ntsc2rgb - Convert NTSC values to RGB color space

Syntax

rgbmap = ntsc2rgb(yiqmap)
RGB = ntsc2rgb(YIQ)

Description

rgbmap = ntsc2rgb(yiqmap) converts the m-by-3 NTSC (television) color values in yiqmap to RGB color space. If yiqmap is m-by-3 and contains the NTSC luminance (Y) and chrominance (I and Q) color components as columns, then rgbmap is an m-by-3 matrix that contains the red, green, and blue values equivalent to those colors. Both rgbmap and yiqmap contain intensities in the range 0 to 1.0. The intensity 0 corresponds to the absence of the component, while the intensity 1.0 corresponds to full saturation of the component.

RGB = ntsc2rgb(YIQ) converts the NTSC image YIQ to the equivalent truecolor image RGB.

ntsc2rgb computes the RGB values from the NTSC components using

Class Support

The input image or colormap must be of class double. The output is of class double.

Examples

Convert RGB image to NTSC and back.

RGB = imread('board.tif');
NTSC = rgb2ntsc(RGB);
RGB2 = ntsc2rgb(NTSC);

See Also

ind2gray | ind2rgb | rgb2ind | rgb2ntsc

How To

• Color Space Conversions

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