A repository of extensions for GIMP, the FREE and Open Source image manipulation program.

draw-polygon.scm

To draw all the regular polygons in parametric modality

Script Tutorial: http://xoomer.alice.it/lwcon/gimp/script-fu/draw-polygon.htm

Silicosaur PhotoFX

Silicosaur PhotoFX is a collection of script-fu macros for GIMP (GNU Image Manipulation Program) to easily simulate development methods and film types used by photographers of pre-digital age.

By using Silicosaur PhotoFX you can simulate Portra, Provia, an Velvia film characteristics and Cross Processing (aka. X-PRO) effects.

Download

Lomo

It tries to replicate lomography effect. It also tries C41 color curves. If someone has better color curve for this. Do tell

Tone mapping

It reduces global contrast in images while increasing local contrast and shadow/highlight detail. Use this to make your images "pop."

"Google Logo" Script

This script creates shiny-looking 3D logos, similar to that of a well-known search engine.

The original script lives under Filters → Alpha to Logo → Google Effect. It creates a 3D logo from an existing image. For example, this:
Martin Ultima
Turns into this:
Martin Ultima

Translucent border

Creates an outer border of the image with reduced brightness and 2 inner colours.

Split tone

Uses one colour for the highlights and another for the shadows. The following photo was created using the default colours:

Before:
Split tone - before

After:
Split tone - after

draw-line-trat.scm

Script to Draw dashed lines with GIMP in parametric modality.

Script Tutorial: http://xoomer.alice.it/lwcon/gimp/script-fu/draw-line-trat.htm

Wavelet denoise

The wavelet denoise plugin is a tool to reduce noise in each channel of an image separately. The default colour space to do denoising is YCbCr which has the advantage that chroma noise can be reduced without affecting image details. Denoising in CIELAB (L*a*b*) or RGB is available as an option. The user interface allows colour mode and preview channel selection. The denoising threshold can be set for each colour channel independently.

Shadows&Highlight

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.

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