(PECL imagick 2.0.0)
ImagickPixel::getColorValue — Gets the normalized value of the provided color channel
Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.
Retrieves the value of the color channel specified, as a floating-point number between 0 and 1.
The channel to check, specified as one of the Imagick channel constants.
The value of the channel, as a normalized floating-point number, throwing ImagickPixelException on error.