PHP | Imagick haldClutImage() Function

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The Imagick::haldClutImage() function is an inbuilt function in PHP which is used to replace colors in the image using a Hald lookup table. Hald images can be created using HALD color coder.

Syntax:

bool Imagick::haldClutImage( $clut, $channel )

Parameters: This function accepts two parameters as mentioned above and described below:

$clut: This parameter is used to hold the value of Imagick object containing the Hald lookup image.
$channel: This parameter provides the channel constant that is valid for channel mode. More than one channel can be combined using bitwise operator. The defaults channel in Imagick function is Imagick::CHANNEL_DEFAULT.

Return Value: This function returns True on success.

Errors/Exceptions: This function throws ImagickException on error.

Original Image:

The below program illustrates the Imagick::haldClutImage() function in PHP.

Program 1:

php

<?php 
 
// require_once('path/vendor/autoload.php'); 
 
// Create new Imagick Objects
$imagick = new \Imagick(realpath('img/zambiatek.png'));
$imagickPalette = new \Imagick(realpath("img/zambiatek.png"));
     
// Use sepiatoneImage and haldClutImage function
$imagickPalette->sepiatoneImage(50);
$imagick->haldClutImage($imagickPalette);
     
// Image Header
header("Content-Type: image/jpg");
 
// Display the output image
echo $imagick->getImageBlob();
?>

Output:

Program 2:

php

<?php 
 
// require_once('path/vendor/autoload.php');
 
// Create new Imagick Object
$imagick = new Imagick('img/zambiatek.png');
$imagickPalette = new Imagick("img/zambiatek.png");
 
// Use haldClutImage function
$imagickPalette->sepiatoneImage(150);
$imagick->haldClutImage($imagickPalette);
 
// Write output Image
$imagick->writeImage('raiseImae1.png');
 
// Destroy Imagick object
$imagick->destroy();
?>