PHP | Gmagick blurimage() Function

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The Gmagick::blurimage() function is an inbuilt function in PHP which is used to add blur filter to the image.

Syntax:

Gmagick Gmagick::blurimage( $radius, $sigma, $channel )

Parameters: This function accepts three parameters as mentioned above and described below:

$radius: This parameter is used to set blur radius in an image.
$sigma: It sets the standard deviation.
$channel: This parameter set the channel type constant. If it is not supplied then all channels are blurred.

Return Value: This function returns True on success.

Errors/Exceptions: This function throws GmagickException on error. Below programs illustrates the Gmagick::blurimage() function in PHP:

Original Image:

Program 1:

php

<?php 
   
// Create a Gmagick object 
$gmagick = new Gmagick(
'https://zambiatek.com/wp-content/uploads/2023/10/tech-9.png'); 
   
// Use blurimage() function 
$gmagick->blurimage(7, 8);
 
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 blurimage() function 
$gmagick->blurimage(7, 5);
 
// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 
?> 