# How to find and install AnomalousFilters in 3D Slicer 4.13.0?

**URL:** https://discourse.slicer.org/t/how-to-find-and-install-anomalousfilters-in-3d-slicer-4-13-0/20124
**Category:** Support
**Created:** [October 13, 2021, 2:56am UTC](https://discourse.slicer.org/t/how-to-find-and-install-anomalousfilters-in-3d-slicer-4-13-0/20124 "2021-10-13T02:56:13Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![kai.cheng.ias](https://avatars.discourse-cdn.com/v4/letter/k/76d3ee/32.png) [@kai.cheng.ias](https://discourse.slicer.org/u/kai.cheng.ias)
#### Post date: [October 13, 2021, 2:56am UTC](https://discourse.slicer.org/t/how-to-find-and-install-anomalousfilters-in-3d-slicer-4-13-0/20124/1 "2021-10-13T02:56:13Z")

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Hello,

How to find and install AnomalousFilters in 3D Slicer 4.13.0?  
I couldn’t find it in the Extensions Manager.

Thank you.

Kai

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [October 13, 2021, 3:28am UTC](https://discourse.slicer.org/t/how-to-find-and-install-anomalousfilters-in-3d-slicer-4-13-0/20124/2 "2021-10-13T03:28:33Z")

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Slicer-4.13 uses ITK5 and the maintainer of the extension has not updated his code yet to make it compatible with this ITK version - see this bug report:

> <https://github.com/CSIM-Toolkits/AnomalousFiltersExtension/issues/12>
>
> Thank you for these great noise filters.
> 
> Slicer recently switched to ITK5 and… since then we get this error when we try to run the filter:
> 
> \`\`\`
> Anisotropic Anomalous Diffusion standard error:
> 
> C:/Users/andra/AppData/Roaming/NA-MIC/Extensions-28926/AnomalousFiltersExtension/lib/Slicer-4.11/cli-modules/AADImageFilter.exe: exception caught !
> 
> itk::ExceptionObject (00000088D34FB120)
> Location: "unknown" 
> File: d:\\d\\p\\slicer-0-build\\itk\\modules\\core\\common\\include\\itkImageSource.hxx
> Line: 273
> Description: itk::ERROR: itk::ERROR: AnisotropicAnomalousDiffusionImageFilter(0000019115E83E20): Subclass should override this method!!! If old behavior is desired invoke this-\>DynamicMultiThreadingOff(); before Update() is called. The best place is in class constructor.
> \`\`\`
> 
> Could you update the filters to make them compatible with ITK5? Thank you very much.

You can write a comment to this bug report and see if we get any response. You can fix the code yourself, too (you can ask help on the [ITK forum](https://discourse.itk.org), they are always very responsive and could tell you what needs to be changed. If things work on your computer then we can fork the repository and make those fixes, even if we don’t hear from the original maintainer.