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: This function accepts a single parameters $channel which is used to set the auto-levelling.
Return Value: This function returns True on success.
Below programs illustrate the Imagick::autoLevelImage() function in PHP:
Program 1:
<?php // Create an image object $imagick = new Imagick( // Set the autolevelling of image $imagick->autoLevelImage(); // Display the image header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); ?> |
Output:
Program 2:
<?php // Create an image object $imagick = new Imagick( // Set the autolevelling of image $imagick->autoLevelImage(); // Display the image header("Content-Type: image/gif"); echo $imagick->getImageBlob(); ?> |
Output:
Related Articles:
- PHP | Imagick borderImage() Function
- PHP | Imagick adaptiveResizeImage() Function
- PHP | Imagick addNoiseImage() Function
Reference: http://php.net/manual/en/imagick.autolevelimage.php
