistical quantities. The closer a time series feature lies to this optimum, the more relevant is the time series feature for all study areas. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Z-Score VV**} & \multicolumn{2}{c}{**Z-Score VH**} & \multicolumn{2}{c}{**Z-Score VV +**} & \multicolumn{2}{c}{**Z-Score VV –**} & \multicolumn{2}{c}{**Z-Score VV/VH**} \\  & & & & & \multicolumn{2}{c}{**VH**} & \multicolumn{2}{c}{**VH**} & \multicolumn{2}{c}{**VH**} & \\ \cline{2-10} \multirow{-2}{*}{Namibia} & UA & PA & UA & PA & UA & PA & UA & PA & UA & PA \\ \cline{2-10}  & 88.72 & 78.43 & 47.11 & 90.52 & 85.64 & 82.38 & 92.62 & 69.96 & 67.90 & 86.92 \\ \cline{2-10}  & 82.26 & 92.65 & 51.26 & 99.30 & 78.28 & 90.09 & 52.37 & 99.24 & 44.46 & 99.50 \\ \cline{2-10}  & North Greece & 76.83 & 28.18 & 50.34 & 0.81 & 65.85 & 3.26 & 37.10 & 4.71 & 68.58 & 56.72 \\ \cline{2-10}  & South Greece & 96.10 & 77.17 & 35.25 & 42.22 & 94.89 & 53.17 & 90.37 & 89.52 & 60.85 & 93.48 \\ \cline{2-10}  & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \cline{2-10}  & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \cline{2-10}  & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \hline \hline \end{tabular}
\end{table} 
Table 7: The accuracy values PA and UA of the pixel-based classification for the individual study areas as a function of the five analyzed time series features. The relevant time series features for the individual study areas, which were identified by the Random Forest Algorithm (Section 3.1) and corresponding PA and UA values are highlighted in dark green. Optimum of statistical variables (mean value of UA / PA and coefficient of variables) for time series features is highlighted in light green. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Z-Score VV**} & \multicolumn{2}{c}{**Z-Score VH**} & \multicolumn{2}{c}{**Z-Score VV +**} & \multicolumn{2}{c}{**Z-Score VV –**} & \multicolumn{2}{c}{**Z-Score VV/VH**} \\  & & & & & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} \\ \cline{2-10}  & UA & PA & UA & PA & UA & PA & UA & PA & UA & PA & UA & PA \\ \cline{2-10} Namibia & 84.05 & 80.71 & 49.26 & 17.47 & 84.37 & 5.99 & 54.93 & 89.29 & 76.1 & 91.2 \\ \cline{2-10} China & 82.38 & 92.65 & 62.51 & 92.46 & 83.01 & 91.23 & 66.68 & 97.06 & 42.86 & 97.86 \\ \cline{2-10} North Greece & 73.86 & 6.32 & 50.35 & 0.82 & 65.99 & 3.29 & 48.61 & 2.92 & 68.75 & 57.22 \\ \cline{2-10} South Greece & 97.05 & 87.81 & 26.90 & 31.64 & 98.52 & 75.19 & 92.17 & 90.09 & 65.20 & 92.74 \\ \cline{2-10} Mean values of & 75.57 & & 41.43 & & 63.44 & & 67.72 & & 73.99 \\ \cline{2-10} UA and PA & & & & & & & & & & \\ \cline{2-10} Coefficient of & 0.31 & & 0.62 & & 0.52 & & 0.40 & & 0.19 \\ \cline{2-10} variance & & & & & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The accuracy values PA and UA of the object-based classification for the individual study areas as a function of the five analyzed time series features. The relevant time series features for the individual study areas, which were identified by the Random Forest Algorithm (Section 3.1) and corresponding PA and UA values are highlighted in dark green. Optimum of statistical variables (mean value of UA / PA and coefficient of variables) for time series features is highlighted in light green.