PHP | Imagick getImageDistortion() Function Last Updated : 21 Nov, 2019 Comments Improve Suggest changes Like Article Like Report The Imagick::getImageDistortion() function is an inbuilt function in PHP which is used to compare an image with reconstructed image and returns the specified distortion metric. Syntax: float Imagick::getImageDistortion(Imagick $reference, int $metric) Parameters: This function accepts two parameters as mentioned above and described below: $reference: It specifies the Imagick object which need to compare. $metric: It specifies one of the metric type constants. List of METRIC constants are given below: imagick::METRIC_UNDEFINED (0) imagick::METRIC_MEANABSOLUTEERROR (1) imagick::METRIC_MEANSQUAREERROR (2) imagick::METRIC_PEAKABSOLUTEERROR (3) imagick::METRIC_PEAKSIGNALTONOISERATIO (4) imagick::METRIC_ROOTMEANSQUAREDERROR (5) Exceptions: This function throws ImagickException on error. Return Value: This function returns the distortion metric used on the image. Below programs illustrate the Imagick::getImageDistortion() function in PHP: Program 1: php <?php // Create a new imagick object $imagick1 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); $imagick2 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/20190918234528/colorize1.png'); // Get the distortion with METRIC constant // as imagick::METRIC_ROOTMEANSQUAREDERROR $distortion = $imagick1->getImageDistortion($imagick2, 5); echo $distortion; ?> Output: 0.97254902124405 Program 2: php <?php // Create a new imagick object $imagick1 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); $imagick2 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/20190918234528/colorize1.png'); // Get the distortion with METRIC constant // as imagick::METRIC_PEAKSIGNALTONOISERATIO $distortion = $imagick1->getImageDistortion($imagick2, 4); echo $distortion; ?> Output: 0.020707619325613 Program 3: php <?php // Create a new imagick object $imagick1 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); $imagick2 = new Imagick( 'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); // Get the distortion with METRIC constant // as imagick::METRIC_ROOTMEANSQUAREDERROR $distortion = $imagick1->getImageDistortion($imagick2, 4); echo $distortion; ?> Output: 0 because both images are same. Reference: https://www.php.net/manual/en/imagick.getimagedistortion.php Comment More infoAdvertise with us Next Article PHP Syntax G gurrrung Follow Improve Article Tags : Web Technologies PHP PHP-function PHP-Imagick Similar Reads PHP Tutorial PHP is a popular, open-source scripting language mainly used in web development. It runs on the server side and generates dynamic content that is displayed on a web application. PHP is easy to embed in HTML, and it allows developers to create interactive web pages and handle tasks like database mana 9 min read BasicsPHP SyntaxPHP, a powerful server-side scripting language used in web development. It’s simplicity and ease of use makes it an ideal choice for beginners and experienced developers. This article provides an overview of PHP syntax. 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