Imagick::whiteThresholdImage
PHP function
Edit on GitHub ✎
(PECL imagick 2, PECL imagick 3)
Force all pixels above the threshold into white
Description
Imagick::whiteThresholdImage(mixed $threshold): bool
Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged.
Parameters
threshold
Return Values
Success
Changelog
| Version | Description |
|---|---|
| PECL imagick 2.1.0 | Now allows a string representing the color as a parameter. Previous versions allow only an ImagickPixel object. |
Examples
Imagick::whiteThresholdImage()
php
<?php
function whiteThresholdImage($imagePath, $color) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->whiteThresholdImage($color);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>