The ImagickKernel::fromMatrix() function is an inbuilt function in PHP which is used to create a kernel from an 2d matrix of values. The value of 2d matrix is either float if element is used otherwise false if element is skipped.
Syntax:
ImagickKernel ImagickKernel::fromMatrix( array $matrix, array $origin )
Parameters: This function accepts two parameters as mentioned above and described below:
- $matrix: It specifies the matrix of values that define the kernel. Values can be float or false.
- $origin (optional): It specifies the element of kernel that should be used as the origin pixel. This is only required in case of non-square matrix.
Return Value: This function returns a new ImagickKernel object on success.
Below programs illustrate the ImagickKernel::fromMatrix() function in PHP:
Program 1:
<?php   // Create a new imagick object $imagick = new Imagick(   $matrix = [     [-1.5, -1, -0.2],     [0, 1, 1],     [0, 0.5, 1], ];   // Create a kernel from matrix $kernel = ImagickKernel::fromMatrix($matrix);   // Add the filter $imagick->filter($kernel);   // Show the output $imagick->setImageFormat('png'); header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Program 2:
<?php   // Create a new imagick object $imagick = new Imagick(   $matrix = [     [1, 2, -3],     [4, 5, 6],     [7, 8, 9] ];   // Create a kernel from matrix $kernel = ImagickKernel::fromMatrix($matrix);   // Get the matrix $matrix = $kernel->getMatrix();   print("<pre>".print_r($matrix, true)."</pre>"); ?> |
Output:
Array
(
[0] => Array
(
[0] => 1
[1] => 2
[2] => -3
)
[1] => Array
(
[0] => 4
[1] => 5
[2] => 6
)
[2] => Array
(
[0] => 7
[1] => 8
[2] => 9
)
)
Reference: https://www.php.net/manual/en/imagickkernel.frommatrix.php
Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, neveropen 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!
