Imagick::randomThresholdImage

(PECL imagick 2.0.0)

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

설명

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. 이 메쏘드는 Imagick을 ImageMagick 6.2.9 이상으로 컴파일 했을 때만 사용할 수 있습니다.

인수

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.

반환값

성공시에 TRUE를 반환합니다.