# Imagick::edgeImage

(PECL imagick 2, PECL imagick 3)

Imagick::edgeImage — Enhance edges within the image

### 说明

public Imagick::edgeImage(float `$radius`): bool

Enhance edges within the image with a convolution filter of the given radius. Use radius 0 and it will be auto-selected.

### 参数

`radius`

  The radius of the operation.

### 返回值

成功时返回 `true`。

### 错误／异常

错误时抛出 ImagickException。

### 示例

示例 #1 Imagick::edgeImage()

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