On Mon, 2009-06-01 at 19:25 +0200, Sven Neumann wrote:
> Hi,
> 
> On Sun, 2009-05-31 at 08:12 -0500, Leonard Evens wrote:
>  
> > > Copy your selection, paste it to a new layer and blur that layer. Does
> > > that give the desired result?
> > 
> > I don't believe so.   I tried it.   It still used pixels outside the
> > selection in computing the new pixel values in the desired region.  In
> > this case, those values were zero, so that lightened the region at the
> > edges.
> 
> Zeros would not lighten the edges, but darken them. What Blur did you
> use at all?

Of course you are right.  My problem was that I copied the selection
into a new layer with transparency as the fill type.   I don't really
understand what happened, but it appears the transparency was being
averaged, so after the gaussian blur, the selection in the new layer
appeared to fade out at the edges, thus looking "lighter".  I don't use
transparency controls much, so I will have to reeducate myself in the
subject to understand what happened.   

I've tried it again, using white as the fill type.  This time the
selection got whiter near the edges.  That is not what I want.

Maybe there is some way to do this to get it right, but as of yet I
don't know what  it might be.
> 
> 
> Sven
> 
-- 
Leonard Evens <l...@math.northwestern.edu>
Mathematics Department, Northwestern University

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