diff --git a/body.tex b/body.tex index 330bda2..4b2a633 100644 --- a/body.tex +++ b/body.tex @@ -853,15 +853,42 @@ similarities and differences between both approaches. For this comparison, 0.2 confidence threshold is applied. Furthermore, Bayesian SSD uses non-maximum suppression and dropout with 0.9 keep ratio. -\begin{figure}[ht] - \centering - \includegraphics[width=0.5\textwidth]{COCO_val2014_000000336587} - \caption{Image with stop sign and a truck at the right edge. Origin of the image is the top left corner.} - \label{fig:stop-sign-truck} +\begin{figure} + \begin{minipage}[t]{0.48\textwidth} + \includegraphics[width=\textwidth]{COCO_val2014_000000336587_bboxes_vanilla} + \caption{Image with stop sign and truck at right edge. Ground truth in blue and predictions in red. Predictions are from vanilla SSD.} + \label{fig:stop-sign-truck-vanilla} + \end{minipage}% + \hfill + \begin{minipage}[t]{0.48\textwidth} + \includegraphics[width=\textwidth]{COCO_val2014_000000336587_bboxes_bayesian} + \caption{Image with stop sign and truck at right edge. Ground truth in blue and predictions in red. Predictions are from Bayesian SSD with 0.9 keep ratio.} + \label{fig:stop-sign-truck-bayesian} + \end{minipage} \end{figure} -In the ground truth, only a stop sign and a truck are detected in figure \ref{fig:stop-sign-truck}. The truck is neither detected by vanilla nor Bayesian SSD. Instead both detected a pottet plant and a traffic light. -The stop sign is detected by both variants. +In the ground truth, only a stop sign and a truck are detected. The differences between vanilla SSD and Bayesian SSD are almost not visible +(see figures \ref{fig:stop-sign-truck-vanilla} and \ref{fig:stop-sign-truck-bayesian}). The truck is neither detected by vanilla nor Bayesian SSD. Instead both detected a pottet plant and a traffic light. The stop sign is detected by both variants. +This behaviour implies problems with detecting objects at the edge +that overwhelmingly lie outside the image frame. Furthermore, the predictions are usually identical - when rounding to three digits. + +\begin{figure} + \begin{minipage}[t]{0.48\textwidth} + \includegraphics[width=\textwidth]{COCO_val2014_000000403817_bboxes_vanilla} + \caption{Image with a cat and laptop/TV. Ground truth in blue and predictions in red. Predictions are from vanilla SSD.} + \label{fig:cat-laptop-vanilla} + \end{minipage}% + \hfill + \begin{minipage}[t]{0.48\textwidth} + \includegraphics[width=\textwidth]{COCO_val2014_000000403817_bboxes_bayesian} + \caption{Image with a cat and laptop/TV. Ground truth in blue and predictions in red. Predictions are from Bayesian SSD with 0.9 keep ratio.} + \label{fig:cat-laptop-bayesian} + \end{minipage} +\end{figure} + +Another example (see figures \ref{fig:cat-laptop-vanilla} and \ref{fig:cat-laptop-bayesian}) is a cat with a laptop/TV in the background on the right +side. Both variants detect a cat but the vanilla variant detects a dog as well. The laptop and TV are not detected but this is expected since +the classes were not trained. \chapter{Discussion and Outlook} diff --git a/images/COCO_val2014_000000336587_bboxes_bayesian.png b/images/COCO_val2014_000000336587_bboxes_bayesian.png new file mode 100644 index 0000000..bf06ab8 Binary files /dev/null and b/images/COCO_val2014_000000336587_bboxes_bayesian.png differ diff --git a/images/COCO_val2014_000000336587_bboxes_vanilla.png b/images/COCO_val2014_000000336587_bboxes_vanilla.png new file mode 100644 index 0000000..5127c73 Binary files /dev/null and b/images/COCO_val2014_000000336587_bboxes_vanilla.png differ diff --git a/images/COCO_val2014_000000403817_bboxes_bayesian.png b/images/COCO_val2014_000000403817_bboxes_bayesian.png new file mode 100644 index 0000000..a014aee Binary files /dev/null and b/images/COCO_val2014_000000403817_bboxes_bayesian.png differ diff --git a/images/COCO_val2014_000000403817_bboxes_vanilla.png b/images/COCO_val2014_000000403817_bboxes_vanilla.png new file mode 100644 index 0000000..bf0eba9 Binary files /dev/null and b/images/COCO_val2014_000000403817_bboxes_vanilla.png differ