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List: konq-bugs
Subject: [Bug 228934] Gamma error in picture scaling
From: Michael Pyne <mpyne () kde ! org>
Date: 2010-02-28 23:55:06
Message-ID: 20100228235506.DFA8035834 () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=228934
Michael Pyne <mpyne@kde.org> changed:
What |Removed |Added
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CC| |mpyne@kde.org
--- Comment #1 from Michael Pyne <mpyne kde org> 2010-03-01 00:55:05 ---
Please do note that the example is contrived to fail on algorithms that do not
do perfect gamma correction internally (which is much slower). I personally
would argue that having slower image scaling to be accurate to a given gamma
would most of the time be a negative effect, especially in the context of a web
browser.
However it is true that most images are handled in a color space using gamma so
mis-rendering of images is possible if not gamma-corrected in the colorspace
used by the image. From what I understand if the image does not provide the
gamma used (or otherwise define it) a good default choice is gamma = 2.2.
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