IMAGICK.WHITETHRESHOLDIMAGE(3) 1 IMAGICK.WHITETHRESHOLDIMAGE(3)
Imagick::whiteThresholdImage - Force all pixels above the threshold into white
SYNOPSIS
bool Imagick::whiteThresholdImage (mixed $threshold)
DESCRIPTION
Is like Imagick::ThresholdImage() but force all pixels above the threshold into white while leaving all pixels below the threshold
unchanged.
PARAMETERS
o $threshold
-
RETURN VALUES
Returns TRUE on success.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 2.1.0 | |
| | |
| | Now allows a string representing the color as a |
| | parameter. Previous versions allow only an Imag- |
| | ickPixel object. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
Imagick.whiteThresholdImage(3)
<?php
function whiteThresholdImage($imagePath, $color) {
$imagick = new Imagick(realpath($imagePath));
$imagick->whiteThresholdImage($color);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
PHP Documentation Group IMAGICK.WHITETHRESHOLDIMAGE(3)