ITU-R BT.1886 is the reference
EOTF This article is about the transfer functions used in pictures and videos and describing the relationship between electrical signal, scene light and displayed light.
Definition
The opto-electronic transfer function (OETF) is the transfer functi ...
of
SDR-TV. It is a
gamma 2.4 transfer function (a
power law with a 2.4 exponent) considered as a satisfactory approximation of the response characteristic of
CRT to electrical signal. It has been standardized by
ITU in March 2011. It is used for
Rec. 709 (
HD-TV
High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the g ...
) and
Rec. 2020 (
UHD-TV).
Definition
BT.1886 EOTF is as follows:
where
*
is the screen luminance, in
cd/m2.
*
is the input video signal level, in the range