new threshold tool does not work for float images with values < 1

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Thresholding tool is working with single threshold value (mitkBinaryThresholTool). The issue with the tool that uses two thresholds (mitkBinaryThresholdULTool) is due to casting the slider values to int. A solution would be to use the same appraoch as BinaryThresholdTool for its slider.

New remote branch pushed: bug-15876-threshold-tool-with-float-images

[0c119d]: Merge branch 'bug-15876-ThresholdTool-fix-for-float-images'

Merged commits:

2013-10-18 11:50:18 Tobias Schroeder [d509a3]
Merge branch 'bug-15876-threshold-tool-with-float-images' into bug-15876-ThresholdTool-fix-for-float-images

Conflicts:
Modules/Segmentation/Interactions/mitkBinaryThresholdULTool.cpp

2013-10-18 09:38:34 Tobias Schroeder [df7224]
Fix compile error on MacOS.

2013-09-04 17:46:47 Tobias Schroeder [22d754]
Fix for 4D images.

2013-09-04 16:33:28 Tobias Schroeder [18a0a0]
Fixed Thresholding for float images.

There were some casts to integer for the slider values. So in case of an
image with values < 1.0 this led to wrong results. Also for thresholding
by itk filter the pixel type was set to int.