Imagick::embossImage
(PECL imagick 2.0.0)
Imagick::embossImage — Returns a grayscale image with a three-dimensional effect
说明
$radius
, float $sigma
)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 ();
}
?> 用户评论:
[#1] DJ Mike [2011-04-11 23:17:45]
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;
?>