overlay

Exact Aligner

vtries — Fri, 02 Oct 2009 08:06:05 +0200

This script brings 2 pictures to an exact overlap.
The pictures must be in 2 different layers of the same image.
Get the layer 2 with 50% transparency. This makes both pictures visible in one projection.
You have to tell the script, which 2 points have to overlap. Therefore you stroke a path with a path tool in the image including 4 points. Point 1 will be aligned with point 3 and point 2 will be aligned with point 4.
The points build one path. So you can just click the 4 points consecutively.
More description is in the file.

Thanx
Volker Tries
(c) 2009

National Geographic Script

elsamuko — Mon, 22 Sep 2008 23:27:57 +0200

This script simulates a high quality (portrait) photo like these from the National Geographic.
Copy it into the scripts folder from GIMP, you will find it then under Filters -> Generic -> National Geographic.
Thanks to Martin Egger for the shadow revovery and the sharpen script, which I included in the script.
Examples here and here:

Update1: Added local contrast option.
Update2: Optional inverted layer mask for brighter skin types.
Update3: Added a batch version of this script, run it with
gimp -i -b '(elsamuko-national-geographic-batch "picture.jpg" 60 1 60 25 0.4 1)' -b '(gimp-quit 0)'
or for more than one picture
gimp -i -b '(elsamuko-national-geographic-batch "*.jpg" 60 1 60 25 0.4 1)' -b '(gimp-quit 0)'
Be careful, the batch script overwrites the original image. More info here.
Update4: Fix for the batch script, it merges now all layers before saving.

Shadows&Highlight

steelneck — Sun, 27 Apr 2008 23:24:20 +0200

This Shadow&Highlight script does a decent job of lightening shadows and/or darken highlights in photographs. The UI gives you five control sliders. Two for control of the Shadow and Highlight amount (opacity), two for the tonal width of each contrast mask layer (using gamma), and one for the blur radius of the masks. Plus the option to flatten visible layers when done.

A note on the tonal width sliders, the Shadow Tonal width works as expected giving a wider/heavier tonal range using higher value. But the Highlight Tonal width behaves opposite, affecting a smaller tonal range using higher values.

Layer Effects

JonStipe — Thu, 24 Jan 2008 22:43:37 +0100

This is a series of scripts that implement various layer effects:

Drop Shadow
Inner Shadow
Outer Glow
Inner Glow
Bevel and Emboss
Satin
Color Overlay
Gradient Overlay
Pattern Overlay
Stroke

Some effects can have contours (a.k.a. curves) and noise added to them. Effects can either be applied on a separate layer, or be merged into the active layer (which in some cases gives better results).

Tested with GIMP 2.4.2.

Updated 6/9/2009:

Stroke now supports gradients and patterns! (Python version only)
Better undo handling in the Python version.
Various bugfixes.

Updated 11/15/2008:

The Python version now has live previewing! With the "Preview" checkbox active, the preview now updates automatically every time you change a setting!
New "Reapply Effects" function: Reapplies all effects that have been applied to the current layer. If you change anything on the layer, use this to update all the effects in one go! (Mind you, this only works for effects that were not applied using the "Merge with layer" option.)
Various bugfixes.

Updated 09/02/2008:

Bugfix in Script-Fu version.

Updated 07/19/2008:

You can now scale patterns in pattern overlays. (Python version only.)

Updated 07/08/2008:
This script has now been rewritten as a Python plugin! This adds several new features that weren't possible in Script-Fu!

You can now preview effects! Click the "Preview" button to see what it will look like with the currently selected settings.
The plugin now records the settings used to make an effect, so now you can reapply it! Run the same effect plugin on the same layer again, and it recovers the previous settings for that layer and shows them in the dialog box. You can then change the settings and apply the effect again, and it will replace the original effect layer! (Note: This will only work if you don't select "Merge with layer". Once an effect has been merged into the layer, it can't be removed or changed.)

Updated 04/21/2008:

Bugfix

Updated 03/02/2008:

Added grayscale support
Bugfixes

How to install (Script-Fu version):

Right-click on the link below that says "layerfx.scm". A pop-up menu should appear. Click "Save Target As..." or "Save Link As..." or whatever the equivalent option in your browser is.
Save the file "layerfx.scm" in your scripts folder. If you're not sure where your scripts folder is, you can check by opening GIMP and going to <Toolbox>/File/Preferences -> Folders -> Scripts. If more than one folder is shown, then any one of them will work.
Once you have saved the file in your scripts folder, if you are already running GIMP, either click <Toolbox>/Xtns/Script-Fu/Refresh Scripts, or just close and reopen GIMP.
If you have done this correctly, the scripts will appear in the menu under <Image>/Script-Fu/Layer Effects. If this menu is not there, try clicking <Toolbox>/Xtns/Script-Fu/Refresh Scripts. If it's still not there, make sure the file is in your scripts folder and that the filename ends with ".scm", not ".txt" or ".scm.txt" or something.

How to install (Python version):

Right-click on the link below that says "layerfx.py". A pop-up menu should appear. Click "Save Target As..." or "Save Link As..." or whatever the equivalent option in your browser is.
Save the file "layerfx.py" in your plug-ins folder. If you're not sure where your plug-ins folder is, you can check by opening GIMP and going to <Toolbox>/File/Preferences -> Folders -> Plug-Ins. If more than one folder is shown, then any one of them will work.
If you're on a UNIX system, make sure layerfx.py is executable by typing this in the shell:
chmod +x layerfx.py
On other operating systems, you might have to do something else to make it executable.
Once you have saved the file in your plug-ins folder, if you are already running GIMP, close and reopen it.
If you have done this correctly, the scripts will appear in the menu under <Image>/Layer/Layer Effects, and <Layers>/Layer Effects. If these menus are not there, close and reopen GIMP. If they're still not there, make sure the file is in your plug-ins folder, that it is executable, that you have Python support installed, and that the filename ends with ".py", not ".txt" or ".py.txt" or something.