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Tunnel effect

Feb 4, 2012, 18:10
Post: #1
Tunnel effect
How to make tunnel effect like on this picture background?
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Feb 4, 2012, 19:52
Post: #2
RE: Tunnel effect
I tried that, it's not what I need Sad I want to keep the center portion, circle shaped, unchanged and from the edge of that circle I want to "radiate" lines (from center outside) so that lines basicaly keep the color of the pixel on edge of circle from which they originate. I dont want to blur pixels outside the circle, I want to replace them with those radiating lines. I hope I managed to explain clearly, english is not my native language.
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Feb 4, 2012, 22:21
Post: #3
RE: Tunnel effect
That's not it either. Or I cant find the right combination. I dont need to add new lines, just use what's already on the picture.
[Image: 2uhpmgw.jpg] This is what I'm trying to achieve. On my phone I have app that transform image in a second, but it can work only on small files. I want to transform larger pictures.
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Feb 5, 2012, 12:25 (This post was last modified: Feb 5, 2012 14:06 by Gorstak.)
Post: #4
RE: Tunnel effect
Sorry if I mislead you with the first picture. It was the closest thing I found on internet when i wrote the post. This is exactly what I need. Thank you Big Grin
Can you give me litle more details? How many pixels did you use for border selection? I did copy/paste/make new layer, is that the right way to duplicate into new layer? How to make layer fully opaque outside the circle, after motion blur the selection is so transparent it's virtually invisible?
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Feb 5, 2012, 14:22
Post: #5
RE: Tunnel effect
Now I'm a bit confused. When do I do restoring opacity? It's probably simple, but I'm not that experienced with gimp Smile
I opened the image, made circle shaped selection and made border selection with 20-30 pixels (it's easy so far). Then, do I copy/paste/make new layer so that only selection is on new layer, or do I duplicate the whole background layer? And then what exacly? Sorry for bothering, but I see you managed to do exactly what I need, and I dont understand how Sad
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Feb 5, 2012, 19:05 (This post was last modified: Feb 5, 2012 19:15 by Gorstak.)
Post: #6
RE: Tunnel effect
I understand now the layer masks and adjusting the layer transparency. But I don't know how to use it in this effect :/ Since the layer with the ring is on top of others, it is fully visible and I can use mask only to make it more transparent and I dont see how that would help. Also, when I do zoom blur, it applies only on selected ring and not outside of it. It doesn't look like the result you got. Sad I didn't know how to do
Quote:- restore the initial selection (just before you made it a border)
- invert selection (everything selected except central circle)
- bucket-fill selection with white (layer becomes opaque outside of central circle)
- apply layer mask
so I used large brush to erase transparency outside the ring but it clears only some square around tre ring, nothing I could do to make visible the rest of the area
outside that square. And even that square with zoom blur doesn't look like your result.
I'm sure you have more important things to do, but I would appreciate if you could explain it to me more like a step by step tutorial. For two days I'm banging my head over this and I'm no closer to solution. I only know, thanks to you, that it is easy doable.
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Feb 5, 2012, 21:11 (This post was last modified: Feb 5, 2012 21:12 by Gorstak.)
Post: #7
RE: Tunnel effect
What do you mean "remove the selection"? After duplicating the selection on new layer, I have two layers, background with whole picture and the transparent one with the selected ring. There is no selection on either of them. Where the zoom should be applied?
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Feb 7, 2012, 15:37
Post: #8
RE: Tunnel effect
Hmm thanks for sharing this wonderful post, I really like to your thread.It is quite helpful discussion according to me, thank you so much for the impressive post......
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