GIMP Plugin Registry

Automaticly copies the image and insert this. The script creates a Layer-Mask and makes a part of the insert layer invisible.
It's great to have a part of the original image on the top, because than you have a very well comparision.

If you have any suggestions for improvement contact me.

I hope this example conform your requests:

This extension allows you to add dominants to your black and white (or colour) photos.
In the "Layer mask" mode the dominant is balanced with a mask, such that your whites remains whites.
The homepage is in Italian but you can see some screenshots and examples there. Please note also that the plugin is in English.

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After

I just notice that MathMap one of the better Gimp Plugin is not listed here.
To present it i just quote its developer Mark Probst
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MathMap is an image processing application that works on several levels:

* Without any prerequisite knowledge about image processing, one can use any of the more than one hundred filters that come bundled with MathMap.  read more »

The script makes a pencil drawing from a photo. It's very easy to handle.
The original tutorial can be found here: http://www.gimpusers.com/tutorials/making-a-pencil-drawing-from-a-photo....
Here you can see a little example:

SpliX - is a powerful script for tone image's areas (light/dark) into two different colors (split).
Features:

• Spliting edge control (offset and sharpness)
• Tone opacity control
• Source image preserve
• Merge output into one layer (by default)
• Affect on contrast (optional)
• Work with visible support
• Source mask defining
• Sublayer desaturation

SpliX v3.0r2 released! (13 March 2010)  read more »

This is a Python plug-in, written initially in Spanish by Mr Javier Pacheco, which from an image creates a standard complete month calendar. It has been translated in English and modified by me to try for more flexibility in the design of a standard calendar.  read more »

This script takes a picture, create a white background, and off-center the foreground on it. Then it add a dropped shadow.

Example:

Original picture:

Result picture:

Windows binary for this new plugin by Arel Welgan.

Source has been fixed for Windows compilation by Samj. Plugin no longer crashes under Windows.

Please note that all comments below, prior to Nov 28 2009 are related to another build not to this
that seems working well with RGB and RGBA images

Extract colour-match.exe from the ZIP archive and copy it to your c:\Documents and Settings\[user name]\.gimp-2.6\plug-ins\

(As Windows compilation by Samj was perfect, I kept it in the archive. Mine was several bytes larger...)

Easily map colours from a source colour to a target colour. Very effective for matching skin tones across images or between people.

Relatively quick (but not earth shattering). It doesn't work with grayscale or indexed images. Has preview, works with selections and layers, etc. Very, easy to use, and quite useful for portraits or recolouring graphics.

A demonstration: Lenna's face is mapped to the colour of the feather on her hat. This was done by selecting a colour from her face, then selecting a colour from the feather.  read more »

RSS Lightsaber (or LSE) is a simple script for creating lightsaber effect in picture. The script base on my own algorithm.
Features:

• Fast script's execution.
• Independent setting for blur size of the lightsaber's core and glow around saber.
• Some features to provide correct effects on extra large photos (above 20 Mp).

The basic documentation is inside archive. Enjoy!  read more »