[digiKam-users] Face tag position and image rotation

Maik Qualmann metzpinguin at gmail.com
Sun Aug 1 12:34:17 BST 2021

Yes, the behavior has been changed. In the past, the face rectangles for the 
aligned image were saved by digiKam. There is no standard and no information 
on how the orientation was when the face rectangles were saved. But since all 
other programs (except Windows Photo Gallery) like Picasa and others save the 
face rectangles for the unaligned image, digiKam has changed the behavior. 
Before you change your images, write the metadata from the database to the 
images so that the new orientation is used. Incidentally, the face rectangles 
are still stored in the digiKam database for the aligned image. 


Am Sonntag, 1. August 2021, 13:12:58 CEST schrieb Vlad-Mihai Sima:
> Hello,
> I have recently noticed (at least in versions 7.2 and 7.3, but not sure
> since what version) that face tags for old pictures that are rotated are
> not displayed correctly anymore.
> If I take the old picture, clear the tags, manually tag the faces, then I
> look at the values in the XMP region metadata in the file (using exiv2
> command line utility to read them for example) it looks like now the face
> tags coordinates are using the picture coordinates before the rotation.
> If I look at the values in XMP regions metadata (using exiv2) in the old
> picture, with the older face tags, the coordinates in that picture seem to
> be from after the picture rotation.
> I have checked and I have several pictures affected by this.
> I would like to know if this is intentional or if it is a bug? If it is
> intentional is there any script to convert to the new convention?
> Thanks,
> Vlad

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