radius | float | The radius of the Gaussian, in pixels, not counting the center pixel |
sigma | float | The standard deviation of the Gaussian, in pixels |
function charcoalImage($imagePath, $radius, $sigma) { $imagick = new \Imagick(realpath($imagePath)); $imagick->charcoalImage($radius, $sigma); header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); }