# QVTKNativeWidget: Jagged edges on 2D images

**URL:** https://discourse.itk.org/t/qvtknativewidget-jagged-edges-on-2d-images/7682
**Category:** Algorithms
**Tags:** itk
**Created:** [December 17, 2025, 7:21am UTC](https://discourse.itk.org/t/qvtknativewidget-jagged-edges-on-2d-images/7682 "2025-12-17T07:21:26Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Manjunath\_AV](https://discourse.itk.org/user_avatar/discourse.itk.org/manjunath_av/32/4461_2.png) [@Manjunath\_AV](https://discourse.itk.org/u/Manjunath_AV)
#### Post date: [December 17, 2025, 7:21am UTC](https://discourse.itk.org/t/qvtknativewidget-jagged-edges-on-2d-images/7682/1 "2025-12-17T07:21:26Z")

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Hi all,

I’m displaying 2D images using **QVTKNativeWidget** and I’m seeing **zigzag/jagged edges** along high-contrast boundaries. I’ve attached two screenshots:

- **Current issue:** edges look stair-stepped/pixelate

- **Desired output:** smooth edges

[![image](https://discourse.itk.org/images/transparent.png)](https://discourse.vtk.org/uploads/default/original/2X/8/8eb0a4857863606f467285baae78f4ae878ace19.png "image")

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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: [December 17, 2025, 5:53pm UTC](https://discourse.itk.org/t/qvtknativewidget-jagged-edges-on-2d-images/7682/2 "2025-12-17T17:53:00Z")

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This question has been also properly [posed on the VTK forum](https://discourse.vtk.org/t/qvtknativewidget-jagged-edges-on-2d-images/16188). The discussion should continue there.