Php/docs/imagick.whitethresholdimage
From Get docs
Imagick::whiteThresholdImage
(PECL imagick 2, PECL imagick 3)
Imagick::whiteThresholdImage — Force all pixels above the threshold into white
Description
public Imagick::whiteThresholdImage
( mixed $threshold
) : bool
Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold unchanged.
Parameters
threshold
Return Values
Returns TRUE on success.
Changelog
| Version | Description |
|---|---|
| PECL imagick 2.1.0 | Now allows a string representing the color as a parameter.
Previous versions allow only an ImagickPixel object. |
Examples
Example #1 Imagick::whiteThresholdImage()
<?phpfunction whiteThresholdImage($imagePath, $color) { $imagick = new \Imagick(realpath($imagePath)); $imagick->whiteThresholdImage($color); header("Content-Type: image/jpg"); echo $imagick->getImageBlob();}?>
