Imagick::randomThresholdImage
(PECL imagick 2, PECL imagick 3)
Imagick::randomThresholdImage — Creates a high-contrast, two-color image
Descrição
$low, float $high, int $channel = Imagick::CHANNEL_DEFAULT): boolChanges the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image. Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.2.9 ou superior.
Parâmetros
-
low -
The low point
-
high -
The high point
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Valor Retornado
Retorna true em caso de sucesso.
Exemplos
Exemplo #1 Imagick::randomThresholdImage()
<?php
function randomThresholdimage($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();
}
?>
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