Imagick::randomThresholdImage
(PECL imagick 2, PECL imagick 3)
Imagick::randomThresholdImage — Creates a high-contrast, two-color image
Descrierea
$low
, float $high
, int $channel = Imagick::CHANNEL_DEFAULT
) : boolChanges the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image. Această metodă este disponibilă dacă Imagick a fost compilat cu ImageMagick de versiunea 6.2.9 sau ulterior.
Parametri
-
low -
The low point
-
high -
The high point
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Valorile întoarse
Întoarce true în caz de succes.
Exemple
Example #1 Imagick::randomThresholdImage()
<?php
function randomThresholdimage($imagePath, $lowThreshold, $highThreshold, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->randomThresholdimage(
$lowThreshold * \Imagick::getQuantum(),
$highThreshold * \Imagick::getQuantum(),
$channel
);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
add a note
