PHP | Imagick setImageGamma() Function

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(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// 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(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// 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