Download original image
(a) An example of a 3 × 3 pixel neighborhood or patch extracted from the edge of a sunspot in a continuum image and its column representation. (b) The number of patches extracted from each pair of AR images when using the STARA masks.
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.