Uncomment and fix `Thresholding` module tests

[jhlegarreta]

Description

Fix and uncomment the itkIntermodesThresholdImageFilterTestNoAutoMinMax and itkOtsuThresholdCalculatorVersusOtsuMultipleThresholdsCalculatorTest tests in the Thresholding module. They were commented to so that the related PR could be moved forward and be merged.

Steps to Reproduce

1. Uncomment itkIntermodesThresholdImageFilterTestNoAutoMinMax and itkOtsuThresholdCalculatorVersusOtsuMultipleThresholdsCalculatorTest tests.
2. Configure and build ITK.
3. Run the tests, e.g.

ctest -V -R itkIntermodesThresholdImageFilterTestNoAutoMinMax -C Debug

and

ctest -V -R itkOtsuThresholdCalculatorVersusOtsuMultipleThresholdsCalculatorTest -C Debug

from the binaries directory.

Expected behavior

Both tests should pass and yield the expected results.

Actual behavior

None of the two tests pass:

• itkIntermodesThresholdImageFilterTestNoAutoMinMax exceeds the allowed number maximum number of smoothing iterations, whatever its value is.
• itkOtsuThresholdCalculatorVersusOtsuMultipleThresholdsCalculatorTest fails when comparing the values of the values yielded by itk::OtsuThresholdsCalculator and the itk::OtsuMultipleThresholdsCalculator instances.

Reproducibility

%100.

Versions

master.

Environment

All environments.

Additional Information

See this comment and the context in PR #511.

@richardbeare may be you have some intuition of what the cause may be.

[stale]

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