[Digikam-devel] [Bug 170170] High quality 8 to 16-bit conversion (histogram repair)

Dik Takken d.h.j.takken at xs4all.nl
Wed Feb 3 15:06:54 CET 2010


https://bugs.kde.org/show_bug.cgi?id=170170





--- Comment #7 from Dik Takken <d h j takken xs4all nl>  2010-02-03 15:06:52 ---
You MUST add noise everywhere, because every pixel has holes... It's a
statistical thing. I did not test the patch, I can't run SVN checkouts at the
moment. Testing is easy though. Just check if:

* The histogram is smooth
* The noise is invisible
* No clipping occurs
* The images degrades gracefully (no banding) when applying a steep curve

If the above checks out, it works.

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