Imagick::thresholdImage
(PECL imagick 2.0.0)
Imagick::thresholdImage — Changes the value of individual pixels based on a threshold
Description
bool Imagick::thresholdImage ( float $threshold [, int $channel = Imagick::CHANNEL_ALL ] )
Changes the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image.
Parameters
threshold
channel
Return Values
Returns TRUE
on success.
Examples
Example #1 Imagick::thresholdImage()
<?php
function?thresholdimage($imagePath,?$threshold,?$channel)?{
????$imagick?=?new?\Imagick(realpath($imagePath));
????$imagick->thresholdimage($threshold?*?\Imagick::getQuantum(),?$channel);
????header("Content-Type:?image/jpg");
????echo?$imagick->getImageBlob();
}
?>
← Imagick::textureImage
Imagick::thumbnailImage →
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Licensed under the Creative Commons Attribution License v3.0 or later.
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