[Digikam-devel] [Bug 127374] unsharp mask: max. radius way too small!

[Matthias Wieser]

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http://bugs.kde.org/show_bug.cgi?id=127374         




------- Additional Comments From mwieser gmx de  2006-05-15 23:14 -------
Hi,

> ------- Additional Comments From caulier.gilles free fr
> All old settings limits have been restored from 0.8.x serie.


Thanks for the quick response!

> Note 
> : this plugin use a new algorithm based on ImageMagick implementation to
> support 16 bits image, not gimp algorithm !


What does this mean?
It seems to be impossible now to use a radius below 1 pixel.



Btw.: Is it intentional that most plugin dialogs do not state which units 
are used?

Sharpness: 0 - 100: Percent? Some other unit?
Gaussian blur: 0 - 100: Radius in Pixel?
Noise reduction: ?? (How do I reduce the strength of the default noise 
reduction to e.g. 50%? No idea, maybe I should look into the handbook...)

Unsharp mask:
Radius: 0 - 100: Pixel?
Amount: 0 - 1: Strength normalized to 1?
Threshold: 0 - 1: Pixel color normalized to 1? But the histogram shows pixel 
colors in the range from 0 - 255 (for 8 bit images). Should be the same, 
should'nt it?

Anti-Vignetting:
Density: 1 - 20: Percent? Not really, seems to be something other

Distortion effect:
Iteration: 0 - 100: ?? Seems to have no effect... (Bug?)
[...]

Regards,
  Matthias