Imagick::sketchImage()
(PECL imagick 2.0.0)
Simulates a pencil sketch
说明
Imagick::sketchImage(float $radius,float $sigma,float $angle): bool
Simulates 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(); } ?>