# initial contour/surface as the zero level set

**URL:** <https://discourse.itk.org/t/initial-contour-surface-as-the-zero-level-set/751>\
**Category:** Algorithms\
**Tags:** dicom, itkv5\
**Created:** [March 9, 2018, 1:30pm UTC](https://discourse.itk.org/t/initial-contour-surface-as-the-zero-level-set/751 "2018-03-09T13:30:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Abdelkhalek\_Bakkari](https://discourse.itk.org/letter_avatar_proxy/v4/letter/a/977dab/32.png) [@Abdelkhalek\_Bakkari](https://discourse.itk.org/u/Abdelkhalek_Bakkari)\
**Post date:** [March 9, 2018, 1:30pm UTC](https://discourse.itk.org/t/initial-contour-surface-as-the-zero-level-set/751/1 "2018-03-09T13:30:04Z")

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Dear All,

I am trying to adopt the eodesicActiveContourLevelSetImage Filter. However, I don’t know how to create the initial contour/surface using ITK and Qt.

Could you please help me?

Kind regards,

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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 9, 2018, 8:21pm UTC](https://discourse.itk.org/t/initial-contour-surface-as-the-zero-level-set/751/2 "2018-03-09T20:21:14Z")

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Have you seen this [example](https://itk.org/ITKExamples/src/Segmentation/LevelSets/SegmentWithGeodesicActiveContourLevelSet/Documentation.html)? Is is helpful?