Re: [Gimp-user] liquid rescale to fill transparent areas

[Pat David <patdavid gmail com>]

This an be tricky depending on the extent of the area that needs to be
filled.

I've often found other problems - particularly if there's a large gradient
of varying brightness across a sky (this is exacerbated when the images are
shot late in the evening or early in the day - but can be just as
troublesome on a clear day as well).

In the past I've had luck with cloning large sections of the sky or just
copy/pasting a big region to where I need it and blending it by hand if
necessary.  I'm not at a GIMP machine at the moment to demonstrate, but if
you post an example image over on the pixls.us forums I'd be happy to maybe
record a quick video of attempting a repair.

Resynthesizer and G'MIC inpainting often work best when there's texture
that needs to be synthesized to match it's surroundings, but might not do
as good a job if it's a big area of gradient sky.


On Fri, Sep 20, 2019 at 9:31 AM Gary Aitken <gimp dreamchaser org> wrote:

> > > Can someone tell me how to get the liquid rescale plugin to expand
> > > into transparent areas?  I have a panorama with stepped
> > > transparent areas of sky in one part of the image.  I would like to
> > > expand the sky into the transparent areas, but I can't get it to
> > > work.  The image as a whole does not need to be resized.
> > >
> > > I started by painting a preserve mask over everything but sky, but
> > > the result looks like nothing was done. I then tried using a
> > > rigidity mask and no preserve mask, with the same result.
> > >
> > > Is it even possible to use LqR to do this?  Is there a better way?
>
> > from what I understand from your description about the transparent
> > areas , hope I'm correct with this - trying to visualize hmm what you
> > are doing  , I know this will work there's a plugin Gimp
> > Resynthesizer and it works by healing the transparent areas or
> > selection areas and it's easy to work this plugin , someone who gives
> > a good help page is https://patdavid.net/ look on his site many
> > useful articles might be one for LqR never know if you don't go
> > look.
>
> Thanks for the reply.
> I've tried resynthesizer and the results are not very good with sky.
> I've tried both resynthesizing transparent areas and resynthesizing
> between a pasted section at the top and the existing sky at the
> bottom.
>
> Sky seems to be particularly difficult to resynthesize in a manner
> which complements the existing sky in the image.
>
> None of the articles I have found on LqR show its use for filling
> transparent areas without resizing.
>
> Gary
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