PHP | Imagick adaptiveThresholdImage() Function

The Imagick::adaptiveThresholdImage() function is an inbuilt function in PHP which is used to select a threshold for each pixel based on intensity values in its local neighborhood. This function allows to thresholding of an image whose global intensity histogram doesn’t contain distinctive peaks.

Syntax:

bool Imagick::adaptiveThresholdImage ( $width, $height, $offset )

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

  • $width: This parameter is used to set the width of local neighborhood.
  • $height: This parameter is used to set the height of local neighborhood.
  • $offset: This parameter is used to set mean offset.

Return Value: This function returns TRUE on success.

Below program illustrate the Imagick::adaptiveThresholdImage() function in PHP:

Original Image:
original image

Program:

filter_none

edit
close

play_arrow

link
brightness_4
code

<?php
  
// require_once('path/to/vendor/autoload.php'); 
  
header('Content-type: image/png');
  
$image = new Imagick(
'https://cdncontribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-9.png');
  
$image->adaptiveThresholdImage(1024, 73, 0.625);
  
echo $image;
?>

chevron_right






                        filter_none








Output:

adaptive thresold image


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



          
          
          
          

            

    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
Image
sarthak_ishu11
Check out this Author's contributed articles.
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on  the "Improve Article" button below.