ATI Technologies 100 437807 - Radeon X1950 Pro HD PCI Express 256MB Video Card, User Manual

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Color Component
Three color components—Red, Green, and Blue—combine in various
intensities to determine the color of each pixel on the screen. The values of
each color component are graphically represented by a corresponding color
curve.
Color Correction
Correct discrepancies between the real color value and the way a screen
displays it. Color discrepancies can be caused by a variety of sources,
including the lighting conditions in the work area and gradual shifts in color
over time on monitors or flat panel displays.
Color Curve
A color curve represents all possible intensity values (from 0 to 255) for a
color component (Red, Green or Blue). For each color curve, the horizontal
axis represents the input value (the color value a program wants to display),
while the vertical axis represents the output value (the color value that the
display driver will write to the screen). A value of 0 (in the lower left corner)
represents the complete absence of that particular color, while a value of 255
(in the upper right corner) represents the “full” strength for that color.
Component Video
Typically used on DVD players and HDTV systems, component video is a
standard Red/Green/Blue (RGB) color signal for televisions. The signal is
split and compressed into separate luminance and color values—luminance
(“Y”), red minus luminance (R-Y), and blue minus luminance (B-Y). The
value for green is not transmitted. The display device automatically “fills in”
the color values that are not red or blue. DVDs are encoded using component
video, so display devices will provide enhanced playback when this type of
connection is used. A common variant of this format used in North America
is YPbPr.
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