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PHP | Imagick opaquePaintImage() Function
  • Last Updated : 27 Aug, 2019

The Imagick::opaquePaintImage() function is an inbuilt function in PHP which is used to replace the target color with the specified fill color value of any pixel that matches the target color.

Syntax:

bool Imagick::opaquePaintImage( $target, $fill, $fuzz,
                   $invert, $channel = Imagick::CHANNEL_DEFAULT ] )

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

  • $target: This parameter holds the ImagickPixel object or target color which need to be changed.
  • $fill: This parameter holds the color for replacement.
  • $fuzz: This parameter holds the amount of fuzz that will be in float type.
  • $invert: Switch between 0 and 1 where 0 is normal and 1 is inverse.
  • $channel: This parameter holds the Imagick channel constants that provide any channel constant which is valid for channel mode. More than one channel can be combined using bitwise operators.

Return Value: This function returns TRUE on success or FALSE on failure.

Below programs illustrate the Imagick::opaquePaintImage() function in PHP:



Program 1:




<?php
   
// Image Path
$imagePath
   
// Target color
$target = 'rgb(255, 255, 255)';
   
// Replacing target color with another color
$fill = 'rgb(255, 234, 128)';
$fuzz = '0.1';
  
// Initialize invert variable
$invert = '0';
   
$imagick = new \Imagick($imagePath);
  
// Set the image format
$imagick->setimageformat('png');
    
$imagick->opaquePaintImage(
    $target, $fill, $fuzz * \Imagick::getQuantum(), $invert
);
  
// Use despeckleimage() function to reduce
// the speckle noise in an image
$imagick->despeckleimage();
    
header("Content-Type: image/png");
  
// Display the output image
echo $imagick->getImageBlob();
   
?>

Output:

Program 2:




<?php
   
// Image Path
$imagePath
   
// Target color
$target = 'rgb(255, 255, 255)';
   
// Replacing target color with another color
$fill = 'rgb(21, 200, 236)';
$fuzz = '0.1';
  
// Initialize invert variable
$invert = '0';
   
$imagick = new \Imagick($imagePath);
  
// Set the image format
$imagick->setimageformat('png');
    
$imagick->opaquePaintImage(
    $target, $fill, $fuzz * \Imagick::getQuantum(), $invert
);
    
header("Content-Type: image/png");
  
// Display the output image
echo $imagick->getImageBlob();
   
?>

Output:

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




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