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Digital Video and HD
book

Digital Video and HD

by Charles Poynton
January 2003
Intermediate to advanced content levelIntermediate to advanced
736 pages
30h 54m
English
Morgan Kaufmann
Content preview from Digital Video and HD
Figure 23.8 Gamma in
Mac and PC
are different, owing to the interpretation of
RGB
code values by
th~ rlicnl ....
y~t~m On ~ at- § utp,,§ II IT
"
~hc,-,
~u, Is e~the - nt or rogram~A ~,~k~,~, ~,~'~,~ ~...~
uL
L.I |~.. I.A | ~...,
,Jv,~z ........... o ........ p ..... as if
values are subject to the 2.5-power function of the display (sketched in the lower curve). On a Mac,
the default output LUT imposes a 1/1.45-power function on the code values, then the display imposes
its usual 2.5-power function the concatenation of these two functions results in a 1.72-power func-
tion that relates Mac code value
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Publisher Resources

ISBN: 9781558607927