diff options
Diffstat (limited to 'experimental.tex')
| -rw-r--r-- | experimental.tex | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/experimental.tex b/experimental.tex index 127cd78..dfd4916 100644 --- a/experimental.tex +++ b/experimental.tex @@ -32,16 +32,16 @@ state-of-the-art, we use it to perform our data collection. \subsection{Data set} The original dataset consists of the sequence of all the frames where -a skeleton was detected by the Microsoft SDK. For each frames the +a skeleton was detected by the Kinect SDK. For each frames the following data is available: \begin{itemize} \item the 3D coordinates of 20 body joints -\item a picture recored by the video camera +\item a color picture recorded by the video camera \end{itemize} For some of frames, one or several joints are occluded by another part of the body. In those cases, the coordinates of these joints are either absent from the frame or present but tagged as \emph{Inferred} -by the Microsoft SDK. It means that even though the joint is not +by the Kinect SDK. It means that even though the joint is not present on the frame, the skeleton-fitting algorithm is able to guess its location. @@ -64,17 +64,17 @@ Several reductions are then applied to the data set to extract computed. These are distances between two contiguous joints in the human body. If one of the two joints of a body part is not present or inferred in a frame, the corresponding body part is reported as - absent for that frame. + absent for the frame. \item the number of features is then reduced to 9 by using the vertical symmetry of the human body: if two body parts are symmetric about the vertical axis, we bundle them into one feature by averaging their lengths. If only one of them is present, we take the value of its counterpart. If none of them are present, the feature - is reported as missing for this frame. The resulting nine features + is reported as missing for the frame. The resulting nine features are: Head-ShoulderCenter, ShoulderCenter-Shoulder, Shoulder-Elbow, Elbow-Wrist, ShoulderCenter-Spine, Spine-HipCenter, HipCenter-HipSide, HipSide-Knee, Knee-Ankle. -\item finally, all the frames where one of the 9 features is missing +\item finally, all the frames where any of the 9 features is missing are filtered out. \end{itemize} @@ -82,9 +82,15 @@ Table \ref{tab:dataset} summarizes some statistics about the resulting dataset. \begin{table} -\begin{tabular}{cc} - +\begin{center} +\begin{tabular}{l|r||l|l|l} +Number of people & 25 & $k\leq 5$ & $5\leq k\leq 20$ & $k\geq 20$\\ +\hline +Number of frames & 15945 & 1211 & 561 & 291 \\ +\hline +Number of runs & 244 & \\ \end{tabular} +\end{center} \caption{} \label{tab:dataset} \end{table} |