PHP | Imagick recolorImage() Function

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The Imagick::recolorImage() function is an inbuilt function in PHP which is used to translate, scale, shear, or rotate image colors. This function is used as the matrix size variable. Normally 5×5 matrix is used for RGBA and 6×6 is used for CMYK.
Syntax:

bool Imagick::recolorImage( $matrix )

Parameters: This function accepts single parameter $matrix which is used to store the value of the color matrix.
Return Value: This function returns True on success.
Original Image:

Below program illustrate Imagick::recolorImage() function in PHP:
Program 1:

php

<?php 
 
// Create new Imagick object
$imagick = new \Imagick(
'https://zambiatek.com/wp-content/uploads/2023/10/zambiatek-19-5.png');
 
// Color Matrix
$remapColor = [ 1, 0, 0,
                0, 0, 1,
                0, 1, 0, ];
  
// Recolor the Image
$imagick->recolorImage($remapColor);
header("Content-Type: image/jpg");
 
// Display the image
echo $imagick->getImageBlob();
?>

Output:

Program 2:

php

<?php 
 
$string = "Computer Science portal for Geeks!"; 
 
// Creating new image of above String 
// and add color and background 
$im = new Imagick(); 
$draw = new ImagickDraw(); 
 
// Fill the color in image 
$draw->setFillColor(new ImagickPixel('green')); 
 
// Set the text font size 
$draw->setFontSize(50); 
 
$matrix = $im->queryFontMetrics($draw, $string); 
$draw->annotation(0, 40, $string); 
$im->newImage($matrix['textWidth'], $matrix['textHeight'], 
        new ImagickPixel('white')); 
 
// Draw the image         
$im->drawImage($draw); 
 
// Recolor the Image
$remapColor = [ 1, 300, 70,
                10, 0, 40,
                10, 10, 0, ];
  
$im->recolorImage($remapColor);
  
$im->setImageFormat('jpeg'); 
 
header("Content-Type: image/jpg"); 
 
// Display the output image 
echo $im->getImageBlob(); 
?> 

Output:

recolor

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

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