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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(
   
// 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();
?>

                    

Output:

  

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



Last Updated : 10 Apr, 2023
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