In mitk::ImageStatisticsCalculator the histogram calculation is currently limited to fixed boundaries which are set according to Houndsfieldscale from -1024 to 2048.

This is bad for different reasons:

• some Images may have pixelvalues outside of the boundaries
• the image statistics plugin shows correct range in its table view but drawn histogram is limited to the boundaries.

Propose solution: Histogram boundaries should at least correspond to images min and max values.