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List:       kde-bugs-dist
Subject:    [Bug 148540] Plugin for adding noise to images
From:       Dik Takken <d.h.j.takken () phys ! uu ! nl>
Date:       2007-08-14 20:06:01
Message-ID: 20070814200601.21464.qmail () ktown ! kde ! org
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http://bugs.kde.org/show_bug.cgi?id=148540         




------- Additional Comments From d.h.j.takken phys uu nl  2007-08-14 22:05 -------
I tried that, but the film grain plugin does something completely different than the \
HSV scatter tool found in GIMP. The HSV scatter tool does something like this, for \
every pixel:

Pixel.Lightness += LightnessAmplitude * Rand()
Pixel.Hue += HueAmplitude * Rand()
Pixel.Saturation += SaturationAmplitude * Rand()

And this is exactly what I need. I tried adding pseudo detail using the film grain \
tool, but I bumped into two problems:

* The 'grains' are too large. As a result, the image looks 'dirty' rather than \
                detailed.
* It does not only add texture, but it also changes brightness/contrast.


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