[Digikam-devel] [Bug 262452] duplicate uniqueHash (image hash) in database, wrong thumb on images

[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=262452


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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE




--- Comment #1 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-01-07 23:39:33 ---
Thanks a lot for your research, indeed this is a problem, known and solved (for
the future).

1) This happens usually with TIFF images without metadata. The header of such
files contains several kilobytes of (pretty useless) line offsets. I have not
seen a JPEG which is affected

2) Computing the hash over the whole file is a major performance problem -
scanning would take much longer. The old hash covered 99.9% of cases, we'll see
what the new algorithm brings.

3) Some other problems in context of renaming are probably unrelated

*** This bug has been marked as a duplicate of bug 210353 ***

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