[digikam] [Bug 338779] New: Hidden watermarking (based on wavelets or fourier transforms)

[DrSlony-4]

https://bugs.kde.org/show_bug.cgi?id=338779

            Bug ID: 338779
           Summary: Hidden watermarking (based on wavelets or fourier
                    transforms)
           Product: digikam
           Version: 4.2.0
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
          Assignee: [hidden email]
          Reporter: [hidden email]

This is a feature request for a hidden watermark tool in the BQM, so that we
can conceal a hidden plain-text or image watermark into our photos.

I am aware of a wavelet-based method and a fourier-based one.
http://www.cs.cornell.edu/topiwala/wavelets/report.html

You can do this using Mathmap or G'MIC, however those tools do not work in
batch. It would be awesome if digiKam let us do this!

Reproducible: Always

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[DrSlony-4]

https://bugs.kde.org/show_bug.cgi?id=338779

DrSlony <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]

--- Comment #1 from DrSlony <[hidden email]> ---
G'MIC's "Fourier watermark" can be found in the "Spectral filters" menu:
https://gmicol.greyc.fr/
A discussion about it:
https://www.flickr.com/groups/gmic/discuss/72157624462331405/

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338779

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Batch Queue Manager
            Summary|Hidden watermarking (based  |Add new tool to embed
                   |on wavelets or fourier      |hidden watermarking (based
                   |transforms)                 |on wavelets or Fourier
                   |                            |transforms)
                 CC|                            |[hidden email]

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[DrSlony-4]

https://bugs.kde.org/show_bug.cgi?id=338779

--- Comment #2 from DrSlony <[hidden email]> ---
G'MIC Reference: http://gmic.sourceforge.net/reference.shtml#watermark_fourier

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[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=338779

[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|BatchQueueManager           |BatchQueueManager-Tool-Inse
                   |                            |rtText

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