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- \section{results}
-
- \subsection{Overall ROC}
- The overall ROC can be found in Figure \ref{fig:overallROC}. With a false acceptance rate of 0,05, The overall recognition performance is above 99,88\%
- \begin{figure}[ht]
- \centering
- \includegraphics[width=.8\linewidth]{image/final_ROC_log}
- \caption{ The overall ROC}
- \label{fig:overallROC}
- \end{figure}
-
- \subsection{Individual ROC’s}
- 18 out of the 31 individuals have a perfect ROC. Which means that the highest impostor score is lower than the lowest genuine score. An example of a perfect ROC can be found in Figure \ref{fig:nd1S04934_ROC}. All images from these 18 individuals are analyzed. In all of these images the person looks direct into the camera. A part of the eyes is visible and no parts of the face are covered. All images have a relative high resolution of 1704~by~2272 pixels.
- \begin{figure}[ht]
- \centering
- \includegraphics[width=.8\linewidth]{image/nd1S04934_ROC}
- \caption{A perfect ROC}
- \label{fig:nd1S04934_ROC}
- \end{figure}
- Not all ROC’s are perfect. In Figure \ref{fig:nd1S04341_ROC} is the ROC of subject nd1S04341. This deviation is caused by one matching score of zero. In figure \ref{fig:nd1S04341} are the corresponding pictures. The main difference between this pictures is the visibility of the ears, further are there no significate difference.
- \begin{figure}[ht]
- \centering
- \includegraphics[width=.8\linewidth]{image/nd1S04341_ROC}
- \caption{ROC of subject nd1S04341}
- \label{fig:nd1S04341_ROC}
- \end{figure}
- \begin{figure}[ht]
- \begin{minipage}[th]{.45\linewidth}
- \centering
- \vspace{0pt}
- \includegraphics[width=\linewidth]{image/04341d147}
- \end{minipage}\hfill
- \begin{minipage}[th]{.45\linewidth}
- \centering
- \vspace{0pt}
- \includegraphics[width=\linewidth]{image/04341d154}
- \end{minipage}\hfill
- \caption{Pictures of subject nd1S04341}
- \label{fig:nd1S04341}
- \end{figure}
- Another interesting result is the impact of visibility of the face. A expamle is subject nd1S04406, the ROC of this subject can be found in Figure 6. There are a few genuine scores which a relative low. One of these matching scores in the matching score between the pictures in Figure 6. There are a few differences between these pictures. The first is the visibility of the left part of the face. In the left picture a bigger part of the face is covered with hair. Another significate diffent is the visablity of the ears. Furthermore, only in the left picture, the teeth are shown.
- \begin{figure}[ht]
- \centering
- \includegraphics[width=.8\linewidth]{image/nd1S04406_ROC}
- \caption{ROC of subject nd1S04406}
- \label{fig:nd1S04406_ROC}
- \end{figure}
- \begin{figure}[ht]
- \begin{minipage}[th]{.45\linewidth}
- \centering
- \vspace{0pt}
- \includegraphics[width=\linewidth]{image/04341d147}
- \end{minipage}\hfill
- \begin{minipage}[th]{.45\linewidth}
- \centering
- \vspace{0pt}
- \includegraphics[width=\linewidth]{image/04341d154}
- \end{minipage}\hfill
- \caption{Pictures of subject nd1S04341}
- \label{fig:nd1S04341}
- \end{figure}
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