PHP | Imagick posterizeImage() Function

The Imagick::posterizeImage() function is an inbuilt function in PHP which is used to reduces the image to a limited number of color level.

Syntax:

bool Imagick::posterizeImage( $levels, $dither )

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

• $levels: This parameter is used to set the level of color.
• $dither: This parameter is used to hold the dither Boolean value.

Return Value: This function returns True on success.

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

Program:

<?php

// Create an imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-9.png');

// Use posterizeImage function
$imagick->posterizeImage(8, 'true');

// Set image format
$imagick->setImageFormat('png');

header("Content-Type: image/png");

// Display the output image
echo $imagick->getImageBlob();
?>

Output:

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