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How do I achieve cloud effect?

Apr 18, 2014, 03:52 (This post was last modified: Apr 18, 2014 03:57 by redbrick.)
Post: #1
How do I achieve cloud effect?
Hello,
Beginner Gimp user here, I hope this is the right place to post.
I've been trying to figure out how to achieve a certain cloud/nebula effect in Gimp but I seem to not have any luck so I'm hoping to get some help.

This is the effect I'm trying to achieve:
   

And this is what I've been able to get so far by using the Cloud-Solid Noise filter and Displace Filter (not quite as 'wispy' and doesn't have those detail lines which make it look like brushwork in the image above).
   
   

I don't know what else to do to get the swirly-ness and especially the contour/detail lines. I would really appreciate any input and help on this matter as trying to figure it out by myself is getting to be very frustrating.

Thank you in advance.
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Apr 18, 2014, 08:53
Post: #2
RE: How do I achieve cloud effect?
Maybe differnce clouds with small x / y values and a bit of tweaking.

http://i.imgur.com/yaENOu9.jpg

But for wispiness have a look at the flame plugin. The Gimp flame is ok but the interface is a bit clunky.
Do a search for the stand alone Apophysis, the preview is much faster. Then finish off in Gimp.

Not exactly what you want, but great fun experimenting.

http://i.imgur.com/s3AmPlq.jpg

** https://www.gimp-forum.net/ now answering questions**
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Apr 18, 2014, 09:57 (This post was last modified: Apr 18, 2014 09:59 by iForStyle007.)
Post: #3
RE: How do I achieve cloud effect?
@redbrick:

You were very much close to the same effect of the wispy clouds.

To get it to look closer, I took your image & added more contrast.

Colors > Brightness-Contrast...

Then I added a new transparent layer & drew a radial gradient. (blend tool)
- Choose the "Purples" gradient.
Last, I Gaussian blurred the gradient to smooth it out more
and I changed the layer mode to "COLOR"
The below is a cropped version of your second picture.

(click to enlarge)
   

"In order to succeed, your desire for success should be greater than fear of failure." BC
[Image: 29uocaf.png]
iFS007 tut vids on YT ~ auto color B&W landscape tut
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Apr 19, 2014, 16:37
Post: #4
RE: How do I achieve cloud effect?
Those are excellent suggestions. However, I'm trying to figure out how to get the detailed/contour type lines you see in the first image.

The method I used for my trial image was render > clouds > solid noise (detail at 15) and then create two more solid noise layers to use as x and y displacement map layers. Then I went ahead and applied map > displace (x and y values set between 20 and 40) and selected the two cloud displacement map layers I created before. As you can see, this comes close to the original image but still doesn't give me the fine lines seen in the first image. If you have any suggestions on that, I'd very much appreciate the input.

Maybe sharpening or the ripple filter might help but I haven't tried those yet?
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Apr 20, 2014, 20:47 (This post was last modified: Apr 20, 2014 21:15 by iForStyle007.)
Post: #5
RE: How do I achieve cloud effect?
(Apr 19, 2014 16:37)redbrick Wrote:  Those are excellent suggestions. However, I'm trying to figure out how to get the detailed/contour type lines you see in the first image.

The method I used for my trial image was render > clouds > solid noise (detail at 15) and then create two more solid noise layers to use as x and y displacement map layers. Then I went ahead and applied map > displace (x and y values set between 20 and 40) and selected the two cloud displacement map layers I created before. As you can see, this comes close to the original image but still doesn't give me the fine lines seen in the first image. If you have any suggestions on that, I'd very much appreciate the input.

Maybe sharpening or the ripple filter might help but I haven't tried those yet?

Ok, Interestingly enough, it looks like if you combine all those filters (sharpen, & ripple plus turbulent) you will achieve a closer effect. (how is that going by the way? ^_^ )

Here's an updated(my last) try. I'll attach the xcf below so you can see all the layers.
(drag the layers window wider if you can't read all the captions)

1. Do the same cloud method, except also check on the "[]Turbulent" option
2. For "X" cloud, on the render > cloud options, click "new seed" with turbulent on, click ok.
3. Same for "Y" layer (turbulent...)
4. Apply the "Filters > Distort > Ripple" using the settings in the below image, to both layers "x" & "y"
   
5 Repeat the sharpen filter for both X & Y at around 72 (my setting)
6. Apply the displacement filter x "20" y "40"
7. Then lower or raise the contrast some to give it that "floaty" effect
The rest is all colors

*Note: layer "x" is what x & y looked like before the displacement (except different seeds)

EDIT:
   
(click to enlarge)
And...after I added a multiple point color radial blend(gradient) layer.
Graidient type is "rad grad" shape: radial
Gradient blend offset 30.6
Layer mode: color. I added a motion blur:zoom to the gradient after.
Then I adjusted the contrast & brightness on the cloud layer to enhance the depth more while still keeping the fine line/details. Full detail is in the .xcf in original color.


Attached File(s)
.xcf  (clouds)displacement.xcf (Size: 605.79 KB / Downloads: 25)
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May 13, 2014, 23:49
Post: #6
RE: How do I achieve cloud effect?
It seems that I've hit another newbie obstacle. How do I get a cloud render like this?

[Image: 1QYk1hC.jpg]
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May 19, 2014, 14:25
Post: #7
RE: How do I achieve cloud effect?
The final effects are really good, but not really simple to reproduce.
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May 21, 2014, 03:45
Post: #8
RE: How do I achieve cloud effect?
(May 19, 2014 14:25)fanina Wrote:  The final effects are really good, but not really simple to reproduce.

Practice makes perfect, Rome wasn't built in a day, etc. Just stick with it, take your time, it probably won't be perfect the first time you produce it. Dust your self off and try again.

The cloud effect in this thread is made up of many elements, so start with the first element, when you're comfortable with that task (Filters > Render > Clouds...) move on to the next one.
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