I have already given this idea some though... my approch was a bit
darktable-ish in its philosophy.
Add an iop that replace all pixel from the image with the pixel from
another image from the library
Use blendif/mask on that iop to only apply it to the areas of the image
you only want replaced
This approch has the advantage of using the existing the existing DT
mechanisms, provide the power of blendif/masks almost for free and having
maximum image quality since we get the pixels of the replacing image
directly from the DT pixelpipe.
The drawback is that it introduces dependency between images (but
multi-image blending always will) and that it makes computation very long
(you need to process both images to produce one)
The idea of blending multiple images was received more coldly than I
expected by the other cold devs, but I still think that if something like
that was to be done, the iop approch would be the best one.
If you intend to work on something like that, please do a separate branch
that we could look at...
On Fri, Jun 13, 2014 at 3:33 PM, YAFU <[email protected]> wrote:
> Hello.
> Is it possible to save a mask as transparency (alpha channel) with some
> file format in Darktable?
>
> Actually my intention is to compose two photos directly in darktable. For
> example mask an object in a photo and use it directly over another photo
> used as background. It would be great to do that directly in Darktable, but
> I'd settle for just being able to save/export the mask as transparency, and
> then to compose the image in GIMP.
> Thanks.
>
>
> ------------------------------------------------------------------------------
> HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions
> Find What Matters Most in Your Big Data with HPCC Systems
> Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.
> Leverages Graph Analysis for Fast Processing & Easy Data Exploration
> http://p.sf.net/sfu/hpccsystems
> _______________________________________________
> Darktable-users mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/darktable-users
>
>
------------------------------------------------------------------------------
HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions
Find What Matters Most in Your Big Data with HPCC Systems
Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.
Leverages Graph Analysis for Fast Processing & Easy Data Exploration
http://p.sf.net/sfu/hpccsystems
_______________________________________________
Darktable-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/darktable-users
