PHP | Imagick getImageChannelStatistics() Function

The Imagick::getImageChannelStatistics() function is an inbuilt function in PHP which is used to get the statistics for each channel in the image.

Syntax:

array Imagick::getImageChannelStatistics( void )

Parameters: This function does not accept any parameters.

Exceptions: This function throws ImagickException on error.

Return Value: This function returns an array with statistical data as array members.

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

Program 1:

<?php

// Create new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Get the statistics
$statistics = $imagick->getImageChannelStatistics();
print("<pre>".print_r($statistics, true)."</pre>");
?>

Output:

Array
(
    [0] => Array
        (
            [mean] => 0
            [minima] => 1.7976931348623E+308
            [maxima] => -1.7976931348623E+308
            [standardDeviation] => 0
            [depth] => 1
        )

    [1] => Array
        (
            [mean] => 56510.812968516
            [minima] => 0
            [maxima] => 65535
            [standardDeviation] => 20404.259764873
            [depth] => 8
        )

    [2] => Array
        (
            [mean] => 61143.413450883
            [minima] => 5654
            [maxima] => 65535
            [standardDeviation] => 10656.363052485
            [depth] => 8
        )

    [4] => Array
        (
            [mean] => 57923.358076397
            [minima] => 1799
            [maxima] => 65535
            [standardDeviation] => 17257.063161026
            [depth] => 8
        )

    [8] => Array
        (
            [mean] => 0
            [minima] => 0
            [maxima] => 0
            [standardDeviation] => 0
            [depth] => 1
        )

    [32] => Array
        (
            [mean] => 0
            [minima] => 1.7976931348623E+308
            [maxima] => -1.7976931348623E+308
            [standardDeviation] => 0
            [depth] => 1
        )

)

Program 2:

<?php

// Create new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/20190918234528/colorize1.png');

// Get the statistics
$statistics = $imagick->getImageChannelStatistics();
print("<pre>".print_r($statistics, true)."</pre>");
?>

Output:

Array
(
    [0] => Array
        (
            [mean] => 0
            [minima] => 1.7976931348623E+308
            [maxima] => -1.7976931348623E+308
            [standardDeviation] => 0
            [depth] => 1
        )

    [1] => Array
        (
            [mean] => 56510.812968516
            [minima] => 0
            [maxima] => 65535
            [standardDeviation] => 20404.259764873
            [depth] => 8
        )

    [2] => Array
        (
            [mean] => 61143.413450883
            [minima] => 5654
            [maxima] => 65535
            [standardDeviation] => 10656.363052485
            [depth] => 8
        )

    [4] => Array
        (
            [mean] => 65535
            [minima] => 65535
            [maxima] => 65535
            [standardDeviation] => 0
            [depth] => 1
        )

    [8] => Array
        (
            [mean] => 0
            [minima] => 0
            [maxima] => 0
            [standardDeviation] => 0
            [depth] => 1
        )

    [32] => Array
        (
            [mean] => 0
            [minima] => 1.7976931348623E+308
            [maxima] => -1.7976931348623E+308
            [standardDeviation] => 0
            [depth] => 1
        )

)

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