[Bug 194722] New: enable the user to only sharpen one channel, e.g. the "value" channel of HSV

[S. Burmeister]

https://bugs.kde.org/show_bug.cgi?id=194722

           Summary: enable the user to only sharpen one channel, e.g. the
                    "value" channel of HSV
           Product: digikam
           Version: unspecified
          Platform: SuSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           0.10 (using KDE 4.2.3)
OS:                Linux
Installed from:    SuSE RPMs

Since the value channel shows the largest differences in terms of brightness,
it is useful to use it for sharpening an image without touching the hue or
saturation.

I'm not sure this is useful for other tools as well, but digikam could provide
the facilities to automatically create a hsv temp file while the user adjusts
the tool and write that temp file back if the user saves the changes.

That way the user can pick the channel the tool should work on while editing a
picture without any knowledge about conversion to hsv etc.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=194722


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Core Plugin
            Version|unspecified                 |0.10.0
            Product|digikam                     |digikamimageplugins




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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=194722


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]
          Component|Core Plugin                 |Sharpen




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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=194722

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|enable the user to only     |Only sharpen one channel,
                   |sharpen one channel, e.g.   |e.g. the "value" channel of
                   |the "value" channel of HSV  |HSV

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[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=194722

[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Sharpen                     |Tool-Sharpen
            Product|digikamimageplugins         |digikam

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[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=194722

Shaza <[hidden email]> changed:

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

--- Comment #1 from Shaza <[hidden email]> ---
Currently an option for "Suppress color noise" is added to unsharp masking if
the checkbox is selected the filter is applied on luminosity(value) channel
only, is that sufficient?

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