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[projects] checked Jan B and Lukas projects

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Jan Benda
2021-02-01 14:52:56 +01:00
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projects/project_eyetracker/eyetracker.tex
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@@ -9,12 +9,10 @@
\input{../instructions.tex}
%%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
\section*{Analysis of eye trajectories.}
In this project you will analyze eye-tracking data (courtesy of Gregor Hardiess,
Cognitive Neuroscience, Uni-T\"ubingen). In this task subjects were viewing
biblical images while their eye movements were recorded.
In this project you will analyze eye-tracking data (courtesy of Gregor
Hardiess, Cognitive Neuroscience, Uni-T\"ubingen). In this task
subjects were viewing biblical images while their eye movements were
recorded.
In the accompanying datasets you find a subject's eye tracking data when viewing two different images
(\emph{Genesis\_VIII.png} and \emph{Genesis\_XXXIX.png}, files \verb+1_1.mat+ and \verb+1_2.mat+, respectively). Each \verb+mat+-file contains five variables: \verb+frame_index+, the \verb+gaze_x+ and \verb+gaze_y+ position (in pixel on the screen), a boolean vector \verb+eye_found+ telling whether the tracker could actually estimate the eye position, and a vector \verb+marker+. The \verb+marker+ is used to indicate sections in the data. 0 can be ignored, 1 marks the fixation period and 2 indicates the acutal trial.
@@ -25,13 +23,17 @@ The eyetracker recorded ey positions with 60\,Hz. The fixation point was shown a
\question Familiarize yourself with the data.
\begin{parts}
\part Cut the data into chunks belonging to the same period (fixation and free eye-movements).
\part Detect problems in the data (e.g. the eye was not found) and correct the eye traces. Interpolate linearily in these sections.
\part Detect problems in the data (e.g. the eye was not found) and correct the eye traces. Interpolate linearily in these sections.
\end{parts}
\question Characterize the eye movements statistically.
\begin{parts}
\part Calculate with eye speed and/or accelerations.
\part Create a 'heatmap' plot of the eye-positions.
\part Detect fixation points in the "free movement" part of the data.
\end{parts}