Photoshop jiggle alternative

[waldronate]

If you look at the Jiggle and Ocean Ripple effects they are both just displacement effects. Jiggle has lots of octaves of noise, while ocean ripple looks to have just one or three to give it that hummocky look.

The images below are much closer to the effect of the jiggle filter. It's about using a smaller image map with greater dynamic range, I think. The swirly bits are an artifact of the difference clouds effect; using a more raw fBm as might come from Wilbur will most likely get harsher lines.

The tiliing may be a distraction. The middle row was a 200x200 displacement map. It looks like the important part may be getting the noise at a high enough frequency and dynamic range (get the bumps smaller and with greater blacks and whites).

[RobA]

If you look at the Jiggle and Ocean Ripple effects they are both just displacement effects. Jiggle has lots of octaves of noise, while ocean ripple looks to have just one or three to give it that hummocky look.

The images below are much closer to the effect of the jiggle filter. It's about using a smaller image map with greater dynamic range, I think. The swirly bits are an artifact of the difference clouds effect; using a more raw fBm as might come from Wilbur will most likely get harsher lines.

The tiliing may be a distraction. The middle row was a 200x200 displacement map. It looks like the important part may be getting the noise at a high enough frequency and dynamic range (get the bumps smaller and with greater blacks and whites).

Good idea - Rather than scaling down noise I figured I try it by enlarging correlate RGB pixel noise:


Looking quite close to ocean ripple

-Rob A>

[jfrazierjr]

Good idea - Rather than scaling down noise I figured I try it by enlarging correlate RGB pixel noise:


Looking quite close to ocean ripple

-Rob A>

Just saw this... is there an existing plug-in that does this, and if not, could you throw one together when you get some time.... this is quite interesting.

[RobA]

Just saw this... is there an existing plug-in that does this, and if not, could you throw one together when you get some time.... this is quite interesting.

Sorry yeah- http://registry.gimp.org/node/24597

-Rob A>

[Natai]

Thanks, great suggestions.
waldronate, that's starting to look a little closer to Jiggle.
It occurs to me I should explain what I'm hoping to use it for. I'm not worried about coastlines, though all of these techniques would work well for them. I'm thinking more along the lines of breaking up forest or other regional textures so they blend together better. I'm angling for a map style somewhere between a "typical" map-like representation and something closer to aerial imagery. So clean or simply faded/blurred edges don't really work.
One of the tutorials I read made use of this technique quite effectively. Though, of course I can't remember which one at the moment.
I've used difference clouds in some cases, as well as ocean ripple, sometimes even working it by hand (especially with forests). For the most part it has worked out okay, but some situations I just really wish I had a 64-bit Jiggle.