Force all pixels above the threshold into white Imagick::waveImage Imagick::writeImage The Imagick class PHP Manual Imagick::whiteThresholdImage (No version information available, might be only in CVS)Imagick::whiteThresholdImage — Force all pixels above the threshold into white Description bool Imagick::whiteThresholdImage ( mixed $threshold ) WarningThis function is currently not documented; only its argument list is available. Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged. Parameters threshold Return Values Returns TRUE on success. ChangeLog Version Description 2.1.0 Now allows a string representing the color as a parameter. Previous versions allow only an ImagickPixel object. Imagick::waveImage Imagick::writeImage The Imagick class PHP Manual
