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A:\>My name is Dylan
This is where I will be
curating my life,
sharing content I like,
photos I take,
and other internet anomalies.
The back button is your good old friend.
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Ready
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Color cathode ray tube displays are driven by
red,
green, and
blue
voltage signals,
but these RGB signals are not efficient as
a representation for storage and transmission,
since they have a lot of
redundancy.
When color television was being developed,
a backwards compatible solution was needed
so millions of black and white televisions
would not become obsolete.
Engineers separated video signals into
Luminance (Y),
or brightness, and
Chrominance (Pb & Pr),
or color.
YPbPr is an
analog color space in video
electronics.
YPbPr is converted from the RGB video signal,
which is split into three components: Y, Pb, and Pr.
Black and White televisions would continue to
function
using the Luminance
signal to display a monochromatic image.
Color televisions would be able to derive an
RGB signal using the Luminance
signal and
the Chrominance
values for the Red
and Blue
phases.
Signals using YPbPr offer enough separation that
no color multiplexing is needed,
so the quality of the extracted image is
nearly identical to the pre-encoded signal.
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Y = 0.2126
R
+ 0.7152 G
+ 0.0722 B
Pb = B - Y
Pr = R
- Y
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