Imagick::randomThresholdImage

(PECL imagick 2.0.0)

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

Descrierea

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. Această metodă este disponibilă dacă Imagick a fost compilat cu ImageMagick de versiunea 6.2.9 sau ulterior.

Parametri

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. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

Valorile întroarse

Întoarce TRUE în caz de succes.

add a note User Contributed Notes
Imagick::randomThresholdImage

There are no user contributed notes for this page.

Imagick::readImage

Imagick::raiseImage

Last updated: Fri, 20 Nov 2009