(PECL imagick 2, PECL imagick 3)
Imagick::oilPaintImage — Simulates an oil painting
$radius): boolApplies a special effect filter that simulates an oil painting. Each pixel is replaced by the most frequent color occurring in a circular region defined by radius.
radiusThe radius of the circular neighborhood.
   成功时返回 true。
  
示例 #1 Imagick::oilPaintImage()
<?php
function oilPaintImage($imagePath, $radius) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->oilPaintImage($radius);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}
?>
