The former otsu segmentation performed an otsu segmentation based on one threshold. Now, the itk-otsu-segmentation-filter was replaced by an (itk) multiple-threshold otsu segmentation filter. Moreover, a dialog opens, asking for a number of thresholds. The multiple-threshold-otsu-action was integrated contributing to the blueberry org.mitk.gui.qt.datamanager.contextMenuActions extension point.

Several minor issues still have to be taken care of, e.g. the resulting multi-threshold segmentation image being rendered as a multi-label image rather than a segmentation contour. The latter still has to be discussed by the mitk team.

Another point to consider (as mentioned in the Bugsquashing meeting yesterday) is, that for multiple thresholds the segmentation can take a long time ( long being > 3 minutes) and therefore the user should get some kind of feedback (e.g. messagebox) warning that his desired action is going to take a while.

[64c2c3]: Merge branch 'bug-12485-ApplyOtsuAction'

Merged commits:

2012-08-15 15:04:19 Tobias Norajitra [b587cf]
Added a dialog box that asks the user whether to continue if more then 5 thresholds are selected. Windowing preset implemented according to number of segmented regions. Erased menu entry for former single-threshold otsu segmentation.

2012-08-08 17:43:33 Tobias Norajitra [004c27]
Added multiple-threshold otsu filter action.

2012-08-01 16:52:54 Tobias Norajitra [f58c07]
wip

[f10525]: Merge branch 'bug-12485-ApplyOtsuAction'

Merged commits:

2012-08-15 15:58:27 Tobias Norajitra [8e2234]
COMP: Changed qt message box flag namespaces.

[1f69ba]: Merge branch 'bug-12485-ApplyOtsuAction'

Merged commits:

2012-09-04 17:06:44 Tobias Norajitra [8b3f3d]
COMP: added a cancel button to the Otsu Segmentation Dialog.