## 3 Results and Discussion
### Selecting Optimal Parameters
\begin{table}
\begin{tabular}{c c c c c c} \hline
**Height [m]** & \(p\) [\%] & **q [\%]** & **Severity** & **Wide Error [\%]** & **Depth Error [\%]** & **Volume Error [\%]** \\ \hline \multirow{3}{*}{2} & 80 & 72 & Low & 3.6 & 15.8 & 4.1 \\  & 85 & 77 & Middle & 1.6 & 4.0 & 1.9 \\  & 75 & 68 & High & 1.6 & 2.1 & 5.0 \\ \hline \multirow{3}{*}{5} & 80 & 72 & Low & 0.9 & 26.2 & 6.4 \\  & 80 & 72 & Middle & 1.1 & 11.6 & 7.3 \\  & 80 & 72 & High & 0.5 & 10.2 & 5.5 \\ \hline \multirow{3}{*}{8} & 80 & 72 & Low & 1.5 & 44.2 & 48.6 \\  & 80 & 72 & Middle & 4.5 & 6.0 & 34.1 \\  & 80 & 72 & High & 1.24 & 6.2 & 31.5 \\ \hline \multirow{3}{*}{10} & 80 & 72 & Low & 2.7 & 57.7 & 68.6 \\  & 75 & 68 & Middle & 0.6 & 2.6 & 36.8 \\  & 80 & 72 & High & 0.3 & 1.4 & 35.7 \\ \hline \multirow{3}{*}{15} & 80 & 72 & Low & 6.7 & 95.1 & 84.8 \\  & 80 & 72 & Middle & 3 & 30.2 & 39.1 \\  & 80 & 72 & High & 0.8 & 12.7 & 33.9 \\ \hline \multirow{3}{*}{20} & 80 & 72 & Low & 16.2 & 93.8 & 95 \\  & 80 & 72 & Middle & 3.5 & 57 & 65.4 \\  & 80 & 72 & High & 1.6 & 24.1 & 41.2 \\ \hline \multirow{3}{*}{25} & 75 & 68 & Low & 39 & 64.8 & 99.5 \\  & 75 & 68 & Middle & 8.93 & 70.2 & 94.8 \\  & 75 & 68 & High & 5.4 & 64.8 & 94.7 \\ \hline \multirow{3}{*}{30} & 75 & 68 & Low & 52.3 & 98.8 & 99.4 \\  & 75 & 68 & Middle & 16.5 & 79.6 & 96.5 \\  & 90 & 81 & High & 5.7 & 82.5 & 90.2 \\ \hline \multirow{3}{*}{40} & - & - & Low & - & - & - \\  & 85 & 77 & Middle & 47 & 99 & 100 \\ \cline{1-1}  & 90 & 81 & High & 11.4 & 92.2 & 97.8 \\ \hline \end{tabular}
\end{table} 
Table 4: Recommended overlap by height associated with severity level of interest to be measured; \(p\) is longitudinal overlap and q is transverse overlap. \begin{table}
\begin{tabular}{c c c} \hline \hline  & \multicolumn{2}{c}{(a)} \\ \hline
**Height [m]/GSD [cm/pixel]** & \multicolumn{2}{c}{**Overlap; \(p\) = 75 y q = 68 [\%]**} \\  & **B [m]** & **A [m]** \\ \hline
2/0.05 & 0.5 & 0.9 \\
5/0.13 & 1.2 & 2.3 \\
8/0.21 & 1.9 & 3.7 \\
10/0.27 & 2.4 & 4.7 \\
15/0.40 & 3.6 & 7.0 \\
20/0.53 & 4.9 & 9.3 \\
25/0.67 & 6.1 & 11.7 \\
30/0.80 & 7.3 & 14.0 \\
40/1.07 & 9.7 & 18.7 \\ \hline  & \multicolumn{2}{c}{(b)} \\ \hline
**Height [m]/GSD [cm/pixel]** & \multicolumn{2}{c}{**Overlap; \(p\) = 80 y q = 72 [\%]**} \\  & **B [m]** & **A [m]** \\ \hline
2/0.05 & 0.4 & 0.8 \\
5/0.13 & 1.0 & 2.0 \\
8/0.21 & 1.6 & 3.3 \\
10/0.27 & 1.9 & 4.1 \\
15/0.40 & 2.9 & 6.1 \\
20/0.53 & 3.9 & 8.2 \\
25/0.67 & 4.9 & 10.2 \\
30/0.80 & 5.8 & 12.2 \\
40/1.07 & 7.8 & 16.3 \\ \hline  & \multicolumn{2}{c}{(c)} \\ \hline
**Height [m]/GSD [cm/pixel]** & \multicolumn{2}{c}{**Overlap; \(p\) = 85 y q = 77 [\%]**} \\  & **B [m]** & **A [m]** \\ \hline
2/0.05 & 0.3 & 0.7 \\
5/0.13 & 0.7 & 1.7 \\
8/0.21 & 1.2 & 2.7 \\
10/0.27 & 1.5 & 3.4 \\
15/0.40 & 2.2 & 5.0 \\
20/0.53 & 2.9 & 6.7 \\
25/0.67 & 3.6 & 8.4 \\
30/0.80 & 4.4 & 10.1 \\
40/1.07 & 5.8 & 13.4 \\ \hline  & \multicolumn{2}{c}{(d)} \\ \hline
**Height [m]/GSD [cm/pixel]** & \multicolumn{2}{c}{**Overlap; \(p\) = 90 y q = 81 [\%]**} \\  & **B [m]** & **A [m]** \\ \hline
2/0.05 & 0.2 & 0.6 \\
5/0.13 & 0.5 & 1.4 \\
8/0.21 & 0.8 & 2.2 \\
10/0.27 & 1.0 & 2.8 \\
15/0.40 & 1.5 & 4.2 \\
20/0.53 & 1.9 & 5.5 \\
25/0.67 & 2.4 & 6.9 \\
30/0.80 & 2.9 & 8.3 \\
40/1.07 & 3.9 & 11.1 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Recommended distances to meet optimal height overlap. (a) \(p\) = 75, q = 68 [\%]; (b) \(p\) = 80, q = 72 [\%]; (c) \(p\) = 85, q = 77 [\%]; (d) \(p\) = 90, q = 81 [\%].