PHP | Imagick convolveImage() Function
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
$image = new Imagick(
$Matrix = [-1, -1, -1, -1, 8, -1, -1, -1, -1, ];
$image ->setImageBias(1 * \Imagick::getQuantum());
$image ->convolveImage( $Matrix );
header( 'Content-type: image/png' );
echo $image ;
?>
|
Output:
Reference: http://php.net/manual/en/imagick.convolveimage.php
Last Updated :
24 Apr, 2020
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