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Imagick::setSamplingFactors

(PECL imagick 2, PECL imagick 3)

Imagick::setSamplingFactors — Sets the image sampling factors

说明

public Imagick::setSamplingFactors(array $factors): bool

Sets the image sampling factors.

参数

factors

返回值

成功时返回 true。

示例

示例 #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();
}

?>