Fig. 5.


Download original image

Creating a dimming characterization mask. Base difference images (BD) and percentage base difference images (PBD) are transformed into dimming masks. First the BD and PBD images are thresholded and the intersection of these initial masks is obtained. Then only those clusters that overlap with the union of all previous PDMs (see Fig. 4) are kept, creating the total dimming mask. The largest dimming area is extracted and stored as the maximum dimming mask. Both masks are used to extract dimming characteristics by overlaying these with the original BDs. As an example, this procedure is shown for October 23, 2012, 08:28 UTC.

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.