SharkD schrieb:
> There are unfortunately some weird striations in the resulting image:> > http://i421.photobucket.com/albums/pp292/SharkD2161/Support/hf_striations.png
The factor to multiply the sqrt() term with is obviously too high,
leading to the banded pattern.
In addition, it appears to me that your input file is suffering from
JPEG artifacts, causing those regular-spaced vertical stripes.
