Bug 249841

Summary: Add option to transfer metadata to final image in "blend bracketed images" tool
Product: [Applications] digikam Reporter: Gandalf Lechner <gandalflechner>
Component: Plugin-Generic-ExpoBlendingAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: wishlist CC: caulier.gilles
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Unlisted Binaries   
OS: Linux   
Latest Commit: Version Fixed In: 2.5.0

Description Gandalf Lechner 2010-09-02 09:57:00 UTC 
Version:           1.4.0 (using KDE 4.5.0) 
OS:                Linux

It would be nice to have options allowing to transfer select metadata to the image resulting from blending a bracketed sequence automatically instead of having to do it manually. Moreover, it might also be a good idea to have the option of automatically assigning some tags to the final picture.

Reproducible: Always




OS: Linux (i686) release 2.6.34-12-pae
Compiler: gcc
Comment 1 caulier.gilles 2010-09-02 10:07:35 UTC 
"...to transfer select metadata to the
image resulting from blending a bracketed sequence automatically instead of
having to do it manually" ???

Which metadata are you talking exactly ?

Gilles Caulier
Comment 2 Gandalf Lechner 2010-09-02 10:24:39 UTC 
(In reply to comment #2)
> Which metadata are you talking exactly ?

Since most metadata of an auto exposure bracketing sequence are the same for all pictures of the sequence, like camera, lens, time/date, gps location, aperture, iso setting ... - I think it would make sense to copy all these to the new image. Probably the only difference between the pictures in the sequence should be the shutter speed.

At the moment, I use exiftool to copy _all_ metadata of the middle image of the three-image sequence to the blended image. It doesn't really make sense to assign a fixed shutter speed to such an image, but this doesn't matter to me in practise. Afterwards, I also add a tag like "HDR/digikam's exposure blend" to keep track of the pictures I created with this tool.

It would be nice if this could be done automatically to make this great tool even more useful!
Comment 3 caulier.gilles 2010-09-02 10:31:03 UTC 
"HDR/digikam's exposure blend" ==> already done in XMP kipiplugins namespace !

http://www.exiv2.org/tags-xmp-kipi.html

Code relevant is there :

http://lxr.kde.org/source/extragear/graphics/kipi-plugins/expoblending/manager/actionthread.cpp#415

It will be appreciate to see a patch about corrected and backported metadata from original images to target image.

Gilles Caulier
Comment 4 caulier.gilles 2011-12-22 13:10:52 UTC 
Gandalf,

This file still valid using kipi-plugins 2.4 ?

Gilles Caulier
Comment 5 Gandalf Lechner 2011-12-22 13:18:54 UTC 
(In reply to comment #4)
> Gandalf,
> 
> This file still valid using kipi-plugins 2.4 ?

I just checked, and happily discovered that someone implemented this wish - thanks a lot!

Gandalf

> 
> Gilles Caulier