# IsolatedConnectedImageFilter

**URL:** https://discourse.itk.org/t/isolatedconnectedimagefilter/2429
**Category:** Beginner Questions
**Created:** [November 20, 2019, 2:59pm UTC](https://discourse.itk.org/t/isolatedconnectedimagefilter/2429 "2019-11-20T14:59:40Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![abir](https://discourse.itk.org/user_avatar/discourse.itk.org/abir/32/1031_2.png) [@abir](https://discourse.itk.org/u/abir)
#### Post date: [November 20, 2019, 2:59pm UTC](https://discourse.itk.org/t/isolatedconnectedimagefilter/2429/1 "2019-11-20T14:59:40Z")

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I have been working on an exemple of segmentation, for this exemple a threshold must be provided :: isolatedConnected-\>SetLower( lowerThreshold )  
So can any one give me an idea how can I specify this threshold for my image  
and thank you in advance .

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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: [November 20, 2019, 8:15pm UTC](https://discourse.itk.org/t/isolatedconnectedimagefilter/2429/2 "2019-11-20T20:15:37Z")

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Thresholds are always content-specific. Take a look a the image in a viewer (e.g. [Slicer](https://www.slicer.org/)), examine the intensities of the organs of interest, and that will give you an idea of what values you should supply as thresholds.