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

[Jens Mueller]

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





--- Comment #5 from Jens Mueller <tschenser gmx de>  2010-01-30 10:42:21 ---
Created an attachment (id=40376)
 --> (http://bugs.kde.org/attachment.cgi?id=40376)
preview of convert with additional noise

Warning: this patch is not intended to be merged, it only shows what is ment
and how it will look. 

When converting up to 16bit this patch fills the gaps between the computated
16bit values. But there is currently one problem: All gaps are filled from the
next lower value with noise (to preserve reversible 16bit->8bit conversation
after) - the only value can not be spread is highest, 65535, so the weightened
count of 65535 to any other value changed.

Jens

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