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The
YIQ color space
In the YIQ color space Y component
represent the intensity, the I and Q component represents the color
information. By separating the intensity from the color information
makes the YIQ color space very attractive to TV broadcasting, because
it helps maintain compatibility with monochrome TV standards.
The YIQ model also takes advantage
of the fact that the human eye is more sensitive to changes in luminance
than changes to hue or saturation.
The Y, I, Q components are assumed
to be in the [0, 1] or [0, 255] range.
The RGB to YIQ conversion is defined
as:
[Y]
[0.299 0.587
0.114] [R]
[I]
= [0.596
-0.275 -0.321]
[G]
[Q]
[0.212 -0.523
-0.311] [B]
In order to obtain the RGB values from
a set of YIQ values, simply perform the inverse matrix operation.
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Imaging Toolkits >
Color Space Conversion > YIQ
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