PHP | Imagick autoLevelImage() Function
Last Updated :
26 Aug, 2019
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
$imagick = new Imagick(
$imagick ->autoLevelImage();
header( "Content-Type: image/jpg" );
echo $imagick ->getImageBlob();
?>
|
Output:
![auto level image](https://media.geeksforgeeks.org/wp-content/uploads/autoLevelImage1.png)
Program 2:
<?php
$imagick = new Imagick(
$imagick ->autoLevelImage();
header( "Content-Type: image/gif" );
echo $imagick ->getImageBlob();
?>
|
Output:
![auto level image](https://media.geeksforgeeks.org/wp-content/uploads/autoLevelImage2.png)
Related Articles:
Reference: http://php.net/manual/en/imagick.autolevelimage.php
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