The Image Subtraction plugin compares each pixel of two given images and, if they are equal, put a transparent pixel on the new image. Otherwise, put on the new image the pixel from the primary image. It is useful if you want to isolate objects from two seemed images. The plugin has also a threshold slide bar.
This Gimp plug-in creates a new image/film by periodically extracting layers from another image. It takes one interval (number of sequent layers) every period. The number of periods can be limited.
This Gimp plug-in interlaces/deinterlaces all layers of a film (multilayer image).
interlace: The number of layers is divided by 2 merging two successive layers into even/odd numbered lines of one layer. You can keep the image height by dropping lines or double it and keep all the lines.
deinterlace: Even and odd numbered lines of each layer are stored into two separate layers. Thus the number of layers is doubled. Lines in between are interpolated or skipped (selectable), i.e. the new image has the original height or half of it.
A port of gimp-ace to GIMP 2.2, based on gimp-ace 0.6.3.
Reading from the original description there: The basic "Stretch Contrast" operation takes in the whole image at once, and if there is a white pixel anywhere in the image and a black pixel anywhere in the image, it figures the contrast is already as good as can be. But Adaptive Contrast Enhancement works to increase the contrast locally, and brings out details that most wide-sweeping contrast-enhancements pass over.
Runs also on GIMP 2.4, but the GUI is not 100% adopted.
The registry used to be a custom-developed web application but this has proven to be too maintenance intensive and nothing much happened to the site for several years, as many have noted. Therefore, this new version of the Registry has been created based on the Drupal CMS. Drupal allowed us to provide the complete registry with a minimum of coding effort, through its excellent Content Construction Kit and Views modules. My hope is that it will prove much easier to maintain and also allow others to take a more active role, not just me and authors but also artists and other contributors!