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

이 함수는 현재 문서화 되어있지 않습니다; 인수 목록만을 제공합니다.

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.

성공시에 TRUE를 반환합니다.