# How to remove a border around a region in a microscopy image

**URL:** https://discourse.vtk.org/t/how-to-remove-a-border-around-a-region-in-a-microscopy-image/12528
**Category:** Support
**Created:** [October 24, 2023, 11:14am UTC](https://discourse.vtk.org/t/how-to-remove-a-border-around-a-region-in-a-microscopy-image/12528 "2023-10-24T11:14:52Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![bkocev](https://discourse.vtk.org/user_avatar/discourse.vtk.org/bkocev/32/7867_2.png) [@bkocev](https://discourse.vtk.org/u/bkocev)
#### Post date: [October 24, 2023, 11:14am UTC](https://discourse.vtk.org/t/how-to-remove-a-border-around-a-region-in-a-microscopy-image/12528/1 "2023-10-24T11:14:52Z")

</div>

Hi everyone,

I am loading a microscopy image using OpenSlide and trying to visualize it using VTK. Unfortunately, I get a region border visualized around the individual regions in the image:

 ![image](https://discourse.vtk.org/uploads/default/original/2X/3/3577a30890be565f26b5b1340c1c0b5e57f71530.jpeg)

The data is the following: [https://openslide.cs.cmu.edu/download/openslide-testdata/Mirax/CMU-3.zip](https://openslide.cs.cmu.edu/download/openslide-testdata/Mirax/CMU-3.zip).

If I load the data in QuPath, I do not see such borders.

Any idea what could be the problem?

Thank you and kind regards.