PHP 8.3.0 RC 6 available for testing

Imagick::uniqueImageColors

(PECL imagick 2,PECL imagick 3)

Imagick::uniqueImageColorsDiscards all but one of any pixel color

说明

public Imagick::uniqueImageColors(): bool

Discards all but one of any pixel color. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。

参数

此函数没有参数。

返回值

成功时返回 true

示例

示例 #1 Imagick::uniqueImageColors()

<?php
function uniqueImageColors($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
//Reduce the image to 256 colours nicely.
$imagick->quantizeImage(256, \Imagick::COLORSPACE_YIQ, 0, false, false);
$imagick->uniqueImageColors();
$imagick->scaleimage($imagick->getImageWidth(), $imagick->getImageHeight() * 20);
header("Content-Type: image/png");
echo
$imagick->getImageBlob();
}

?>

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