php教程

Imagick::embossImage

(PECL imagick 2.0.0)

Imagick::embossImageReturns 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;
?>

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