deletions | additions       diff --git a/subsection_Fiducial_Markers_label_sec__.tex b/subsection_Fiducial_Markers_label_sec__.tex  index ea8ab28..daac143 100644  --- a/subsection_Fiducial_Markers_label_sec__.tex  +++ b/subsection_Fiducial_Markers_label_sec__.tex 
...
triangulation methods. The positions of the markers in  an image are usually determined using local thresholding, which identifies salient image  regions. The positions are further refined by removing improbable shapes,  yielding an adjusted version of possible marker positions. Figure~\ref{fig:aruco} shows examples of fiducial markers from the ArUco library~\cite{aruco2014}.  During flight, motion blur and varying distances can hinder the  detection of markers. Moreover, these markers might be considered as