La función Imagick::getImageChannelStatistics() es una función incorporada en PHP que se usa para obtener las estadísticas de cada canal en la imagen.
Sintaxis:
array Imagick::getImageChannelStatistics( void )
Parámetros: Esta función no acepta ningún parámetro.
Excepciones: esta función lanza ImagickException en caso de error.
Valor devuelto: esta función devuelve una array con datos estadísticos como miembros de la array.
Los siguientes programas ilustran la función Imagick::getImageChannelStatistics() en PHP:
Programa 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>");
?>
Producción:
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
)
)
Programa 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>");
?>
Producción:
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
)
)
Referencia: https://www.php.net/manual/en/imagick.getimagechannelstatistics.php