Remove lines (from a wireframe-rendered object) but keep image smooth

I have the following image that I rendered using Blender:


What I want is to remove those black lines (wireframe) but keep the image as smooth as possible. I tried removing them using the Color to Alpha removing the black color and then use a gray layer behind it but that didn’t work.

Is there a way to remove those lines in Gimp?


Hard to do given the grainy surface:

A first shot is to use a heavy Gaussian (with alpha-lock):

enter image description here

And maybe restore the grainy surface by multiplying with a noise-filled layer:

enter image description here

To be a bit more technical, take the blurred image, set it in Difference mode over the initial image, Layer>New from visible and threshold to get the lines:

enter image description here

You can then use this as a selection (possibly after a Select>Grow), and if you have the Resynthesizer plugin, use Filters>Enhance>Heal Selection:

enter image description here

Source : Link , Question Author : ibrahim mahrir , Answer Author : xenoid

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