# CurvatureAnisotropicDiffusionImageFilterTest failures

**URL:** https://discourse.itk.org/t/curvatureanisotropicdiffusionimagefiltertest-failures/2496
**Category:** Engineering
**Created:** [December 9, 2019, 5:53pm UTC](https://discourse.itk.org/t/curvatureanisotropicdiffusionimagefiltertest-failures/2496 "2019-12-09T17:53:34Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![blowekamp](https://discourse.itk.org/user_avatar/discourse.itk.org/blowekamp/32/79_2.png) [@blowekamp](https://discourse.itk.org/u/blowekamp)
#### Post date: [December 10, 2019, 9:28pm UTC](https://discourse.itk.org/t/curvatureanisotropicdiffusionimagefiltertest-failures/2496/5 "2019-12-10T21:28:42Z")

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@seanm

The `CurvatureAnisotropicDiffusionImageFilterTest` and `LaplacianSharpeningImageFilterTest` differences do not look significant to me.

I think I have seem similar Resampling differences with that test. As I recall this is with the nearest neighbor interpolator, which is numerically problematic when the expected value is close to a rounding boundary. This discourse thread may shed some light:

> [@ResampleImageFilter non-determinism with threading](https://discourse.itk.org/t/resampleimagefilter-non-determinism-with-threading/862/27):
>
> I’m getting the implementation done quickly, but if you are able to work on the evaluation and performance that would be wonderful.

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_[View the full topic](https://discourse.itk.org/t/curvatureanisotropicdiffusionimagefiltertest-failures/2496)._