The Imagick::thresholdImage() function is an inbuilt function in PHP which is used to changes the value of individual pixels based on the threshold value.
Syntax:
bool Imagick::thresholdImage( $threshold, $channel )
Parameters: This function accepts two parameters as mentioned above and described below:
- $threshold: This parameter set the threshold value.
- $channel: This parameter set the channel of image. CHANNEL_DEFAULT is used as a default channel.
Return Value: This function returns True on success.
Below program illustrates the Imagick::thresholdImage() function in PHP:
Program:
<?php   // Create an imagick object $imagick = new Imagick(   // Use thresholdimage function $imagick->thresholdimage(0.5, 2); header("Content-Type: image/jpg");   // Display the output image echo $imagick->getImageBlob(); ?> |
Output:
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Reference: http://php.net/manual/en/imagick.thresholdimage.php
