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MultiLabel segmentation mapper is very slow
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The implementation of multi label segmentations seems to be rather slow. Profiling mitk Workbench in release mode brought up an time consumption by the 2D mapper of ~0.1 sec and the profiler indicates that a substantial amount of time is spend in the mapper.
Having e.g. a workbench with the StdMultiWidget editor and two segmentations lead to an update duration of ~0.4 sec per position change. So we get only ~2 frames per second when moving the current position arround.
This is quite laggy.

If one removes the multi lable segmentations we are achive a much higher frame rate. Normal segmentations do not have such an problematic impact.

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kislinsk added a subscriber: kislinsk.

Typical candidate is unnecessary generation of data becasuse timestamps are not utilized to their fullest in a mapper.

floca raised the priority of this task from Low to High.Jun 3 2020, 11:16 PM

As discussed we bump the priority as it has serious impact onthe UX.

kislinsk lowered the priority of this task from High to Normal.Jul 22 2020, 10:45 AM

Should be discussed with regards to changes made in T26959 / D594.