(PECL imagick 2, PECL imagick 3)
Imagick::randomThresholdImage β Creates a high-contrast, two-color image
$low, float $high, int $channel = Imagick::CHANNEL_DEFAULT): boolChanges the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image. Π¦Π΅ΠΉ ΠΌΠ΅ΡΠΎΠ΄ Π΄ΠΎΡΡΡΠΏΠ½ΠΈΠΉ, ΡΠΊΡΠΎ Imagick Π·ΡΠ±ΡΠ°Π½ΠΈΠΉ Π· ImageMagick Π²Π΅ΡΡΡΡ 6.2.9 Π°Π±ΠΎ Π½ΠΎΠ²ΡΡΠΎΡ.
lowThe low point
highThe high point
channelProvide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
ΠΠΎΠ²Π΅ΡΡΠ°Ρ true Π² ΡΠ°Π·Ρ ΡΡΠΏΡΡ
Ρ.
ΠΡΠΈΠΊΠ»Π°Π΄ #1 Imagick::randomThresholdImage()
<?php
function randomThresholdimage($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();
}
?>