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===Rounding corners===
===Rounding corners===
The [http://docs.gimp.org/en/script-fu-round-corners.html Round Corners filter] can round the corners of rectangular images. Rounding more complicated shapes can be accomplished using [http://www.novell.com/coolsolutions/feature/11583.html shrinks]. It's wise to then feather your selection (right click, Select, Feather) for a softer boundary; note that <tt>script-fu-round-corners</tt> doesn't appear to do this.
The [http://docs.gimp.org/en/script-fu-round-corners.html Round Corners filter] can round the corners of rectangular images. Rounding more complicated shapes can be accomplished using [http://www.novell.com/coolsolutions/feature/11583.html shrinks]. It's wise to then feather your selection (right click, Select, Feather) for a softer boundary; note that <tt>script-fu-round-corners</tt> doesn't appear to do this.
===Filmstrip===
Open multiple images as layers within one image, and apply the Combining->Filmstrip filter.

Revision as of 06:00, 9 February 2012

The GNU Image Manipulation Tool is a free, powerful, bewildering image editing suite. It is in many ways similar to Adobe Photoshop. The GIMP homepage has a great many tutorials.

Batch mode

GIMP can be driven from the command line using the -b (batch mode) option, together with Scheme scripts. The GIMP webpage has a tutorial. The Procedure Browser (Xtns menu in the Toolbox) provides a detailed list of all identifiers. Scripts are loaded from a script directory specified in Edit->Preferences->Folders->Scripts.

Recipes

Rounding corners

The Round Corners filter can round the corners of rectangular images. Rounding more complicated shapes can be accomplished using shrinks. It's wise to then feather your selection (right click, Select, Feather) for a softer boundary; note that script-fu-round-corners doesn't appear to do this.

Filmstrip

Open multiple images as layers within one image, and apply the Combining->Filmstrip filter.