Imagick::whiteThresholdImage
Imagick::whiteThresholdImage
(PECL imagick 2.0.0)
Imagick::whiteThresholdImage — Force all pixels above the threshold into white
Description
bool Imagick::whiteThresholdImage ( mixed $threshold )
Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged.
Parameters
-
threshold
Return Values
Returns TRUE on success.
Changelog
| Version | Description |
|---|---|
| 2.1.0 | Now allows a string representing the color as a parameter. Previous versions allow only an ImagickPixel object. |
Examples
Example #1 Imagick::whiteThresholdImage()
<?php
function whiteThresholdImage($imagePath, $color) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->whiteThresholdImage($color);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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https://secure.php.net/manual/en/imagick.whitethresholdimage.php
