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Imagick::thresholdImage

Changes the value of individual pixels based on a threshold ()
bool Imagick::thresholdImage ( float threshold [, int channel] )

Warning:

This function is currently not documented; only the argument list is available.

Warning:

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

Changes the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image.

Parameters

threshold
channel

Return Values

Returns TRUE on success.