Re: [Gimp-developer] Gimp from git Gegl Gaussian Blur and Unsharp Mask useability issues

[Elle Stone <ellestone ninedegreesbelow com>]

On 12/04/2013 05:27 PM, Joao S. O. Bueno wrote:
> On 4 December 2013 19:50, Teo Mazars <mazarst ensimag grenoble-inp fr> wrote:
> > > This Gaussian blur slider range doesn't really allow slider selection
> > > of
> > > small, precise values less than 1, so typing in values is still
> > > necessary. A logarithm-type scale might be better than a linear scale
> > > as
> > > the useful range for blur necessarily is large, and the larger the
> > > image, the larger the useful range.
> >
> > [...]
> >
> > > The other gegl_chant_double_ui values are pretty obvious. What does
> > > the
> > > value "1.5" do?
> >
> > The "1.5" is the UI exponent you were asking for in Gaussian Blur, 1.0 is linear. If 1.5 is not enough, you 
> > may try 2.0 or larger. For the slider step problem, I don't know much about that sorry... I think the new UI values you 
> > suggest are good. So please, try some more by tweaking the exponent and you can commit directly to GEGL master those 
> > changes, if you want.

OK, that would explain why lowering that value to below 1 made the 
slider act strangely. I'll do some more experimenting and submit a 
patch. In the meantime, anyone have an idea of the largest GB and USM 
values they actually have used for image editing?