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PHP Dokumentation: Function imagick-randomthresholdimage

12. Januar 2010 von werner

Imagick::randomThresholdImage

(PECL imagick 2.0.0)

Imagick::randomThresholdImage — Creates a high-contrast, two-color image

Beschreibung

bool Imagick::randomThresholdImage ( float $low , float $high [, int $channel = Imagick::CHANNEL_ALL ] )

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. Diese Funktion ist verfügbar, wenn Imagick gegendie ImageMagick Version 6.2.9 oder höher kompiliert wurde.

Parameter-Liste

low: The low point
high: The high point
channel: Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.