[Digikam-devel] [Bug 200357] digikam, exif rotation, thumbnail not rotated

Marcel Wiesweg marcel.wiesweg at gmx.de
Sat Aug 1 14:00:41 BST 2009


https://bugs.kde.org/show_bug.cgi?id=200357


Marcel Wiesweg <marcel.wiesweg at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ahuggel at gmx.net,
                   |                            |marcel.wiesweg at gmx.de




--- Comment #1 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-08-01 15:00:39 ---
Andreas, I CC your for some info here. My problem is which orientation flag is
taken into account for the Exif or the Iptc preview.
1) From the spec it seems there is an optional Exif.Thumbnail.Orientation which
determines the rotation of the Exif thumbnail.
2) If there is no Exif.Thumbnail.Orientation, the Exif thumbnail need not be
rotated according to Exif.Image.Orientation?
3) If I change the Exif.Image.Orientation, do I need to change the
Exif.Thumbnail.Orientation or even rotate the thumbnail image data?
4) Does the Exif.Image.Orientation affect the Iptc.Application2.Preview image?
5) So when I change the Exif.Image.Orientation, do I need to do anything about
the IPTC preview? Rotate the actual image data?

Thanks!

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