Some people have understood this issue for a long time. I remember
reading Jim Blinn's article, "A Ghost in a Snowstorm", at least as
far back as 1998:
To correctly composite two gamma-corrected images, the
images should first be converted back to linear space, composited,
then have gamma correction re-applied.
-Dave
On 9/15/2014 9:15 AM, Werner LEMBERG
wrote:
I've just found this interesting site:
http://www.4p8.com/eric.brasseur/gamma.html
Given that really most software today fails to correctly scale images
with proper gamma, there's no wonder that there are similar problems
with the gamma stuff in the FreeType's CFF module. We are ahead of
time, it seems...
Werner
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