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I have this image text which I was able to obtain from a low resolution jpg and then cleaned it out to this point, but now as can be seen in the pic it does not look smooth. I can't find the words I should use to google this and find out how to make the writing look more smoother. Whenever I search for smoothen, Google only shows me blurring options but blurring did not help.

enter image description here

The lines look so irregular. Is there a tool that can easily smoothen this out in GIMP? For example the "G" curve I want it to smoothen to average to a nice curve as in the process of Curve Fitting.

enter image description here

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    I think it would be better if you moved to inkscape? But realistically ist not worth the hastle just draw the curves again.
    – joojaa
    Nov 9, 2022 at 14:45
  • alright! thank you. i guess that would be the only way then xd
    – Harry McKenzie
    Nov 9, 2022 at 15:34
  • You could downsample the image and then do a Trace Bitmap in Inkscape. Might have to fix some wonky paths manually though see example
    – Billy Kerr
    Nov 9, 2022 at 22:01
  • thank you! i had a python script in blender python that would convert the image to a mesh and then i was able to smooth it out in blender xd
    – Harry McKenzie
    Nov 10, 2022 at 13:49

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Short of actually redrawing the curves using a vector image editor, it's possible to get a decent enough result using Inkscape's trace bitmap function. The same would be possible in Adobe Illustrator using its trace function (but Illustrator isn't free).

Here's how I would do it.

  1. In GIMP, rescale the image to make it much smaller - using Image > Scale Image. Scale it to about 800px wide, interpolation Linear. That will kind of even out all the hard anti-aliased pixels.

Something like this

enter image description here

  1. Import this into Inkscape, Select it, and do Path > Trace Bitmap - use the settings shown below

enter image description here

  1. The result is pretty smooth. You might want to tweak some of the curves, handles and nodes manually if you think something isn't quite right.

enter image description here

  1. Finally recolour the traced vector by sampling from the original using the eyedropper.

enter image description here

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  • wow! fantastic! thank you so much!
    – Harry McKenzie
    Nov 11, 2022 at 15:40

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