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Glossary of terms
point. White balancing assumes that when a
white object can be made to look white, the
other color levels will also be accurate. White
balancing is used to correct improper color
levels of an image that are due to varying
lighting conditions or incorrect camera
settings. White balancing can be performed
using the Matrox color correction effect, and
is also available as a setting on most cameras.
white level The brightest “legal” level of a
video signal (reference white), which is at 100
IRE. See also black level, super black, and
super white.
wipe A transition in which one image is
gradually replaced by another image that is
revealed in a given pattern. For example, the
second image could be revealed from the top
of the screen downwards until it fills the
entire screen. See also organic wipe.
X
x-y-z coordinate system A 3D
positioning system that includes a third (z)
axis running perpendicular to the horizontal
(x) and vertical (y) axes. The x-y-z coordinate
system is used in computer graphics for
creating models with height, width, and
depth, and for moving models in 3D space.
Y
Y waveform A specialized scope that
displays the luminance (Y) values of a video
signal.
Y/C video See S-Video.
YC waveform A specialized scope that
displays the combined luminance (Y) and
chrominance (C) of a video signal.
Y, Pb, Pr video See Y, R-Y, B-Y video.
Y, R-Y, B-Y vid eo An analog component
video signal comprised of three channels: Y
(luminance), R-Y (red minus luminance), and
B-Y (blue minus luminance). Also called Y,
Pb, Pr video.