unix_surrealism

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"The Everything Manual" page 256 (infosec.pub)

submitted 2 days ago by NoFood4u@sopuli.xyz to c/unix_surrealism@lemmy.sdf.org

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[–] lime@feddit.nu 14 points 1 day ago (1 children)

is that a bumpmap or cosmic background?

[–] NoFood4u@sopuli.xyz 10 points 1 day ago

The background is made from a plain purple color with added HSV noise. Then an effect is added on top of everything by copying the entire image into a new layer and applying a convolution with a kernel like this:

-1  0  0  0  0
 0 -1  0  0  0
 0  0  1  0  0
 0  0  0  1  0
 0  0  0  0  1

In GIMP those are under "filters > noise > HSV noise" and "filters > generic > convolution"