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.
function embossImage($image_path, $radius, $sigma)
{
$imagick = new \Imagick(realpath($image_path));
$imagick->embossImage($radius, $sigma);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}