Fix ImageToContourFilterTest
Summary:
The filter was changed in D672 to accept custom pixel values for
determining the contour. However, this value wasn't initialized
and the calculation for the contour extraction filter was slightly
changed for no obvious reason.
The filter is now fixed to match its previous behaviour when
no custom pixel value is specified.
Ref T29473
Test Plan:
- Run MitkSegmentationTestDriver mitkImageToContourFilterTest
- Use the 3D segmentation interpolation on different labels to check if the preview contours match their source pixels
Reviewers: s434n, O1 MITK Reviewer Group I
Reviewed By: s434n, O1 MITK Reviewer Group I
Maniphest Tasks: T29473
Differential Revision: https://phabricator.mitk.org/D777