# How to open Segmentation.seg.nrrd file using vtk

**URL:** <https://discourse.slicer.org/t/how-to-open-segmentation-seg-nrrd-file-using-vtk/7791>\
**Category:** Support\
**Created:** [July 29, 2019, 12:21am UTC](https://discourse.slicer.org/t/how-to-open-segmentation-seg-nrrd-file-using-vtk/7791 "2019-07-29T00:21:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kscript](https://avatars.discourse-cdn.com/v4/letter/k/ec9cab/32.png) [@kscript](https://discourse.slicer.org/u/kscript)\
**Post date:** [July 29, 2019, 12:21am UTC](https://discourse.slicer.org/t/how-to-open-segmentation-seg-nrrd-file-using-vtk/7791/1 "2019-07-29T00:21:20Z")

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Hi.  
I posted the following question last week.  
https://discourse.slicer.org/t/why-does-the-color-of-the-label-map-change-when-i-save-the-label-map/7770  
And i have another question.  
How to Open Segmentation.seg.nrrd file using vtk.  
I already created a program that can open nrrd files and i trying to open Segmentation.seg.nrrd. but i cannot open.  
Thank you for your interest.

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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:** [July 29, 2019, 3:21am UTC](https://discourse.slicer.org/t/how-to-open-segmentation-seg-nrrd-file-using-vtk/7791/2 "2019-07-29T03:21:47Z")

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See my answer here: [Why does the color of the label map change when I save the label map?](https://discourse.slicer.org/t/why-does-the-color-of-the-label-map-change-when-i-save-the-label-map/7770/4)