# ITK octree

**URL:** https://discourse.itk.org/t/itk-octree/3185
**Category:** Beginner Questions
**Created:** [June 14, 2020, 12:27am UTC](https://discourse.itk.org/t/itk-octree/3185 "2020-06-14T00:27:17Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![rolof](https://discourse.itk.org/letter_avatar_proxy/v4/letter/r/41988e/32.png) [@rolof](https://discourse.itk.org/u/rolof)
#### Post date: [July 9, 2020, 12:35am UTC](https://discourse.itk.org/t/itk-octree/3185/7 "2020-07-09T00:35:41Z")

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I tested the Maurer filter, I saw that it is only suitable for a binary image, do you know if there is another filter to multi labeled image. I mean imagine the case that you have three types of voxels in an image, 0: Background, 1:object\_1, 2:object\_2, and you want to compute the euclidean distance for all the points of object\_1 to object\_2 ignoring the computations of the background. Currently, with the Maurer filter, I do not know how to achieve that.

Thanks in advance!

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