PHP | Imagick convolveImage() Function

0 0 1 minute read

The Imagick::convolveImage() function is an inbuilt function in PHP which is used to apply a custom convolution kernel to the image.

Syntax:

bool Imagick::convolveImage( $kernel, $channel )

Parameter: This function accepts two parameters as mentioned above and described below:

$kernel: This parameter stores the value of the convolution kernel as an array.
$channel: This parameter stores the value of the channel. The value of default channel is Imagick::CHANNEL_DEFAULT.

Return Value: This function returns True on success.

Original Image:

Below program illustrates the Imagick::convolveImage() function in PHP:

Program:

<?php 
  
// require_once('path/vendor/autoload.php'); 
  
/*Imagick Object*/
$image = new Imagick( 
'https://zambiatek.com/wp-content/uploads/2023/10/zambiatek-17-2.png'); 
  
$Matrix = [-1, -1, -1, -1, 8, -1, -1, -1, -1, ]; 
$image->setImageBias(1 * \Imagick::getQuantum()); 
  
/*convolveImage*/
$image->convolveImage($Matrix); 
  
/*Image Header*/
header('Content-type: image/png'); 
  
// Display output image 
echo $image; 
?> 

Output:

Reference: http://php.net/manual/en/imagick.convolveimage.php

Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, zambiatek Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we’ve already empowered, and we’re here to do the same for you. Don’t miss out – check it out now!