Imagick::setSamplingFactors
(PECL imagick 2, PECL imagick 3)
Imagick::setSamplingFactors — Sets the image sampling factors
Description
public Imagick::setSamplingFactors ( array $factors ) : bool
Sets the image sampling factors.
Parameters
-
factors
Return Values
Returns true
on success.
Examples
Example #1 Imagick::setSamplingFactors()
<?php function setSamplingFactors($imagePath) { $imagePath = "../imagick/images/FineDetail.png"; $imagick = new \Imagick(realpath($imagePath)); $imagick->setImageFormat('jpg'); $imagick->setSamplingFactors(array('2x2', '1x1', '1x1')); $compressed = $imagick->getImageBlob(); $reopen = new \Imagick(); $reopen->readImageBlob($compressed); $reopen->resizeImage( $reopen->getImageWidth() * 4, $reopen->getImageHeight() * 4, \Imagick::FILTER_POINT, 1 ); header("Content-Type: image/jpg"); echo $reopen->getImageBlob(); } ?>
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https://www.php.net/manual/en/imagick.setsamplingfactors.php