Fig. 13

Single-scale skeletons (Sect. 2.4). Red and yellow pixels belong to a clean reconstructed filament, whereas the blue pixels have been set to zero during the cleaning. The filament is measured at each pixel in the four main directions to determine the direction where the filament has the smallest half-maximum width. Along those directions (indicated by short straight lines), the brightest pixels (marked by yellow color) belong to the filament’s crest and define the skeleton.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.