PHP | Imagick quantizeImage() Function

The Imagick::quantizeImage() function is an inbuilt function in PHP which is used to analyze the colors within a reference image.

Syntax:

bool Imagick::quantizeImage ( int $numberColors, int $colorspace, 
int $treedepth, bool $dither, bool $measureError)

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

• $numberColors: It specifies the number of colors.
• $colorspace: It specifies the colorspace.
• $treedepth: It specifies the depth of tree.
• $dither: It specifies whether to enable dither or not.
• $measureError: It specifies whether to enable error measurement or not.

Return Value: This function returns TRUE on success.

Exceptions: This function throws ImagickException on error.

Below given programs illustrate the Imagick::quantizeImage() function in PHP:

Program 1:

<?php

// Create a new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Quantize the Image
$imagick->quantizeImage(100, 8, 256, true, false);

// Display the image
$imagick->setImageFormat('png');
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');

// Quantize the Image
$imagick->quantizeImage(2, 50, 256, true, false);

// Display the image
$imagick->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?>

Output:

Reference: https://www.php.net/manual/en/imagick.quantizeimage.php