| Image Processing Toolbox User's Guide | |
Convert RGB values to NTSC color space
Syntax
Description
yiqmap = rgb2ntsc(rgbmap) converts the m-by-3 RGB values in rgbmap to NTSC color space. yiqmap is an m-by-3 matrix that contains the NTSC luminance (Y) and chrominance (I and Q) color components as columns that are equivalent to the colors in the RGB colormap.
YIQ = rgb2ntsc(RGB) converts the truecolor image RGB to the equivalent NTSC image YIQ.
Remarks
In the NTSC color space, the luminance is the grayscale signal used to display pictures on monochrome (black and white) televisions. The other components carry the hue and saturation information.
rgb2ntsc defines the NTSC components using
Class Support
RGB can be of class uint8, uint16, int16, single, or double. RGBMAP can be double. The output is double.
See Also
ntsc2rgb, rgb2ind, ind2rgb, ind2gray
For a full list of the toolbox color space conversion functions, see Color Space Conversions.
| | rgb2ind | rgb2ycbcr | |
© 1994-2005 The MathWorks, Inc.