(PECL imagick 2.0.0)
Imagick::blackThresholdImage — Forces all pixels below the threshold into black
Is like Imagick::thresholdImage() but forces all pixels below the threshold into black while leaving all pixels above the threshold unchanged.
threshold
The threshold below which everything turns black
성공시에 TRUE
를 반환합니다.
버전 | 설명 |
---|---|
2.1.0 | Now allows a string representing the color as a parameter. Previous versions allow only an ImagickPixel object. |
Example #1 Imagick::blackThresholdImage()
<?php
function blackThresholdImage($imagePath, $thresholdColor) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->blackthresholdimage($thresholdColor);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>