Image Forensics‎ > ‎

LAB Analysis

Compile and install with:
$ CC=g++ CFLAGS=-O3 gimptool-2.0 --install elsamuko-lab-analysis.c
You will find the plugin then under Colors->LAB Analysis.

This plugin uses the CImg library from David Tschumperlé for the RGBtoLab conversion:
http://cimg.sourceforge.net/

As example the famous BP image:
Equipment already in use cleaning the beaches of Orange Beach

LAB analysis:

As you can see, the blue tones hit the borders of the RGB color space, which is a sign for tone stretching.
In comparison the analysis image of the whole RGB color space:


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El Samuko,
Sep 30, 2012, 4:23 AM
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elsamuko-lab-analysis.tar.gz
(280k)
El Samuko,
Dec 26, 2010, 9:21 AM
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