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PHP | Imagick haldClutImage() Function
  • Last Updated : 20 Nov, 2019

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 then 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:

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

Program 1:




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

Output:
haldClutImage

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




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