Imagick::sketchImage
(PECL imagick 2.0.0)
Imagick::sketchImage — Simulates a pencil sketch
说明
Imagick::sketchImage
( float
$radius
, float $sigma
, float $angle
) : boolSimulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Imagick::sketchImage() selects a suitable radius for you. Angle gives the angle of the blurring motion. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
参数
-
radius -
The radius of the Gaussian, in pixels, not counting the center pixel
-
sigma -
The standard deviation of the Gaussian, in pixels.
-
angle -
Apply the effect along this angle.
返回值
成功时返回 TRUE。
范例
Example #1 Imagick::sketchImage()
<?php
function sketchImage($imagePath, $radius, $sigma, $angle) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->sketchimage($radius, $sigma, $angle);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>