PHP | Imagick chopImage() Function

PHP | Imagick convolveImage() Function

Last Updated : 24 Apr, 2020

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

<?php

// require_once('path/vendor/autoload.php');

/*Imagick Object*/
$image = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-17.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

PHP | Imagick chopImage() Function

sarthak_ishu11

Improve

Article Tags :

Practice Tags :

Misc

Similar Reads

PHP | Imagick colorizeImage() Function

The Imagick::colorizeImage() function is an inbuilt function in PHP which is used to blends the fill color with each pixel in the image with a specified opacity. Syntax: bool Imagick::colorizeImage( mixed $colorize, mixed $opacity, bool $legacy = FALSE ) Parameters: This function accepts three param

PHP | Imagick cropImage() Function

The Imagick::cropImage() function is an inbuilt function in PHP which is used to extracts the region of the image.Syntax:Â Â int Imagick::cropImage( $width, $height, $x, $y ) Parameters: This function accept four parameters as mention above and describe below.Â Â $width: This parameter is used to spec

PHP | Imagick clutImage() Function

The Imagick::clutImage() function is an inbuilt function in PHP which is used to replace the colors in the image. The second parameter of this function replaces the color in a specific channel.Â Syntax:Â bool Imagick::clutImage( $lookup_table, $channel = Imagick::CHANNEL_DEFAULT ) Parameters: This f

PHP | Imagick chopImage() Function

The Imagick::chopImage() function is an inbuilt function in PHP which is used to remove the region of an image and trim it. This function accepts the dimension of image and chops the area and the dimension from where the image is to be trim. Syntax: bool Imagick::chopImage( $width, $height, $x, $y )

PHP | Imagick compositeImage() Function

The Imagick::compositeImage() function is an inbuilt function in PHP which is used to composite one image into another image and gives composite image. Syntax: bool Imagick::compositeImage( $composite_object, $composite, $x, $y, $channel = Imagick::CHANNEL_DEFAULT ) Parameters: This function accepts

PHP | Imagick coalesceImages() Function

The Imagick::coalscaleImages() function is an inbuilt function in PHP which is used to combined the set of images into single image. It composites a set of images with respect to any page offsets and disposal methods. The animation sequences GIF, MIFF, and MNG are typically start with an image backg

PHP | Imagick autoLevelImage() Function

The Imagick::autoLevelImage() function is an inbuilt function in PHP which is used to adjusts the levels of a particular image channel. The level of the image channel is set the minimum and maximum value of color in the full quantum range. Syntax: bool Imagick::autoLevelImage( $channel ) Parameters:

PHP | Imagick commentImage() Function

The Imagick::commentImage() function is an inbuilt function in PHP which is used to add the comment in an image. Syntax: bool Imagick::commentImage( $comment ) Parameters: This function accepts a single parameter $comment which is used to hold the comment. Return Value: This function returns True on

PHP | Imagick clampImage() Function

The Imagick::clampImage() function is an inbuilt function in PHP which is used to restricts the color range from 0 to the quantum depth. This function has no impact on the image which is already in given range. Syntax: bool Imagick::clampImage( int $channel = Imagick::CHANNEL_DEFAULT ) Parameters: T

PHP | Imagick evaluateImage() Function

The Imagick::evaluateImage() function is an inbuilt function in PHP which is used to apply an expression to the image. It can apply any arithmetic, logical or relational expression to an image and evaluate its result. This operator has many uses ranging from changing the brightness of an image i.e.