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PHP | Gmagick edgeimage() Function

Last Updated : 22 Mar, 2021
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The Gmagick::edgeimage() function is an inbuilt function in PHP which is used to enhance the image edges using convolution filter of the given radius. Radius 0 is used as auto-selected.
Syntax: 
 

Gmagick Gmagick::edgeimage( $radius )


Parameters: This function accepts a single parameter as $radius which takes the radius of the operation. 
Return Value: This function returns Gmagick object with image enhance.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::edgeimage() function in PHP:
Program 1: 
Original Image: 
 


 

php
<?php 
  
// Create a Gmagick object 
$gmagick = new Gmagick(
'https://media.geeksforgeeks.org/wp-content/uploads/tech.png'); 
  
// Use edgeimage() function 
$gmagick->edgeimage(15);

header('Content-type: image/png'); 
  
// Output the image 
echo $gmagick; 
?> 

Output: 
 


Program 2: 
 

php
<?php 
   
// Create a GmagickDraw object 
$draw = new GmagickDraw(); 
  
// Create GmagickPixel object 
$strokeColor = new GmagickPixel('Red'); 
$fillColor = new GmagickPixel('Green'); 
  
// Set the color, opacity of image 
$draw->setStrokeOpacity(1); 
$draw->setStrokeColor('Red'); 
$draw->setFillColor('Green'); 
  
// Set the width and height of image 
$draw->setStrokeWidth(7); 
$draw->setFontSize(72); 
   
// Function to draw circle  
$draw->circle(250, 250, 100, 150); 
 
$gmagick = new Gmagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 
$gmagick->drawImage($draw); 

// Use edgeimage() function 
$gmagick->edgeimage(10);

// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 
?> 

Output: 
 


Reference: http://php.net/manual/en/gmagick.edgeimage.php
 


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