# Why ITK v 5.0.1 can not find the fuzzy connectedness method?

**URL:** https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780
**Category:** Beginner Questions
**Created:** [March 4, 2020, 1:27am UTC](https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780 "2020-03-04T01:27:34Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![qiang-zhang-neu](https://discourse.itk.org/letter_avatar_proxy/v4/letter/q/e47774/32.png) [@qiang-zhang-neu](https://discourse.itk.org/u/qiang-zhang-neu)
#### Post date: [March 4, 2020, 1:27am UTC](https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780/1 "2020-03-04T01:27:34Z")

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I want to use fuzzy connectedness method in my project. In the network, it shows that the itk::SimpleFuzzyConnectednessScalarImageFilter is available. However, I can not find a itkSimpleFuzzyConnectednessScalarImageFilter header file. The version of itk is 5.0.1. How can I use fuzzy connectedness method by ITK?

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### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [March 4, 2020, 4:38pm UTC](https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780/2 "2020-03-04T16:38:07Z")

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`itkSimpleFuzzyConnectednessScalarImageFilter` is patented code, and has been removed from ITK about 10 years ago.

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### Author: ![qiang-zhang-neu](https://discourse.itk.org/letter_avatar_proxy/v4/letter/q/e47774/32.png) [@qiang-zhang-neu](https://discourse.itk.org/u/qiang-zhang-neu)
#### Post date: [March 5, 2020, 1:35am UTC](https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780/3 "2020-03-05T01:35:16Z")

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Is there alternative method about fuzzy connectedness in ITK?

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### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [March 5, 2020, 3:49pm UTC](https://discourse.itk.org/t/why-itk-v-5-0-1-can-not-find-the-fuzzy-connectedness-method/2780/4 "2020-03-05T15:49:37Z")

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If you are in a jurisdiction where that method is not patented, you could use the [version from ITK 3.20](https://github.com/InsightSoftwareConsortium/ITK/blob/release-3.20/Code/Patented/itkSimpleFuzzyConnectednessScalarImageFilter.txx).

@zandarina also [wanted to use it](https://discourse.itk.org/t/itksimplefuzzyconnectednessscalarimagefilter-h/1634), maybe she has updated it to compile with current version of ITK?

Alternatively, you could choose another [region growing filter](https://itk.org/Doxygen/html/group__RegionGrowingSegmentation.html).