
Figure 1.16
The "code
100"
problem is mitigated
by using
more than 8 bits to represent
luminance. Here, 12 bits are
used, placing the top end of the
scale at 4095. However, the
majority of these 4096 codes
cannot be distinguished visually.
Ig 1 O0 463
463; 1.01 =100
Ig 1.01
Conversely, monitor
R'G'B'
values
are proportional to reproduced
luminance raised to approximately
the 0.4-power.
The
cathode ray tube
(CRT) is the
dominant display device for tele-
vision receivers and for desktop
computers.
High-quality image reproduction requires a ratio of at
least 30 to 1 between the luminance of white and the
luminance of black, ...