Imagick::embossImage

(PECL imagick 2.0.0)

Imagick::embossImage — Returns a grayscale image with a three-dimensional effect

说明

Imagick::embossImage ( float $radius , float $sigma ) : bool

Returns a grayscale image with a three-dimensional effect. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and it will choose a suitable radius for you.

参数

radius: The radius of the effect
sigma: The sigma of the effect

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Imagick::embossImage()


<?php
function embossImage($imagePath, $radius, $sigma) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->embossImage($radius, $sigma);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

User Contributed Notes

DJ Mike 11-Apr-2011 11:17


embossImage() will actually return a color image with a 3D effect. If you want a gray scale image, you can use imagefilter() from the regular GD functions. 



<?php

header("Content-type: image/jpeg");

$image = new Imagick("opossum.jpg"); 

$image->embossImage( 0, 1 );

echo $image;

?>