| abstract:In photography, video, and computer graphics, the
gamma
symbol,
g
, represents a numerical parameter
that describes the nonlinearity of intensity reproduction.
Gamma is a mysterious and confusing subject,
because it involves concepts from four disciplines:
physics, perception, photography, and video. This
chapter explains how gamma is related to each of these
disciplines. Having a good understanding of the theory
and practice of
gamma
will enable you to get good
results when you create, process, and display pictures. |
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