(No version information available, might be only in CVS)
Imagick::whiteThresholdImage — Force all pixels above the threshold into white
This function is currently not documented; only the argument list is available.
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.
Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged.
Returns TRUE on success.