PHP | Imagick getImageGamma() Function

The Imagick::getImageGamma() function is an inbuilt function in PHP which is used to get the Gamma value of the image. The Gamma is a nonlinear operation used to encode and decode luminance or tristimulus values in images.

Syntax:

float Imagick::getImageGamma( void )

Parameters: This function does not accepts any parameters.

Return Value: This function returns True on success.

Errors/Exceptions: It throws an ImagickException on error.

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

Program:

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

// Create a new Imagick Object
$image = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-14.png');

// getImageGamma function
$size = $image->getImageGamma();

// Display the colorspace
print_r($size);
?>
<?php

Output:

0.45454999804497

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