Imagick::reduceNoiseImage

(PECL imagick 2.0.0)

Imagick::reduceNoiseImage — Smooths the contours of an image

说明

bool Imagick::reduceNoiseImage ( float $radius )

Smooths the contours of an image while still preserving edge information. The algorithm works by replacing each pixel with its neighbor closest in value. A neighbor is defined by radius. Use a radius of 0 and Imagick::reduceNoiseImage() selects a suitable radius for you.

参数

radius

返回值

成功时返回 TRUE 。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Imagick::reduceNoiseImage()

  <?php
 function  reduceNoiseImage ( $imagePath ,  $reduceNoise ) {
     $imagick  = new \ Imagick ( realpath ( $imagePath ));
    @ $imagick -> reduceNoiseImage ( $reduceNoise );
     header ( "Content-Type: image/jpg" );
    echo  $imagick -> getImageBlob ();
}

 ?>