[prev in list] [next in list] [prev in thread] [next in thread] 

List:       kde-bugs-dist
Subject:    [Bug 228934] Gamma error in picture scaling
From:       Michael Pyne <mpyne () kde ! org>
Date:       2010-02-28 23:55:06
Message-ID: 20100228235506.EACA1350CC () immanuel ! kde ! org
[Download RAW message or body]

https://bugs.kde.org/show_bug.cgi?id=228934


Michael Pyne <mpyne@kde.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 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.

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching all bug changes.
[prev in list] [next in list] [prev in thread] [next in thread]