## 3 Results
\begin{table}
\begin{tabular}{c c} \hline \hline
**Biomechanical Features** & **Avg Error \(\pm\) SD \%** \\ \hline Minimum distance between brushstrokes & 99.31 \(\pm\) 1.08 \\ Minimum in-air time & 95.34 \(\pm\) 1.96 \\ Standard deviation of in-air time & 49.21 \(\pm\) 27.33 \\ Standard deviation of on-screen time & 30.71 \(\pm\) 14.82 \\ Standard deviation of brushstroke length & 28.84 \(\pm\) 11.60 \\ Maximum on-screen time & 24.95 \(\pm\) 23.95 \\ Average fluency & 22.76 \(\pm\) 15.66 \\ Average on-screen time & 22.71 \(\pm\) 15.70 \\ Average brushstroke length & 22.69 \(\pm\) 15.70 \\ Average in-air time & 22.02 \(\pm\) 15.52 \\ Maximum brushstroke length & 21.04 \(\pm\) 20.22 \\ Average distance between brushstrokes & 18.60 \(\pm\) 5.76 \\ Average brushstroke width & 15.45 \(\pm\) 10.81 \\ Standard deviation of brushstroke height & 14.21 \(\pm\) 4.05 \\ Minimum brushstroke length & 11.12 \(\pm\) 24.86 \\ Minimum on-screen time & 10.77 \(\pm\) 22.68 \\ Average acceleration & 12.66 \(\pm\) 15.19 \\ Standard deviation of brushstroke width & 6.26 \(\pm\) 5.61 \\ Maximum brushstroke height & 6.04 \(\pm\) 12.42 \\ Minimum brushstroke width & 5.75 \(\pm\) 12.85 \\ Average brushstroke height & 4.98 \(\pm\) 3.97 \\ Maximum brushstroke width & 4.07 \(\pm\) 9.10 \\ Standard deviation of distance between brushstrokes & 2.88 \(\pm\) 1.81 \\ Minimum brushstroke height & 1.72 \(\pm\) 3.84 \\ In-air/on-surface time ratio & 0.99 \(\pm\) 0.61 \\ Total in-air time & 0.92 \(\pm\) 0.60 \\ Maximum distance between brushstrokes & 0.88 \(\pm\) 1.76 \\ Total stop time & 0.27 \(\pm\) 0.05 \\ Maximum in-air time & 0.23 \(\pm\) 0.51 \\ Standard deviation of acceleration & 0.13 \(\pm\) 0.19 \\ Total on-screen time & 0.06 \(\pm\) 0.02 \\ Average velocity & 0.05 \(\pm\) 0.02 \\ Standard deviation of velocity & 0.04 \(\pm\) 0.08 \\ Total movement time & 0.04 \(\pm\) 0.02 \\ Maximum velocity & 0.00 \(\pm\) 0.00 \\ Maximum acceleration & 0.00 \(\pm\) 0.00 \\ Minimum acceleration & 0.00 \(\pm\) 0.00 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: The error for the tested features, averaged across the five trials of the validation set where the incorrect number of strokes was algorithmically identified. Features are sorted according to their corresponding average error from highest to lowest. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Trial** & **Image** & \
\begin{tabular}{c} **Number of Actual** \\ **Segments** \\ \end{tabular} &
\begin{tabular}{c} **Number of Detected** \\ **Segments** \\ \end{tabular} \\ \hline
11 & yoda & 26 * & 28 * \\
12 & yoda & 26 & 26 \\
13 & lego & 31 & 31 \\
14 & lego & 33 & 33 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: _Cont._by erroneously detected strokes, with an error ranging from 0.04% to 49.21%. However, measurements related to total times (such as total stop time, total movement time, total on-screen time, and total in-air time) demonstrated an error of approximately 0.92% or less. Kinematic features were the least affected compared to spatial and temporal features. All kinematic features generally had error rates less than 1%, except the average fluency and acceleration which had discrepancies of 22.76% and 12.66%, respectively.