The Imagick::setImageGamma() function is an inbuilt function in PHP which is used to set the image gamma.
Syntax:
bool Imagick::setImageGamma( float $gamma )
Parameters: This function accepts a single parameter $gamma which holds the gamma for the image.
Return Value: This function returns TRUE on success.
Exceptions: This function throws ImagickException on error.
Below given programs illustrate the Imagick::setImageGamma() function in PHP:
Program 1:
<?php   // Create a new imagick object $imagick = new Imagick(   // Set the Gamma $imagick->setImageGamma(5);   // Display the image header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Program 2:
<?php   // Create a new imagick object $imagick = new Imagick(   // Set the Gamma $imagick->setImageGamma(15);   // Add a border $imagick->borderImage('black', 2, 2);   // Display the image header("Content-Type: image/png"); echo $imagick->getImageBlob(); ?> |
Output:
Reference: https://www.php.net/manual/en/imagick.setimagegamma.php
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