Imagick::randomThresholdImage

(PECL imagick 2.0.0)

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

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

Warning

本函数暂无文档，仅有参数列表。

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.