[Bug 275122] New: Rotating a TIFF file wipes out its metadata

[Guillaume Paumier]

https://bugs.kde.org/show_bug.cgi?id=275122

           Summary: Rotating a TIFF file wipes out its metadata
           Product: digikam
           Version: 2.0.0
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: Metadata
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Created an attachment (id=60750)
 --> (http://bugs.kde.org/attachment.cgi?id=60750)
exiv2 -pa output for the test (rotated) file

Version:           2.0.0 (using KDE 4.6.2)
OS:                Linux

Rotating a TIFF file with metadata in digikam wipes out most of its metadata.

The attachments text files show the output of "exiv2 -pa" on two identical
files, before ("reference") and after ("test") the rotation.

The reference and test files are also available:
http://dl.dropbox.com/u/17707983/rotate-reference.tif
http://dl.dropbox.com/u/17707983/rotate-test.tif

This issue is particularly problematic, because it causes data loss; relevant
metadata like speed, aperture, etc. of a photograph are lost forever.

(One could attempt to restore some of the metadata using the values saved in
the database, unfortunately metadata can't be written to TIFF files; see bug
271757)

Reproducible: Always

Steps to Reproduce:
* Open a TIFF file with metadata (e.g. the attached reference photograph)
* look at the metadata, e.g. using exiv2 -pa <filename.tif>
* rotate the picture in digikam
* look at the metadata again

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[Guillaume Paumier]

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--- Comment #1 from Guillaume Paumier <guillom pom gmail com>  2011-06-07 16:07:46 ---
Created an attachment (id=60751)
 --> (http://bugs.kde.org/attachment.cgi?id=60751)
exiv2 -pa output for the reference (prior to rotation) file

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[Gilles Caulier-4]

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--- Comment #2 from Gilles Caulier <caulier gilles gmail com>  2011-06-07 19:27:42 ---
How do you perform rotation ? in editor, or using album icon view (through
kipi-plugins)

Gilles Caulier

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--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2011-06-07 19:29:46 ---
If you use editor, rotation is performed on touch only image data. Metadata are
transfered to target image using Exiv2.

Andreas,

It can be an libexiv2 issue ?

Gilles Caulier

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[Guillaume Paumier]

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--- Comment #4 from Guillaume Paumier <guillom pom gmail com>  2011-06-07 20:27:09 ---
The problem appears (at least) when rotating using the icon in the album view.

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--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2011-06-07 21:01:23 ---
From iconview, kipi-plugins is used, and workflow is different.

Image is rotated using libtiff, and after metadata after updated using Exiv2.

Note : can ypu confirm that rotating through Image editor or Batch Queue
Manager in digiKam do not lost metadata ?

Gilles Caulier

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[Guillaume Paumier]

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--- Comment #6 from Guillaume Paumier <guillom pom gmail com>  2011-06-07 21:41:07 ---
(In reply to comment #5)
> From iconview, kipi-plugins is used, and workflow is different.
>
> Image is rotated using libtiff, and after metadata after updated using Exiv2.

Then maybe this is caused by bug 271757.

> Note : can you confirm that rotating through Image editor or Batch Queue
> Manager in digiKam do not lost metadata ?

As far as my testing can tell:
* Rotating through the image editor seems to preserve the metadata;
* Unless I'm doing something wrong, rotating through the batch queue manager
doesn't seem to rotate at all (!).

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--- Comment #7 from Gilles Caulier <caulier gilles gmail com>  2011-06-08 06:48:14 ---
Created an attachment (id=60772)
 --> (http://bugs.kde.org/attachment.cgi?id=60772)
Batch Queue Manager Rotate tool in action

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--- Comment #8 from Gilles Caulier <caulier gilles gmail com>  2011-07-06 11:26:28 ---
We need feedback using a recent version. 2.0.0 RC is out, please test...

Thanks in advance

Gilles Caulier

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[Marcel Wiesweg]

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--- Comment #9 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-07-11 17:03:43 ---
I can confirm this as a kipi-plugins problem.
Took a random metadata, used icons to rotate, metadata is gone.
Command line output:

digikam(5413)/KIPI (general)
KIPIJPEGLossLessPlugin::ImageRotate::rotateImageMagick: ImageMagick Command
line:  ("convert", "-rotate", "90",
"/media/fotos/Digikam Sample/TIFF/01-TIF - 8bits - RGB- NONE_1.tiff[0]",
"/tmp/kde-marcel/digikamTJ5413kipiplugin-rotate.tiff")
convert: /media/fotos/Digikam Sample/TIFF/01-TIF - 8bits - RGB- NONE_1.tiff:
invalid TIFF directory; tags are not sorted in ascending order.
`TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/704.
convert: /media/fotos/Digikam Sample/TIFF/01-TIF - 8bits - RGB- NONE_1.tiff:
unknown field with tag 11 (0xb) encountered. `TIFFReadDirectory' @
warning/tiff.c/TIFFWarnings/704.
convert: /media/fotos/Digikam Sample/TIFF/01-TIF - 8bits - RGB- NONE_1.tiff:
unknown field with tag 18246 (0x4746) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/704.
convert: /media/fotos/Digikam Sample/TIFF/01-TIF - 8bits - RGB- NONE_1.tiff:
unknown field with tag 18249 (0x4749) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/704.
digikam(5413)/KEXIV2 KExiv2Iface::KExiv2::setImageOrientation:
Exif.Image.Orientation tag set to:  1
digikam(5413)/KEXIV2 KExiv2Iface::KExiv2::setImagePreview: JPEG image preview
size: ( 682  x  1024 ) pixels -  83729  bytes
digikam(5413)/KIPI (general)
KIPIJPEGLossLessPlugin::Utils::updateMetadataImageMagick: ImageMagick Command
line:  ("mogrify", "-profile",
"/tmp/kde-marcel/digikamhX5413kipipluginsexif.app1", "-profile",
"/tmp/kde-marcel/digikamSL5413kipipluginsiptc.8bim", "-profile", "/tmp/kde-
marcel/digikamnn5413kipipluginsxmp.xmp",
"/tmp/kde-marcel/digikamTJ5413kipiplugin-rotate.tiff[0]")

Looks as if we used temp files with stored metadata
and then mogrify -profile to rewrite the metadata?

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Metadata                    |JPEGLossLess
            Product|digikam                     |kipiplugins




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--- Comment #12 from Guillaume Paumier <guillom pom gmail com>  2012-01-28 15:16:05 ---
I confirm that afaict the problem has disappeared with the current
implementation in git/master. Rotating using the album icons now preserves the
metadata in TIFF files.

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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED




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