[digikam] [Bug 373321] New: Feature Request: check for duplicates during import

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https://bugs.kde.org/show_bug.cgi?id=373321

            Bug ID: 373321
           Summary: Feature Request: check for duplicates during import
           Product: digikam
           Version: 5.3.0
          Platform: MS Windows
                OS: MS Windows
            Status: UNCONFIRMED
          Keywords: usability
          Severity: normal
          Priority: NOR
         Component: Import
          Assignee: [hidden email]
          Reporter: [hidden email]
  Target Milestone: ---

Hello,
after testing some different picture managing programs I found
that Digikam is a really superb application.

However, I think it would be nice if duplicates could be found in the importing
process. It should be avoided to add duplicates to the collection rather than
searching for duplicates in already imported material.

Especially if pictures are shared with friends or copied to an importing
directory manually, the applictaion doesn't recognise the pictures as already
known.

Maybe the already existing duplicates function can be integrated into the
import function with an option to not import duplicates.

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[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Feature Request: check for  |Add a step to check for
                   |duplicates during import    |duplicates during import
           Severity|normal                      |wishlist
                 CC|                            |[hidden email]

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[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Add a step to check for     |Add a step to check for
                   |duplicates during import    |duplicates during import
                   |                            |from camera

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Mario Frank <[hidden email]> changed:

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                 CC|                            |[hidden email]

--- Comment #1 from Mario Frank <[hidden email]> ---
Hello,

I agree that it should be avoided to import duplicate pictures. But even if a
similarity threshold of 100% is used, the images do not need to be fully
identical. In some cases, the metadata of the pictures may be different. In
this case, it is hard to decide for an algorithm if the image should be
imported.

Any other opinions?

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--- Comment #2 from [hidden email] ---
Well, typical use cases, where this kind of process must be disabled : high
speed shot sequence while sport events (for ex).

With my camera for ex (Sony A77), i can take 12 img/s. Photos are very very
similar. I'm sure that algorithm will detect all images as duplicates. And it's
normal.

For this workflow, i sort myself the items in Light table. I select the best
one based on composition, movements, subjects place, etc.

In other word, this can pre process while download must be disabled easily in
GUI.

Gilles Caulier

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[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Import                      |Searches-Fuzzy
            Summary|Add a step to check for     |Add a step to check for
                   |duplicates during import    |duplicates search while
                   |from camera                 |import from camera

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tuxflo <[hidden email]> changed:

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--- Comment #3 from tuxflo <[hidden email]> ---
I agree with the Multishot issue, but I'm still looking for that feature:
when migrating all images to a nice and sorted digikam library I often do not
know if the old SD card I found during cleanup or the old external backupdrive
contain some images that are not already in the library.

So I would appreciate this as an optional feature, adding it in the context
menu "Download New images (duplicate check)"
Maybe an additional step for checking which images will be imported and which
not would be helpful to review the process.

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