[Digikam-devel] Non-destructive image editing

[Gilles Caulier]

Le 15 juillet 2009 13:44, Jean-Michel Pouré<jm at poure.com> a écrit :
> Dear friends,
>
> At Kdenlive.org, we are still very impressed by showfo quality.

Thanks.

> We would
> like a solution that would allow to use showfo in conjunction with MLT.
>
> We thought of a feature that may interest you:
> non-destructive photo correction
>
> In video, Kdenlive works as such :
> * The source video is left unchanged.
> * During video editing, Kdenlive processes the video using the MLT
> syntax. The film is previewed without modifying the source.
> * Video is exported only during final rendering.
>

This also done like this in digiKam. Image is loaded in memory and
each action on image is stored in queue of ONG files as cache. Until
end, original is not touched, if you overwrite original of course.

But in photo management, this is not non-destructive photo editing exactly...


> One drawback of image manipulation programs like Gimp or Showfoto is
> that they modify the original image.

Until you s
>
> Of course, you can duplicate images but it is a loss of space.
>
> So the idea is to ask MLT to process photos.
>
> The beauty is it would possible, in theory to store MLT processing
> syntax in PNG tags. This would make a completely non-destructive
> solution.
>
> Only when exporting to third-party on-line solutions or DVDs the photos
> would be processed. But the source would remain.
>
> MLT is very reliable and quite easy to implement. You would only need to
> implement plugins in MLT and load your effects. Then modify showfoto to
> use MLT. It would require layers to showfoto. But it is probably a
> needed feature.
>
> What do you think of this solution? To have a view, you can install
> Kdenlive 0.7.5 from Debian SID and try to process an image with effects.
>
> Kind regards,
> Jean-Michel
>
> _______________________________________________
> Digikam-devel mailing list
> Digikam-devel at kde.org
> https://mail.kde.org/mailman/listinfo/digikam-devel
>