Image Forensics‎ > ‎

HSV Analysis

NEW: GIMP plugin added. Compile and install with:
$ CFLAGS=-O3 gimptool-2.0 --install elsamuko-hsv-analysis.c
You will find the plugin then under Colors->HSV Analysis.


Original Image:

HSV Histogram:

Modified Image (yellow filter + high saturation):

HSV Histogram:

Result: The colors are not spreaded anymore. Also the regular pattern hints at color manipulations.

More information:
http://www.hackerfactor.com/blog/index.php?/archives/389-Out-of-the-Blue.html
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elsamuko-hsv-analysis.c
(9k)
El Samuko,
Dec 5, 2010, 10:56 AM
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El Samuko,
Sep 30, 2012, 4:23 AM
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