PHP 7.1.0 Release Candidate 3 Released

Imagick::randomThresholdImage

(PECL imagick 2.0.0)

Imagick::randomThresholdImageCreates a high-contrast, two-color image

Descrição

bool Imagick::randomThresholdImage ( float $low , float $high [, int $channel = Imagick::CHANNEL_ALL ] )

Changes 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 está disponível se o PHP foi compilado com o 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 no 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();
}

?>

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top