Imagick::thresholdImage

(PECL imagick 2.0.0)

Imagick::thresholdImage — Changes the value of individual pixels based on a threshold

bool Imagick::thresholdImage ( float $threshold [, int $channel= Imagick::CHANNEL_ALL ] )

Warning

Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.

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.

Returns TRUE on success.