Gimp-Forum.net

Hello,

Just started using GIMP and am trying to get to grips with creating space images. To get my star field I am using the Noise filter but for some unfathomable reason, the 'stars' keep coming out red instead of white. I've tried every reset but nothing helps. I don't know why or how this happened. Can anyone help? I saw somebody with the same issue posted to the old forum in 2010 and a reply suggested using saturation = 0. This has not helped me.

Thanking you in advance.

1) which noise filter?
2) can yo post the settings used (or a screenshot of the dialog)?
3) can you attach the output image (see here for instructions)?

You do need to describe the method you are using. Might help others with the same problem.

Depending on noise filter, you get multi-coloured pixels, and if transparency is introduced often looks like they are still there. I think, depending on image size and parameters there are usually too many stars. Other than desaturate, there is Colors -> Threshold which reduces to black & white.

---------
I might do this: Use Hurl noise with minimum values https://i.imgur.com/5cS3r02.jpg

Apply Colors -> Threshold with the left slider almost maxed out (value here 252) That reduces the number of stars. https://i.imgur.com/mOrvENq.jpg

Again, depending on size of image, make the noise (stars) larger, Filters -> Generic -> Dilate. https://i.imgur.com/zwYrAqX.jpg

On the other hand, there is a script to produce starry-skys https://gimpscripts.com/2014/09/starry-sky

looks like: https://i.imgur.com/cXNrnQs.jpg

Many thanks for your replies.
This is a little embarrassing but it has miraculously fixed itself today without any intervention on my part . . . for now at least. I didn't even reboot.
If it happens again I will try your suggestions.
For the record, it was HSV Noise.