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saturation

Follow path updated

New options for the Follow path plugin, more control on the scale, rotation, hue, lightnes and saturation on the path. More info and download from here

Calculate Saturation

This plugin calculates the saturation from a picture with four different saturation algorithms:
1. (max-min)
2. (max-min) / sum
3. like HSV: (max-min) / max
4. like HSL: (max-min) / (max+min)

Build and install it with:
$ gimptool-2.0 --install elsamuko-saturation.c

You'll find it then under Colors->Components->Calc Saturation.

Example:
Saturation

Adaptive saturation curve for LabCurves

Hi folks,

there is an update for LabCurves to have a curve for adaptive (or absolute) saturation adjustments. It is an external 16 bit program which can be semmlessly used from gimp with a python script.

More information here: http://www.mm-log.com/blog/2010-07-09/adaptive-saturation-curve-labcurves

greets mike

Batch Edit Color Balance, Brightness and Contrast

The script enables you to do two image adjustment operations to all images in a folder:

  1. Individually adjust the color balance in shadows, midtones and highlights
  2. Adjusting the Brightness and Contrast

You choose a folder with a folder browsing widget, you can also specify the file extension of the files you would want to change(useful if you have non supported files in the same folder).

Indexed HSL

This script works just like the HSL adjustment Tool, but on indexed images. (I am using the same calculation Gimp uses.)

While it is relatively simple to convert in indexed image to RGB, use the HSL Tool, then convert back to an indexed image, the drawback is that the image colour index locations aren't preserved, and you need to know how many colours are in the original colormap.

This script provides the same HSL parameters and modifies the individual entries in the colourmap palette without changing the order.

Range Selection Script

The range selection script is a tool for easy and automatic creation of selections and lay­er masks. The selections or masks include all parts of the image that are situated within a defined range of tonal values, colours, saturation or edges. Selections can be based on one of 16 channels. For detailed instructions and several samples have a look at the attached manual.

Lomo-Gimp

Lomo-Gimp tries to give your digital pictures the warmth of those taken by an old rangefinder analog camera. Think of it as a Kodak Instamatic or a Lomo Holga faking effect. It enhances contrast and saturation, and applies a light and a dark overlay, trying to emulate incorrectness in exposition. Please note this does nothing to emulate the chromatic aberration peculiar in pictures taken using a real Lomo.

Get it at Lomo-Gimp.

BW Labs

This is another script for converting a picture to black & white. The decompose plugin must to be available. The way of converting the picture is rather different than what other plugins do. Two different luminance layers are mixed according to a mask made with a saturation layer. Six different combinations are provided. Functions are available under the menu script-fu/Photography/BW Labs.

D-Dayed

D-Dayed is a script for The GIMP
Makes the image like the over saturated grainy war photos as evoked in the cinematography of films like Saving Private Ryan

Automated dodge and burn

This is an automation script to dodge and burn the highlights and shadows.

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