[Bug 253622] New: digikam editor cannot use unsharp mask with radius smaller than one with Canon 7D RAW images

https://bugs.kde.org/show_bug.cgi?id=253622

           Summary: digikam editor cannot use unsharp mask with radius
                    smaller than one with Canon 7D RAW images
           Product: digikam
           Version: 1.4.0
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Image Editor
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Created an attachment (id=52353)
 --> (http://bugs.kde.org/attachment.cgi?id=52353)
Blown out image with USM radius < 1

Version:           1.4.0 (using Devel)
OS:                Linux

When editing a Canon EOS 7D CR2 image and trying to use a radius smaller than
1, the the image "blows out". See the attached screenshot for an example.

Because of the size of the 7D RAWs of 20-30 MB I will not attach an image file.
In case such a file is needed to reproduce the error I' ll find a way to
provide such a file, evt. by creating a small oder medium sized RAW which is
supported by the 7D.

Reproducible: Always

Steps to Reproduce:
digikam -> edit Canon 7D RAW image -> Sharpen -> USM -> Select Radius < 1

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]
          Component|Image Editor                |Unsharp
            Product|digikam                     |digikamimageplugins




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--- Comment #1 from Roman Fietze <rfkd fietze-home de>  2010-10-09 13:06:02 ---
I did some further testing:

- the problem definitively does not exist with RAWs of my 350D, only with the
7D

- the problem also exists using S-RAW, M-RAW and even the JPEG files

- every time I press the "Try" button when editing M-RAW and S-RAW the image
changes from blown out (similar to the screen shot in the attachment) to very
dark and back to blown out, this cannot be seen using the RAW and JPEG version
of the image

- the blow out of the JPEG version has more saturation left over

I provided all four types of images on my server at

  http://www.fietze-home.de/digikam/

The CR2s are S-RAW (#1417), M-RAW (#1418) and RAW (#1420).

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--- Comment #2 from Roman Fietze <rfkd fietze-home de>  2010-10-13 18:20:05 ---
The same thing happens using the BQM, so this seems to happen within the
plugin, not the editor.

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--- Comment #3 from Roman Fietze <rfkd fietze-home de>  2010-10-25 07:27:29 ---
This can be reproduced on other machines as well. This time an openSUSE 11.2
i586.

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|1.4.0                       |2.3.0




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--- Comment #4 from Roman Fietze <rfkd fietze-home de>  2011-12-04 11:20:14 ---
Update:

Still valid for digikam 2.3.0 from the openSUSE 11.4 KDE Updated Apps
repository, x86_64 (didn't test it on i586).

All radii smaller than 1.00 blow out the image, already starting at a radius of
0.99.

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Gilles Caulier <[hidden email]> changed:

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




--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2011-12-17 19:00:29 ---
*** Bug 151172 has been marked as a duplicate of this bug. ***

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--- Comment #6 from Gilles Caulier <[hidden email]> ---
Roman,

This file still valid using last digiKam 4.10.0 ?

Gilles Caulier

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Roman Fietze <[hidden email]> changed:

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

--- Comment #7 from Roman Fietze <[hidden email]> ---
Sorry for the delay, but I had to upgrade to openSUSE 13.2 first.

The bug is fixed in digikam 4.10.0

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |4.11.0

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

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