[Digikam-devel] [Bug 210353] digikam duplicates icons for TIFF iles

[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=210353





--- Comment #12 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-12-09 18:41:43 ---
It's a content-based hash, but not over the whole file, only over parts, more
precisely, the first 8kb. It's assumed that within the first 8k image data is
contained. That also fails for your pictures. So your peculiarities here
include:
- apparently no compression, normally lossless compression already results in
differing file sizes
- no metadata
- identical file content in first 8kb.

A possible solution is to extend the 8kb, or take other small data parts from
the middle and end of the file. I must think about the implications of changing
the hash creation.

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